diff --git a/Makefile b/Makefile
index b0192a5f8a..73fbd1c062 100644
--- a/Makefile
+++ b/Makefile
@@ -177,7 +177,7 @@ format-symbols:
 	./tools/symbols.py remove-orphans config/splat.hd.tt_000.yaml
 	./tools/symbols.py remove-orphans config/splat.us.stmad.yaml
 format-license:
-	find src/ | grep -E '\.c$$|\.h$$' | python3 ./tools/lint-license.py - AGPL-3.0-only
+	find src/ | grep -E '\.c$$|\.h$$' | grep -vE 'PsyCross|mednafen|psxsdk|3rd' | python3 ./tools/lint-license.py - AGPL-3.0-only
 	python3 ./tools/lint-license.py include/game.h AGPL-3.0-only
 	python3 ./tools/lint-license.py include/entity.h AGPL-3.0-only
 	python3 ./tools/lint-license.py include/items.h AGPL-3.0-only
diff --git a/include/entity.h b/include/entity.h
index 212b6390e2..0c4b78873d 100644
--- a/include/entity.h
+++ b/include/entity.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 /**
  * Custom Entity Subtypes
  */
diff --git a/include/game.h b/include/game.h
index 0c5e3efb45..0ce21e7833 100644
--- a/include/game.h
+++ b/include/game.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #ifndef GAME_H
 #define GAME_H
 #include "common.h"
diff --git a/include/items.h b/include/items.h
index 5b99327c05..320f6a541a 100644
--- a/include/items.h
+++ b/include/items.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 typedef enum ItemSlots {
     LEFT_HAND_SLOT,
     RIGHT_HAND_SLOT,
diff --git a/include/lba.h b/include/lba.h
index 141a7ad67f..1cf41e434a 100644
--- a/include/lba.h
+++ b/include/lba.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 
 #define OFF_WARNING_TIM 24545
 #define LEN_WARNING_TIM 327700
diff --git a/include/memcard.h b/include/memcard.h
index c75ee62a40..acc9d9a686 100644
--- a/include/memcard.h
+++ b/include/memcard.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #ifndef MEMCARD_H
 #define MEMCARD_H
 
diff --git a/src/config_us.h b/src/config_us.h
index 0a59308a6d..88c84bf37b 100644
--- a/src/config_us.h
+++ b/src/config_us.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "game.h"
 
 // clang-format off
diff --git a/src/destroy_entities_from_index.h b/src/destroy_entities_from_index.h
index 9b73fc8e9f..29eeafd85b 100644
--- a/src/destroy_entities_from_index.h
+++ b/src/destroy_entities_from_index.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #ifndef HARD_LINK
 void DestroyEntitiesFromIndex(s16 index) {
     Entity* entity = &g_Entities[index];
diff --git a/src/destroy_entity.h b/src/destroy_entity.h
index 3f4aa0817d..2645dad032 100644
--- a/src/destroy_entity.h
+++ b/src/destroy_entity.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #ifndef HARD_LINK
 void DestroyEntity(Entity* entity) {
     s32 i;
diff --git a/src/dra/42398.c b/src/dra/42398.c
index 4e58ec1344..a4fbabd3d4 100644
--- a/src/dra/42398.c
+++ b/src/dra/42398.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dra.h"
 #include "dra_bss.h"
 #include "lba.h"
diff --git a/src/dra/47BB8.c b/src/dra/47BB8.c
index 80d41d749b..2726064503 100644
--- a/src/dra/47BB8.c
+++ b/src/dra/47BB8.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dra.h"
 #include "lba.h"
 
diff --git a/src/dra/4A538.c b/src/dra/4A538.c
index e9633684df..beef485677 100644
--- a/src/dra/4A538.c
+++ b/src/dra/4A538.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dra.h"
 #include "dra_bss.h"
 
diff --git a/src/dra/5087C.c b/src/dra/5087C.c
index e9b8a77672..13f2e32d17 100644
--- a/src/dra/5087C.c
+++ b/src/dra/5087C.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dra.h"
 #include "dra_bss.h"
 #include "menu.h"
diff --git a/src/dra/5D5BC.c b/src/dra/5D5BC.c
index bab865ce84..9df1444949 100644
--- a/src/dra/5D5BC.c
+++ b/src/dra/5D5BC.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dra.h"
 #include "dra_bss.h"
 #include "objects.h"
diff --git a/src/dra/627C4.c b/src/dra/627C4.c
index 7e8462671f..4bc93cc558 100644
--- a/src/dra/627C4.c
+++ b/src/dra/627C4.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dra.h"
 #include "dra_bss.h"
 #include "objects.h"
diff --git a/src/dra/63ED4.c b/src/dra/63ED4.c
index 967e64e557..f65db67c91 100644
--- a/src/dra/63ED4.c
+++ b/src/dra/63ED4.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dra.h"
 #include "dra_bss.h"
 #include "objects.h"
diff --git a/src/dra/692E8.c b/src/dra/692E8.c
index 0a08ce60b3..9be34851b7 100644
--- a/src/dra/692E8.c
+++ b/src/dra/692E8.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dra.h"
 #include "dra_bss.h"
 #include "sfx.h"
diff --git a/src/dra/6D59C.c b/src/dra/6D59C.c
index a93e40d2ea..2037475f74 100644
--- a/src/dra/6D59C.c
+++ b/src/dra/6D59C.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dra.h"
 #include "dra_bss.h"
 #include "sfx.h"
diff --git a/src/dra/704D0.c b/src/dra/704D0.c
index 98e5987e7a..3a71d9b3a6 100644
--- a/src/dra/704D0.c
+++ b/src/dra/704D0.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dra.h"
 #include "dra_bss.h"
 #include "sfx.h"
diff --git a/src/dra/71830.c b/src/dra/71830.c
index 1f9b042597..afa57431f4 100644
--- a/src/dra/71830.c
+++ b/src/dra/71830.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dra.h"
 #include "dra_bss.h"
 #include "objects.h"
diff --git a/src/dra/72BB0.c b/src/dra/72BB0.c
index 78404ff06d..a14a15d64b 100644
--- a/src/dra/72BB0.c
+++ b/src/dra/72BB0.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dra.h"
 #include "dra_bss.h"
 #include "sfx.h"
diff --git a/src/dra/75F54.c b/src/dra/75F54.c
index 73e24658ad..b894f3d311 100644
--- a/src/dra/75F54.c
+++ b/src/dra/75F54.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dra.h"
 #include "dra_bss.h"
 #include "objects.h"
diff --git a/src/dra/78D0C.c b/src/dra/78D0C.c
index 84d346d294..14a1e71987 100644
--- a/src/dra/78D0C.c
+++ b/src/dra/78D0C.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dra.h"
 #include "objects.h"
 #include "sfx.h"
diff --git a/src/dra/7A4D0.c b/src/dra/7A4D0.c
index 3677d633f6..db7de25d21 100644
--- a/src/dra/7A4D0.c
+++ b/src/dra/7A4D0.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dra.h"
 #include "dra_bss.h"
 #include "objects.h"
diff --git a/src/dra/7E4BC.c b/src/dra/7E4BC.c
index 01dc075538..549c005c7d 100644
--- a/src/dra/7E4BC.c
+++ b/src/dra/7E4BC.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dra.h"
 #include "dra_bss.h"
 #include "objects.h"
diff --git a/src/dra/843B0.c b/src/dra/843B0.c
index 519019b861..e99f83eb4f 100644
--- a/src/dra/843B0.c
+++ b/src/dra/843B0.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dra.h"
 #include "objects.h"
 #include "sfx.h"
diff --git a/src/dra/8A0A4.c b/src/dra/8A0A4.c
index 720d253ad5..f5294535a1 100644
--- a/src/dra/8A0A4.c
+++ b/src/dra/8A0A4.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dra.h"
 #include "dra_bss.h"
 #include "sfx.h"
diff --git a/src/dra/8D3E8.c b/src/dra/8D3E8.c
index 7646e38303..dcf34ccb8c 100644
--- a/src/dra/8D3E8.c
+++ b/src/dra/8D3E8.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dra.h"
 #include "dra_bss.h"
 #include "objects.h"
diff --git a/src/dra/91EBC.c b/src/dra/91EBC.c
index e48d2eb413..d8a5d542b0 100644
--- a/src/dra/91EBC.c
+++ b/src/dra/91EBC.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dra.h"
 #include "dra_bss.h"
 #include "objects.h"
diff --git a/src/dra/92F60.c b/src/dra/92F60.c
index b894193162..931cd03275 100644
--- a/src/dra/92F60.c
+++ b/src/dra/92F60.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dra.h"
 #include "dra_bss.h"
 #include "objects.h"
diff --git a/src/dra/93290.c b/src/dra/93290.c
index ed6557a937..71354d69d5 100644
--- a/src/dra/93290.c
+++ b/src/dra/93290.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dra.h"
 #include "dra_bss.h"
 #include "objects.h"
diff --git a/src/dra/93BDC.c b/src/dra/93BDC.c
index 7aefc94db7..677bf7f5c6 100644
--- a/src/dra/93BDC.c
+++ b/src/dra/93BDC.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dra.h"
 #include "dra_bss.h"
 #include "objects.h"
diff --git a/src/dra/94F50.c b/src/dra/94F50.c
index ea0b4d007f..dd0f09e3ab 100644
--- a/src/dra/94F50.c
+++ b/src/dra/94F50.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dra.h"
 #include "dra_bss.h"
 #include "objects.h"
diff --git a/src/dra/953A0.c b/src/dra/953A0.c
index 4bb10c40d0..5ddc74455d 100644
--- a/src/dra/953A0.c
+++ b/src/dra/953A0.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dra.h"
 #include "dra_bss.h"
 #include "objects.h"
diff --git a/src/dra/bss.c b/src/dra/bss.c
index e7d613c16d..5ef087d722 100644
--- a/src/dra/bss.c
+++ b/src/dra/bss.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <game.h>
 #include <psxsdk/libsnd.h>
 #include "disk.h"
diff --git a/src/dra/cd.c b/src/dra/cd.c
index ea75274159..594446e482 100644
--- a/src/dra/cd.c
+++ b/src/dra/cd.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dra.h"
 #include "dra_bss.h"
 #include "lba.h"
diff --git a/src/dra/collider.c b/src/dra/collider.c
index 0c89f12895..4d0afcb3eb 100644
--- a/src/dra/collider.c
+++ b/src/dra/collider.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dra.h"
 
 typedef enum {
diff --git a/src/dra/config_jp.c b/src/dra/config_jp.c
index 99afe771c7..511e33c87f 100644
--- a/src/dra/config_jp.c
+++ b/src/dra/config_jp.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "game.h"
 
 // !!! IMPORTANT !!!
diff --git a/src/dra/config_us.c b/src/dra/config_us.c
index cb8f44ca23..70ab319174 100644
--- a/src/dra/config_us.c
+++ b/src/dra/config_us.c
@@ -1 +1,2 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../config_us.h"
diff --git a/src/dra/d_10798.c b/src/dra/d_10798.c
index 315d17ad54..975089298e 100644
--- a/src/dra/d_10798.c
+++ b/src/dra/d_10798.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dra.h"
 
 AnimationFrame D_800B0798[] = {
diff --git a/src/dra/d_24CEC.c b/src/dra/d_24CEC.c
index a21d257b44..c894a82c65 100644
--- a/src/dra/d_24CEC.c
+++ b/src/dra/d_24CEC.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <game.h>
 
 u8 D_800C4CEC[] = {
diff --git a/src/dra/d_2F324.c b/src/dra/d_2F324.c
index a67b1588bd..941a8fe3fe 100644
--- a/src/dra/d_2F324.c
+++ b/src/dra/d_2F324.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <game.h>
 
 typedef struct {
diff --git a/src/dra/d_3B0D4.c b/src/dra/d_3B0D4.c
index 4db28c4cee..fa4a9048dc 100644
--- a/src/dra/d_3B0D4.c
+++ b/src/dra/d_3B0D4.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dra.h"
 
 u16 D_800DB0D4[] = {
diff --git a/src/dra/d_C910.c b/src/dra/d_C910.c
index b59409cb8d..3cf9a154d1 100644
--- a/src/dra/d_C910.c
+++ b/src/dra/d_C910.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dra.h"
 
 #if defined(VERSION_US)
diff --git a/src/dra/d_CD80.c b/src/dra/d_CD80.c
index 66e79029bb..f43d565023 100644
--- a/src/dra/d_CD80.c
+++ b/src/dra/d_CD80.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dra.h"
 
 Vram g_Vram = {
diff --git a/src/dra/d_CF74.c b/src/dra/d_CF74.c
index 330a0e9250..ebdee27392 100644
--- a/src/dra/d_CF74.c
+++ b/src/dra/d_CF74.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dra.h"
 #include "sfx.h"
 
diff --git a/src/dra/d_DBD4.c b/src/dra/d_DBD4.c
index 8de131963d..60763d538f 100644
--- a/src/dra/d_DBD4.c
+++ b/src/dra/d_DBD4.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dra.h"
 
 AnimationFrame D_800ADBD4[] = {
diff --git a/src/dra/d_E294.c b/src/dra/d_E294.c
index b2bbebdb49..c22f89b4a0 100644
--- a/src/dra/d_E294.c
+++ b/src/dra/d_E294.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dra.h"
 
 AnimationFrame D_800AE294[] = {
diff --git a/src/dra/demo.c b/src/dra/demo.c
index d0ada88856..3ace685bd2 100644
--- a/src/dra/demo.c
+++ b/src/dra/demo.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dra.h"
 
 extern u8 D_800A243C[32] = {
diff --git a/src/dra/dra.h b/src/dra/dra.h
index c398f17dd3..3d72746763 100644
--- a/src/dra/dra.h
+++ b/src/dra/dra.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #ifndef DRA_H
 #define DRA_H
 
diff --git a/src/dra/dra_bss.h b/src/dra/dra_bss.h
index 7f8fa920f4..6506afeb0c 100644
--- a/src/dra/dra_bss.h
+++ b/src/dra/dra_bss.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dra.h"
 
 // BSS shared
diff --git a/src/dra/dra_header.c b/src/dra/dra_header.c
index 97cb9f8712..638fb22887 100644
--- a/src/dra/dra_header.c
+++ b/src/dra/dra_header.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <game.h>
 
 typedef void (*Entrypoint)(void);
diff --git a/src/dra/lang_us.c b/src/dra/lang_us.c
index 7bb61ba5e5..d53dc5ac1b 100644
--- a/src/dra/lang_us.c
+++ b/src/dra/lang_us.c
@@ -1 +1,2 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "game.h"
diff --git a/src/dra/lba_stage.c b/src/dra/lba_stage.c
index c41b49bee3..4f7652ab15 100644
--- a/src/dra/lba_stage.c
+++ b/src/dra/lba_stage.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "game.h"
 
 // clang-format off
diff --git a/src/dra/loading.c b/src/dra/loading.c
index 72803c916e..277c0794d6 100644
--- a/src/dra/loading.c
+++ b/src/dra/loading.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dra.h"
 #include "dra_bss.h"
 #include "sfx.h"
diff --git a/src/dra/menu.c b/src/dra/menu.c
index 916d28978d..3d509765ec 100644
--- a/src/dra/menu.c
+++ b/src/dra/menu.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dra.h"
 #include "dra_bss.h"
 #include "menu.h"
diff --git a/src/dra/menu.h b/src/dra/menu.h
index e5aedf6864..795d890e67 100644
--- a/src/dra/menu.h
+++ b/src/dra/menu.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #ifndef MENU_H
 #define MENU_H
 
diff --git a/src/dra/pads.c b/src/dra/pads.c
index 4f84c81e9c..6b25a9bef4 100644
--- a/src/dra/pads.c
+++ b/src/dra/pads.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dra.h"
 
 // BSS
diff --git a/src/dra/play.c b/src/dra/play.c
index af324ce489..1fc3879657 100644
--- a/src/dra/play.c
+++ b/src/dra/play.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dra.h"
 #include "dra_bss.h"
 #include "sfx.h"
diff --git a/src/dra/save_mgr.c b/src/dra/save_mgr.c
index 518a2affca..8035406592 100644
--- a/src/dra/save_mgr.c
+++ b/src/dra/save_mgr.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dra.h"
 #include "dra_bss.h"
 #include "../save_mgr.h"
diff --git a/src/dra/save_mgr_pre.c b/src/dra/save_mgr_pre.c
index 7eed17de85..fb7cf58916 100644
--- a/src/dra/save_mgr_pre.c
+++ b/src/dra/save_mgr_pre.c
@@ -1,2 +1,3 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dra.h"
 #include "../save_mgr_pre.h"
diff --git a/src/main/main.c b/src/main/main.c
index 4681d0e1c0..48151cbf33 100644
--- a/src/main/main.c
+++ b/src/main/main.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "common.h"
 #include "game.h"
 
diff --git a/src/main/psxsdk/libsnd/sstick.c b/src/main/psxsdk/libsnd/sstick.c
index 2d36bbe68d..21aff8a5b9 100644
--- a/src/main/psxsdk/libsnd/sstick.c
+++ b/src/main/psxsdk/libsnd/sstick.c
@@ -1,4 +1,3 @@
-
 #include "libsnd_i.h"
 
 void SsSetTickMode(long tick_mode) {
diff --git a/src/pc/io.c b/src/pc/io.c
index b56a4562be..1fc2ff9ac6 100644
--- a/src/pc/io.c
+++ b/src/pc/io.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <stdio.h>
 #include <stdlib.h>
 #include "pc.h"
diff --git a/src/pc/log.c b/src/pc/log.c
index 00bc3cff54..411b2e5082 100644
--- a/src/pc/log.c
+++ b/src/pc/log.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <log.h>
 #include <stdarg.h>
 #include <stdio.h>
diff --git a/src/pc/null.c b/src/pc/null.c
index 63cbe2b555..f9e09616d0 100644
--- a/src/pc/null.c
+++ b/src/pc/null.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // something is off with the headers in this target
 #include "../../include/common.h"
 #include "../../include/psxsdk/libgpu.h"
diff --git a/src/pc/pc.c b/src/pc/pc.c
index 46831333d5..e82d5758aa 100644
--- a/src/pc/pc.c
+++ b/src/pc/pc.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <common.h>
 #include <stdarg.h>
 #include <stdio.h>
diff --git a/src/pc/pc.h b/src/pc/pc.h
index e3d38e52f7..050b747ea4 100644
--- a/src/pc/pc.h
+++ b/src/pc/pc.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #ifndef PC_H
 #define PC_H
 
diff --git a/src/pc/pl_arc.c b/src/pc/pl_arc.c
index 23e1e08922..b48eaefc86 100644
--- a/src/pc/pl_arc.c
+++ b/src/pc/pl_arc.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <game.h>
 #include <log.h>
 #include "pc.h"
diff --git a/src/pc/pl_ric.c b/src/pc/pl_ric.c
index 9b3b62584b..ad61e0b793 100644
--- a/src/pc/pl_ric.c
+++ b/src/pc/pl_ric.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <game.h>
 
 extern PlayerOvl RIC_player;
diff --git a/src/pc/plat_unix.c b/src/pc/plat_unix.c
index ef8c763cf2..81550424b0 100644
--- a/src/pc/plat_unix.c
+++ b/src/pc/plat_unix.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <common.h>
 #include <log.h>
 #include <stdio.h>
diff --git a/src/pc/plat_win.c b/src/pc/plat_win.c
index f95e221148..1af5605cd4 100644
--- a/src/pc/plat_win.c
+++ b/src/pc/plat_win.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <common.h>
 #include <log.h>
 #include <string.h>
diff --git a/src/pc/psxsdk/cdc.h b/src/pc/psxsdk/cdc.h
index 74fc68a1c0..e9207b33e3 100644
--- a/src/pc/psxsdk/cdc.h
+++ b/src/pc/psxsdk/cdc.h
@@ -1,5 +1,3 @@
-
-
 #ifndef CDC_H
 #define CDC_H
 #include <inttypes.h>
diff --git a/src/pc/render_gl.c b/src/pc/render_gl.c
index 5c2ee8bc3a..0fd5b27858 100644
--- a/src/pc/render_gl.c
+++ b/src/pc/render_gl.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <common.h>
 #include <log.h>
 #include <game.h>
diff --git a/src/pc/render_shared.c b/src/pc/render_shared.c
index 0738f3a23d..a59ae16e67 100644
--- a/src/pc/render_shared.c
+++ b/src/pc/render_shared.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <common.h>
 #include <log.h>
 #include <game.h>
diff --git a/src/pc/render_soft.c b/src/pc/render_soft.c
index 0c7c41edb1..7f714bdba9 100644
--- a/src/pc/render_soft.c
+++ b/src/pc/render_soft.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <common.h>
 #include <log.h>
 #include <game.h>
diff --git a/src/pc/sdl2.c b/src/pc/sdl2.c
index c7438e8769..0cd73c8dae 100644
--- a/src/pc/sdl2.c
+++ b/src/pc/sdl2.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <common.h>
 #include <log.h>
 #include <game.h>
diff --git a/src/pc/sdl2_macros.c b/src/pc/sdl2_macros.c
index 05e204225e..639dc4c8ad 100644
--- a/src/pc/sdl2_macros.c
+++ b/src/pc/sdl2_macros.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <game.h>
 #ifdef _MSC_VER
 #define SDL_MAIN_HANDLED
diff --git a/src/pc/sdl2_macros.h b/src/pc/sdl2_macros.h
index 9b335ce512..f4a3f7c43b 100644
--- a/src/pc/sdl2_macros.h
+++ b/src/pc/sdl2_macros.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #ifndef MACRO_H
 #define MACRO_H
 #include "game.h"
diff --git a/src/pc/sdl_defs.h b/src/pc/sdl_defs.h
index 5dd288ceb7..0aa3810892 100644
--- a/src/pc/sdl_defs.h
+++ b/src/pc/sdl_defs.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #ifndef SDL_DEFS_H
 #define SDL_DEFS_H
 typedef enum {
diff --git a/src/pc/sim_pc.c b/src/pc/sim_pc.c
index 9c1785aa6b..4f7e03aa31 100644
--- a/src/pc/sim_pc.c
+++ b/src/pc/sim_pc.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <dra.h>
 #include "dra_bss.h"
 #include <log.h>
diff --git a/src/pc/sotn.c b/src/pc/sotn.c
index fed92399db..1cfa27e892 100644
--- a/src/pc/sotn.c
+++ b/src/pc/sotn.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "pc.h"
 #include "dra.h"
 #include "dra_bss.h"
diff --git a/src/pc/stages/stage_dummy.c b/src/pc/stages/stage_dummy.c
index a196533e44..d4de024604 100644
--- a/src/pc/stages/stage_dummy.c
+++ b/src/pc/stages/stage_dummy.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <game.h>
 #include <stdio.h>
 #include <stdlib.h>
diff --git a/src/pc/stages/stage_loader.c b/src/pc/stages/stage_loader.c
index b168915b38..cef77bf19f 100644
--- a/src/pc/stages/stage_loader.c
+++ b/src/pc/stages/stage_loader.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <game.h>
 #include <stdlib.h>
 #include <string.h>
diff --git a/src/pc/stages/stage_loader.h b/src/pc/stages/stage_loader.h
index 309edb05ab..9b5dd0ccf2 100644
--- a/src/pc/stages/stage_loader.h
+++ b/src/pc/stages/stage_loader.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #ifndef STAGE_LOADER_H
 #define STAGE_LOADER_H
 
diff --git a/src/pc/stages/stage_sel.c b/src/pc/stages/stage_sel.c
index 45fae1b957..6ece1b87a5 100644
--- a/src/pc/stages/stage_sel.c
+++ b/src/pc/stages/stage_sel.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <game.h>
 #include "../../st/sel/sel.h"
 #include "../pc.h"
diff --git a/src/pc/stages/stage_wrp.c b/src/pc/stages/stage_wrp.c
index 7740fe2f5a..fe83199315 100644
--- a/src/pc/stages/stage_wrp.c
+++ b/src/pc/stages/stage_wrp.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <game.h>
 #include <stdio.h>
 #include <stdlib.h>
diff --git a/src/pc/str.c b/src/pc/str.c
index 515bc18cf2..956803f37d 100644
--- a/src/pc/str.c
+++ b/src/pc/str.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "pc.h"
 #include <stdlib.h>
 #include <string.h>
diff --git a/src/pc/stubs.c b/src/pc/stubs.c
index 3e1e0dcb5a..370ac37a10 100644
--- a/src/pc/stubs.c
+++ b/src/pc/stubs.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "pc.h"
 #include "dra.h"
 #include "memcard.h"
diff --git a/src/pc/weapon_pc.c b/src/pc/weapon_pc.c
index d05ce5aa6f..502caf009b 100644
--- a/src/pc/weapon_pc.c
+++ b/src/pc/weapon_pc.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "weapon.h"
 #include "pc.h"
 #include <string.h>
diff --git a/src/pc/weapon_pc.h b/src/pc/weapon_pc.h
index a53cc11f47..19096feac8 100644
--- a/src/pc/weapon_pc.h
+++ b/src/pc/weapon_pc.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #ifndef WEAPON_PC_H
 #define WEAPON_PC_H
 
diff --git a/src/ric/1AC60.c b/src/ric/1AC60.c
index 19406f0a71..ffc2c01bbc 100644
--- a/src/ric/1AC60.c
+++ b/src/ric/1AC60.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 /*
  * File: 1AC60.c
  * Overlay: RIC
diff --git a/src/ric/1CB04.c b/src/ric/1CB04.c
index 259e19343e..0583ca96f6 100644
--- a/src/ric/1CB04.c
+++ b/src/ric/1CB04.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "ric.h"
 #include "player.h"
 #include "sfx.h"
diff --git a/src/ric/1FCD0.c b/src/ric/1FCD0.c
index f5f5e9a9c6..c2c69b734b 100644
--- a/src/ric/1FCD0.c
+++ b/src/ric/1FCD0.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "ric.h"
 #include "sfx.h"
 
diff --git a/src/ric/202A8.c b/src/ric/202A8.c
index 28166e1bde..a109bba3a4 100644
--- a/src/ric/202A8.c
+++ b/src/ric/202A8.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 
 #include "ric.h"
 
diff --git a/src/ric/20920.c b/src/ric/20920.c
index 533ec307fa..0fbe75b5d5 100644
--- a/src/ric/20920.c
+++ b/src/ric/20920.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "ric.h"
 
 void RicSetAnimation(AnimationFrame* anim) {
diff --git a/src/ric/21250.c b/src/ric/21250.c
index cc9abe27fe..1fe9bd4bcf 100644
--- a/src/ric/21250.c
+++ b/src/ric/21250.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "ric.h"
 #include "sfx.h"
 
diff --git a/src/ric/24788.c b/src/ric/24788.c
index 5f85aa4c14..73450d601a 100644
--- a/src/ric/24788.c
+++ b/src/ric/24788.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "ric.h"
 
 Entity* RicGetFreeEntity(s16 start, s16 end);
diff --git a/src/ric/26C84.c b/src/ric/26C84.c
index 9dfca1a00b..a9f8779738 100644
--- a/src/ric/26C84.c
+++ b/src/ric/26C84.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "ric.h"
 
 void func_80162C84(Entity* entity) {
diff --git a/src/ric/2A060.c b/src/ric/2A060.c
index e950cedd70..460bc0dbf1 100644
--- a/src/ric/2A060.c
+++ b/src/ric/2A060.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "ric.h"
 #include "sfx.h"
 
diff --git a/src/ric/2C4C4.c b/src/ric/2C4C4.c
index 6353ca1f3d..72d6f4d90e 100644
--- a/src/ric/2C4C4.c
+++ b/src/ric/2C4C4.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "ric.h"
 #include "sfx.h"
 
diff --git a/src/ric/319C4.c b/src/ric/319C4.c
index 9e206d1d07..7aa0aca1be 100644
--- a/src/ric/319C4.c
+++ b/src/ric/319C4.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "ric.h"
 #include "sfx.h"
 
diff --git a/src/ric/bss.c b/src/ric/bss.c
index 4ab5db57b9..b9e8c68e1b 100644
--- a/src/ric/bss.c
+++ b/src/ric/bss.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "common.h"
 #include "game.h"
 
diff --git a/src/ric/d_18568.c b/src/ric/d_18568.c
index c5ea1d8f06..4a513aa21d 100644
--- a/src/ric/d_18568.c
+++ b/src/ric/d_18568.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "ric.h"
 
 s16 D_80154568[4] = {0, -8, -16, 0};
diff --git a/src/ric/d_188F4.c b/src/ric/d_188F4.c
index 8d5ca405c9..ce186d03aa 100644
--- a/src/ric/d_188F4.c
+++ b/src/ric/d_188F4.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "ric.h"
 
 u8 D_801548F4[6][8] = {
diff --git a/src/ric/d_18C40.c b/src/ric/d_18C40.c
index e997ea0287..e577e1c59a 100644
--- a/src/ric/d_18C40.c
+++ b/src/ric/d_18C40.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "ric.h"
 
 u8 D_80154C40[] = {0x30, 0x3F, 0x20, 0x2F, 0x10, 0x1E, 0x10, 0x3F,
diff --git a/src/ric/d_194B0.c b/src/ric/d_194B0.c
index 5e10530f46..adda35667b 100644
--- a/src/ric/d_194B0.c
+++ b/src/ric/d_194B0.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "ric.h"
 
 AnimationFrame anim_land_strong_impact[] = {
diff --git a/src/ric/d_19C70.c b/src/ric/d_19C70.c
index 536f7e4637..f8eed03a57 100644
--- a/src/ric/d_19C70.c
+++ b/src/ric/d_19C70.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "ric.h"
 
 s16 D_80155C70[] = {0x8139, 0x813A, 0x813B, 0x0000};
diff --git a/src/ric/d_19EE0.c b/src/ric/d_19EE0.c
index 52e99460c5..7e485e1119 100644
--- a/src/ric/d_19EE0.c
+++ b/src/ric/d_19EE0.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "ric.h"
 
 s32 D_80155EE0[] = {0x00000F80, 0x00000100, 0x00000700, 0x00000880};
diff --git a/src/ric/pl_header.c b/src/ric/pl_header.c
index b5f15dab0d..8bd98e84e1 100644
--- a/src/ric/pl_header.c
+++ b/src/ric/pl_header.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "ric.h"
 
 void RicMain(void);
diff --git a/src/ric/ric.h b/src/ric/ric.h
index e3d41d0c63..c9362a2030 100644
--- a/src/ric/ric.h
+++ b/src/ric/ric.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <game.h>
 #include <sfx.h>
 
diff --git a/src/ric/spriteparts.c b/src/ric/spriteparts.c
index cf68122b1a..2624ef4406 100644
--- a/src/ric/spriteparts.c
+++ b/src/ric/spriteparts.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "ric.h"
 
 s16 D_80153400[];
diff --git a/src/saturn/alucard.c b/src/saturn/alucard.c
index 9be0ab2591..52c3039b7e 100644
--- a/src/saturn/alucard.c
+++ b/src/saturn/alucard.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "inc_asm.h"
 #include "sattypes.h"
 
diff --git a/src/saturn/game.c b/src/saturn/game.c
index 58796a9e93..8a9ead6571 100644
--- a/src/saturn/game.c
+++ b/src/saturn/game.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "inc_asm.h"
 #include "sattypes.h"
 #include "game.h"
diff --git a/src/saturn/game.h b/src/saturn/game.h
index bc594141b9..e40cd47632 100644
--- a/src/saturn/game.h
+++ b/src/saturn/game.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #ifndef GAME_H
 #define GAME_H
 
diff --git a/src/saturn/inc_asm.h b/src/saturn/inc_asm.h
index fb121a71b3..914b3f6f53 100644
--- a/src/saturn/inc_asm.h
+++ b/src/saturn/inc_asm.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #ifndef INCLUDE_ASM_H
 #define INCLUDE_ASM_H
 
diff --git a/src/saturn/lib/bup.c b/src/saturn/lib/bup.c
index ed0c17bc19..93376ff92f 100644
--- a/src/saturn/lib/bup.c
+++ b/src/saturn/lib/bup.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "sattypes.h"
 #include "inc_asm.h"
 
diff --git a/src/saturn/lib/cdc.c b/src/saturn/lib/cdc.c
index 0413415cd0..bea170533d 100644
--- a/src/saturn/lib/cdc.c
+++ b/src/saturn/lib/cdc.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "sattypes.h"
 #include "inc_asm.h"
 
diff --git a/src/saturn/lib/csh.c b/src/saturn/lib/csh.c
index 4f28d8b250..636103d527 100644
--- a/src/saturn/lib/csh.c
+++ b/src/saturn/lib/csh.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "sattypes.h"
 #include "inc_asm.h"
 
diff --git a/src/saturn/lib/csh.h b/src/saturn/lib/csh.h
index 3a8f271630..d43b7e2570 100644
--- a/src/saturn/lib/csh.h
+++ b/src/saturn/lib/csh.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #ifndef CSH_H
 #define CSH_H
 
diff --git a/src/saturn/lib/def.h b/src/saturn/lib/def.h
index 95918b2cad..4de3bfdd2c 100644
--- a/src/saturn/lib/def.h
+++ b/src/saturn/lib/def.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 
 #ifndef DEF_H
 #define DEF_H
diff --git a/src/saturn/lib/dma.c b/src/saturn/lib/dma.c
index 03b08195f3..7165f133c2 100644
--- a/src/saturn/lib/dma.c
+++ b/src/saturn/lib/dma.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "sattypes.h"
 #include "inc_asm.h"
 
diff --git a/src/saturn/lib/gfs.c b/src/saturn/lib/gfs.c
index 71436f77cf..c1373123f4 100644
--- a/src/saturn/lib/gfs.c
+++ b/src/saturn/lib/gfs.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "sattypes.h"
 #include "inc_asm.h"
 
diff --git a/src/saturn/lib/mth.c b/src/saturn/lib/mth.c
index 7ccb105159..e2e7800edf 100644
--- a/src/saturn/lib/mth.c
+++ b/src/saturn/lib/mth.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "sattypes.h"
 #include "inc_asm.h"
 
diff --git a/src/saturn/lib/mth.h b/src/saturn/lib/mth.h
index 4c847e1152..e498129b14 100644
--- a/src/saturn/lib/mth.h
+++ b/src/saturn/lib/mth.h
@@ -1,5 +1,4 @@
-
-
+// SPDX-License-Identifier: AGPL-3.0-only
 #ifndef MTH_H
 #define MTH_H
 
diff --git a/src/saturn/lib/per.c b/src/saturn/lib/per.c
index 3f6bd7d279..84fdbe08fe 100644
--- a/src/saturn/lib/per.c
+++ b/src/saturn/lib/per.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "sattypes.h"
 #include "inc_asm.h"
 
diff --git a/src/saturn/lib/scl.c b/src/saturn/lib/scl.c
index ee95ada718..03371616c9 100644
--- a/src/saturn/lib/scl.c
+++ b/src/saturn/lib/scl.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "sattypes.h"
 #include "inc_asm.h"
 #include "xpt.h"
diff --git a/src/saturn/lib/scl.h b/src/saturn/lib/scl.h
index 00f9938dc2..67a2524753 100644
--- a/src/saturn/lib/scl.h
+++ b/src/saturn/lib/scl.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 
 #ifndef SCR_H
 #define SCR_H
diff --git a/src/saturn/lib/spr.c b/src/saturn/lib/spr.c
index 9d801953d6..0d6cadb8c7 100644
--- a/src/saturn/lib/spr.c
+++ b/src/saturn/lib/spr.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "sattypes.h"
 #include "inc_asm.h"
 
diff --git a/src/saturn/lib/spr.h b/src/saturn/lib/spr.h
index 1fe1c061b7..c210d86da6 100644
--- a/src/saturn/lib/spr.h
+++ b/src/saturn/lib/spr.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #ifndef SPR_H
 #define SPR_H
 
diff --git a/src/saturn/lib/sys.c b/src/saturn/lib/sys.c
index 889475debe..b1f0ebcf1c 100644
--- a/src/saturn/lib/sys.c
+++ b/src/saturn/lib/sys.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "sattypes.h"
 #include "inc_asm.h"
 
diff --git a/src/saturn/lib/sys.h b/src/saturn/lib/sys.h
index b325b69097..63a5733932 100644
--- a/src/saturn/lib/sys.h
+++ b/src/saturn/lib/sys.h
@@ -1,5 +1,4 @@
-
-
+// SPDX-License-Identifier: AGPL-3.0-only
 #ifndef SYS_H
 #define SYS_H
 
diff --git a/src/saturn/lib/xpt.h b/src/saturn/lib/xpt.h
index 0fdcd38a19..b83f6891a0 100644
--- a/src/saturn/lib/xpt.h
+++ b/src/saturn/lib/xpt.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #ifndef XPT_H
 #define XPT_H
 typedef unsigned char Uint8;
diff --git a/src/saturn/sattypes.h b/src/saturn/sattypes.h
index baf7d5dab6..783ee5435b 100644
--- a/src/saturn/sattypes.h
+++ b/src/saturn/sattypes.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #ifndef SATURN_TYPES_H
 #define SATURN_TYPES_H
 
diff --git a/src/saturn/stage_02.c b/src/saturn/stage_02.c
index 3c508b8055..724e9acd57 100644
--- a/src/saturn/stage_02.c
+++ b/src/saturn/stage_02.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "stage_02.h"
 #include "inc_asm.h"
 #include "sattypes.h"
diff --git a/src/saturn/stage_02.h b/src/saturn/stage_02.h
index 3dd88ade2c..fa24b0a1ed 100644
--- a/src/saturn/stage_02.h
+++ b/src/saturn/stage_02.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #ifndef STAGE_02_H
 #define STAGE_02_H
 
diff --git a/src/saturn/t_bat.c b/src/saturn/t_bat.c
index c2f018b28e..dd40d69bcb 100644
--- a/src/saturn/t_bat.c
+++ b/src/saturn/t_bat.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "inc_asm.h"
 #include "sattypes.h"
 
diff --git a/src/saturn/warp.c b/src/saturn/warp.c
index aec70c0d36..69f58332d3 100644
--- a/src/saturn/warp.c
+++ b/src/saturn/warp.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "inc_asm.h"
 #include "sattypes.h"
 
diff --git a/src/saturn/zero.c b/src/saturn/zero.c
index e12e30515c..f9ded4c31b 100644
--- a/src/saturn/zero.c
+++ b/src/saturn/zero.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "zero.h"
 #include "inc_asm.h"
 #include "sattypes.h"
diff --git a/src/saturn/zero.h b/src/saturn/zero.h
index 5ca3ebe62d..ac61e8c739 100644
--- a/src/saturn/zero.h
+++ b/src/saturn/zero.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #ifndef ZERO_BIN_H
 #define ZERO_BIN_H
 #include "sattypes.h"
diff --git a/src/save_mgr.h b/src/save_mgr.h
index 7d3838730a..1355be65d1 100644
--- a/src/save_mgr.h
+++ b/src/save_mgr.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "memcard.h"
 
 void SetupEvents(void) {
diff --git a/src/save_mgr_pre.h b/src/save_mgr_pre.h
index 5ef4bfa5ac..e78c9fe936 100644
--- a/src/save_mgr_pre.h
+++ b/src/save_mgr_pre.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "memcard.h"
 
 s32 g_MemcardPortMask[] = {-2, -3};
diff --git a/src/servant/tt_000/10E8.c b/src/servant/tt_000/10E8.c
index 7c53b4c552..d19ffa95ac 100644
--- a/src/servant/tt_000/10E8.c
+++ b/src/servant/tt_000/10E8.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <servant.h>
 #include <sfx.h>
 #include <psxsdk/libc.h>
diff --git a/src/servant/tt_000/448.c b/src/servant/tt_000/448.c
index 04e140c3d3..3e0eb614f4 100644
--- a/src/servant/tt_000/448.c
+++ b/src/servant/tt_000/448.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "common.h"
 
 u16 D_80170448[] = {
diff --git a/src/servant/tt_000/45E4.c b/src/servant/tt_000/45E4.c
index 62f2ee88c2..a9297205b0 100644
--- a/src/servant/tt_000/45E4.c
+++ b/src/servant/tt_000/45E4.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <servant.h>
 #include <sfx.h>
 #include <psxsdk/libc.h>
diff --git a/src/servant/tt_000/4A8.c b/src/servant/tt_000/4A8.c
index 6b3c27b1e0..b91fee75c3 100644
--- a/src/servant/tt_000/4A8.c
+++ b/src/servant/tt_000/4A8.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <game.h>
 
 AnimationFrame D_801704A8[] = {
diff --git a/src/servant/tt_000/608.c b/src/servant/tt_000/608.c
index 1234cbf5d6..01b97c457b 100644
--- a/src/servant/tt_000/608.c
+++ b/src/servant/tt_000/608.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "servant.h"
 
 Sprite D_80170608[] = {
diff --git a/src/servant/tt_000/spriteparts.c b/src/servant/tt_000/spriteparts.c
index b98a9ec412..bd74d26d94 100644
--- a/src/servant/tt_000/spriteparts.c
+++ b/src/servant/tt_000/spriteparts.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "servant.h"
 
 int D_801700C8[];
diff --git a/src/set_prim_rect.h b/src/set_prim_rect.h
index 58c69e0c1d..feb37f2284 100644
--- a/src/set_prim_rect.h
+++ b/src/set_prim_rect.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 void SetPrimRect(Primitive* poly, s32 x, s32 y, s32 width, s32 height) {
     poly->x0 = x;
     poly->y0 = y;
diff --git a/src/st/adjust_value_within_threshold.h b/src/st/adjust_value_within_threshold.h
index c5ec2e2c56..2c320d67a2 100644
--- a/src/st/adjust_value_within_threshold.h
+++ b/src/st/adjust_value_within_threshold.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 u8 AdjustValueWithinThreshold(u8 threshold, u8 currentValue, u8 targetValue) {
     u8 absoluteDifference;
     s8 relativeDifference = targetValue - currentValue;
diff --git a/src/st/alloc_entity.h b/src/st/alloc_entity.h
index 2b5a1817d9..c9449961d1 100644
--- a/src/st/alloc_entity.h
+++ b/src/st/alloc_entity.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 Entity* AllocEntity(Entity* start, Entity* end) {
     Entity* current = start;
 
diff --git a/src/st/animate_entity.h b/src/st/animate_entity.h
index 63654c9ac2..9db21b9f89 100644
--- a/src/st/animate_entity.h
+++ b/src/st/animate_entity.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 u8 AnimateEntity(u8 frames[], Entity* entity) {
     u16 flag;
     u16 currentFrameIndex;
diff --git a/src/st/blink_item.h b/src/st/blink_item.h
index 82ea7a1239..a9cb6c2d36 100644
--- a/src/st/blink_item.h
+++ b/src/st/blink_item.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "game.h"
 
 void BlinkItem(Entity* self, u16 renderFlags) {
diff --git a/src/st/blit_char.h b/src/st/blit_char.h
index 5387bc7a6e..c2ae20d66f 100644
--- a/src/st/blit_char.h
+++ b/src/st/blit_char.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 //
 // Section Sizes:
 //
diff --git a/src/st/cen/14264.c b/src/st/cen/14264.c
index 9e47d5ecc7..a0f5d990cc 100644
--- a/src/st/cen/14264.c
+++ b/src/st/cen/14264.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "cen.h"
 #include "sfx.h"
 
diff --git a/src/st/cen/18084.c b/src/st/cen/18084.c
index 1cc4762120..3c89855723 100644
--- a/src/st/cen/18084.c
+++ b/src/st/cen/18084.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "cen.h"
 
 #include "../check_coll_offsets.h"
diff --git a/src/st/cen/1B274.c b/src/st/cen/1B274.c
index 547edc2ecb..8c4fbbae17 100644
--- a/src/st/cen/1B274.c
+++ b/src/st/cen/1B274.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "cen.h"
 
 #include "../entity_soul_steal_orb.h"
diff --git a/src/st/cen/D4F0.c b/src/st/cen/D4F0.c
index 0daffe6737..ee0ca72337 100644
--- a/src/st/cen/D4F0.c
+++ b/src/st/cen/D4F0.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "types.h"
 
 const u8 D_8018D4F0[8] = {
diff --git a/src/st/cen/D600.c b/src/st/cen/D600.c
index c776d2108e..af183c0b3a 100644
--- a/src/st/cen/D600.c
+++ b/src/st/cen/D600.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 /*
  * File: D600.c
  * Overlay: CEN
diff --git a/src/st/cen/F890.c b/src/st/cen/F890.c
index b7324173ee..de9cb24319 100644
--- a/src/st/cen/F890.c
+++ b/src/st/cen/F890.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "cen.h"
 #include "game.h"
 #include "sfx.h"
diff --git a/src/st/cen/blit_char.c b/src/st/cen/blit_char.c
index dcd77c4c0e..4671969f21 100644
--- a/src/st/cen/blit_char.c
+++ b/src/st/cen/blit_char.c
@@ -1 +1,2 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../blit_char.h"
diff --git a/src/st/cen/cen.h b/src/st/cen/cen.h
index 7537bbce48..77caa124b5 100644
--- a/src/st/cen/cen.h
+++ b/src/st/cen/cen.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #ifndef CEN_H
 #define CEN_H
 
diff --git a/src/st/cen/collision.c b/src/st/cen/collision.c
index 075265617f..765a667bf0 100644
--- a/src/st/cen/collision.c
+++ b/src/st/cen/collision.c
@@ -1 +1,2 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../collision.h"
diff --git a/src/st/cen/create_entity.c b/src/st/cen/create_entity.c
index 02907d3a0e..68a386ba69 100644
--- a/src/st/cen/create_entity.c
+++ b/src/st/cen/create_entity.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <common.h>
 
 #include "../create_entity.h"
diff --git a/src/st/cen/e_collect.c b/src/st/cen/e_collect.c
index f819390dbc..aa502d8c9f 100644
--- a/src/st/cen/e_collect.c
+++ b/src/st/cen/e_collect.c
@@ -1 +1,2 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../e_collect.h"
diff --git a/src/st/cen/e_red_door.c b/src/st/cen/e_red_door.c
index cd9dc7a561..dd52a75451 100644
--- a/src/st/cen/e_red_door.c
+++ b/src/st/cen/e_red_door.c
@@ -1 +1,2 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../e_red_door.h"
diff --git a/src/st/cen/entity.c b/src/st/cen/entity.c
index 69b97ab8df..0edbbc06cc 100644
--- a/src/st/cen/entity.c
+++ b/src/st/cen/entity.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "game.h"
 #include "stage.h"
 
diff --git a/src/st/cen/entity_heart_drop.c b/src/st/cen/entity_heart_drop.c
index a7cd9b112b..7048969292 100644
--- a/src/st/cen/entity_heart_drop.c
+++ b/src/st/cen/entity_heart_drop.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "cen.h"
 // Bizarre variable - u16 here, but u8 in EntityHolyGlassesCutscene
 extern u16 D_801805D8[];
diff --git a/src/st/cen/entity_message_box.c b/src/st/cen/entity_message_box.c
index 0cbd6e3920..e6ec89f0f3 100644
--- a/src/st/cen/entity_message_box.c
+++ b/src/st/cen/entity_message_box.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "cen.h"
 
 #include "../entity_message_box.h"
diff --git a/src/st/cen/entity_relic_orb.c b/src/st/cen/entity_relic_orb.c
index 16064a364a..2522da2cbf 100644
--- a/src/st/cen/entity_relic_orb.c
+++ b/src/st/cen/entity_relic_orb.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "cen.h"
 
 #include "../entity_relic_orb.h"
diff --git a/src/st/cen/header.c b/src/st/cen/header.c
index 9d13937995..ee49149cf9 100644
--- a/src/st/cen/header.c
+++ b/src/st/cen/header.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "cen.h"
 
 extern RoomHeader OVL_EXPORT(rooms)[];
diff --git a/src/st/cen/holyglassescutscene.c b/src/st/cen/holyglassescutscene.c
index d40e115b69..c991375773 100644
--- a/src/st/cen/holyglassescutscene.c
+++ b/src/st/cen/holyglassescutscene.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "cen.h"
 #include "game.h"
 
diff --git a/src/st/cen/prim_helpers.c b/src/st/cen/prim_helpers.c
index 96d47f7df3..bf72d43920 100644
--- a/src/st/cen/prim_helpers.c
+++ b/src/st/cen/prim_helpers.c
@@ -1,2 +1,3 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <game.h>
 #include "../prim_helpers.h"
diff --git a/src/st/cen/random.c b/src/st/cen/random.c
index 04cd68787f..198b5710bb 100644
--- a/src/st/cen/random.c
+++ b/src/st/cen/random.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <game.h>
 
 #include "../random.h"
diff --git a/src/st/cen/tile_data.c b/src/st/cen/tile_data.c
index 18f6aaa4b6..ea1036f108 100644
--- a/src/st/cen/tile_data.c
+++ b/src/st/cen/tile_data.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <stage.h>
 
 #include "tilemap_069EC.h"
diff --git a/src/st/cen/update.c b/src/st/cen/update.c
index 9dbfc83517..8d5c77f84d 100644
--- a/src/st/cen/update.c
+++ b/src/st/cen/update.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <game.h>
 
 // palette
diff --git a/src/st/cen/update_stage_entities.c b/src/st/cen/update_stage_entities.c
index 8886987cb8..283d509feb 100644
--- a/src/st/cen/update_stage_entities.c
+++ b/src/st/cen/update_stage_entities.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <stage.h>
 
 #include "../update_stage_entities.h"
diff --git a/src/st/check_coll_offsets.h b/src/st/check_coll_offsets.h
index a518ba5f25..8d288abef0 100644
--- a/src/st/check_coll_offsets.h
+++ b/src/st/check_coll_offsets.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // arg0 is a pointer to X and Y offsets from the current entity.
 // iterates through those locations, running CheckCollision on
 // each location, returning a set of bit flags indicating which
diff --git a/src/st/check_field_collision.h b/src/st/check_field_collision.h
index 059f99dc7b..19c3b7083a 100644
--- a/src/st/check_field_collision.h
+++ b/src/st/check_field_collision.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 void CheckFieldCollision(s16* hitSensors, s16 sensorCount) {
     Collider collider;
     s32 velocityX;
diff --git a/src/st/clut_lerp.h b/src/st/clut_lerp.h
index 3972564e72..ff857159f6 100644
--- a/src/st/clut_lerp.h
+++ b/src/st/clut_lerp.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 void ClutLerp(RECT* rect, u16 palIdxA, u16 palIdxB, s32 steps, u16 offset) {
     u16 buf[COLORS_PER_PAL];
     RECT bufRect;
diff --git a/src/st/collect_gold.h b/src/st/collect_gold.h
index 82f92e319a..9701a0fd4c 100644
--- a/src/st/collect_gold.h
+++ b/src/st/collect_gold.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 extern u32 c_GoldPrizes[];
 extern const char* g_goldCollectTexts[];
 
diff --git a/src/st/collect_heart.h b/src/st/collect_heart.h
index aca336c811..c288c043fd 100644
--- a/src/st/collect_heart.h
+++ b/src/st/collect_heart.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "sfx.h"
 
 // This function is messy, maybe there's a better way.
diff --git a/src/st/collect_heart_vessel.h b/src/st/collect_heart_vessel.h
index 3adf3c43df..ceba499f95 100644
--- a/src/st/collect_heart_vessel.h
+++ b/src/st/collect_heart_vessel.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "sfx.h"
 
 void CollectHeartVessel(void) {
diff --git a/src/st/collision.h b/src/st/collision.h
index 9fd4d660e0..fb51c95a4c 100644
--- a/src/st/collision.h
+++ b/src/st/collision.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <stage.h>
 #include "sfx.h"
 
diff --git a/src/st/create_entities_horizontal.h b/src/st/create_entities_horizontal.h
index b912b0f8e3..3ccbf4b2b5 100644
--- a/src/st/create_entities_horizontal.h
+++ b/src/st/create_entities_horizontal.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "create_entities_right.h"
 
 /*
diff --git a/src/st/create_entities_right.h b/src/st/create_entities_right.h
index c7d3317da4..e66664f079 100644
--- a/src/st/create_entities_right.h
+++ b/src/st/create_entities_right.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 /*
  * Creates entities between the previous horizontal position and
  * the passed in x position toward the right.
diff --git a/src/st/create_entities_vertical.h b/src/st/create_entities_vertical.h
index 9746d97654..c5b7a53739 100644
--- a/src/st/create_entities_vertical.h
+++ b/src/st/create_entities_vertical.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 /*
  * Creates entities between the previous vertical position and
  * the passed in y position going up.
diff --git a/src/st/create_entity.h b/src/st/create_entity.h
index 1045d04ee0..f140056dd0 100644
--- a/src/st/create_entity.h
+++ b/src/st/create_entity.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 //
 // Section Sizes:
 //
diff --git a/src/st/create_entity_from_entity.h b/src/st/create_entity_from_entity.h
index 4a63d1e8c1..46a026bde4 100644
--- a/src/st/create_entity_from_entity.h
+++ b/src/st/create_entity_from_entity.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 void CreateEntityFromCurrentEntity(u16 entityId, Entity* entity) {
     DestroyEntity(entity);
     entity->entityId = entityId;
diff --git a/src/st/create_entity_from_layout.h b/src/st/create_entity_from_layout.h
index 92d381d813..c2e6721df8 100644
--- a/src/st/create_entity_from_layout.h
+++ b/src/st/create_entity_from_layout.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 void CreateEntityFromLayout(Entity* entity, LayoutEntity* initDesc) {
     Tilemap* tilemap;
 
diff --git a/src/st/create_entity_in_range.h b/src/st/create_entity_in_range.h
index 95701967d0..311c765103 100644
--- a/src/st/create_entity_in_range.h
+++ b/src/st/create_entity_in_range.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 void CreateEntityWhenInVerticalRange(LayoutEntity* obj) {
     s16 yClose;
     s16 yFar;
diff --git a/src/st/dre/11A64.c b/src/st/dre/11A64.c
index 2408bad289..04484d01ea 100644
--- a/src/st/dre/11A64.c
+++ b/src/st/dre/11A64.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 /*
  * File: 11A64.c
  * Overlay: DRE
diff --git a/src/st/dre/13E18.c b/src/st/dre/13E18.c
index a47e7d7d34..6b3bf13b84 100644
--- a/src/st/dre/13E18.c
+++ b/src/st/dre/13E18.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dre.h"
 #include "sfx.h"
 
diff --git a/src/st/dre/161DC.c b/src/st/dre/161DC.c
index 7c9d65a7c3..b00c572f87 100644
--- a/src/st/dre/161DC.c
+++ b/src/st/dre/161DC.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dre.h"
 
 void func_801961DC(s16 arg0) {
diff --git a/src/st/dre/1697C.c b/src/st/dre/1697C.c
index 17c1c1257c..0210a17032 100644
--- a/src/st/dre/1697C.c
+++ b/src/st/dre/1697C.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dre.h"
 #include "sfx.h"
 
diff --git a/src/st/dre/1A3A8.c b/src/st/dre/1A3A8.c
index a75c0a7e65..35c357c358 100644
--- a/src/st/dre/1A3A8.c
+++ b/src/st/dre/1A3A8.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dre.h"
 #include "sfx.h"
 
diff --git a/src/st/dre/1E1C8.c b/src/st/dre/1E1C8.c
index 3dc84ab970..1232763dd2 100644
--- a/src/st/dre/1E1C8.c
+++ b/src/st/dre/1E1C8.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dre.h"
 
 #include "../check_coll_offsets.h"
diff --git a/src/st/dre/22848.c b/src/st/dre/22848.c
index feba9f7bfd..cbb58e5f2f 100644
--- a/src/st/dre/22848.c
+++ b/src/st/dre/22848.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dre.h"
 
 extern SVECTOR* D_80181544[][3];
diff --git a/src/st/dre/blit_char.c b/src/st/dre/blit_char.c
index dcd77c4c0e..4671969f21 100644
--- a/src/st/dre/blit_char.c
+++ b/src/st/dre/blit_char.c
@@ -1 +1,2 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../blit_char.h"
diff --git a/src/st/dre/bss.c b/src/st/dre/bss.c
index 9abaf8dfdd..d16c0d4855 100644
--- a/src/st/dre/bss.c
+++ b/src/st/dre/bss.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <common.h>
 
 STATIC_PAD_BSS(3072);
diff --git a/src/st/dre/collision.c b/src/st/dre/collision.c
index 075265617f..765a667bf0 100644
--- a/src/st/dre/collision.c
+++ b/src/st/dre/collision.c
@@ -1 +1,2 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../collision.h"
diff --git a/src/st/dre/create_entity.c b/src/st/dre/create_entity.c
index 2426cf5db5..49a2076e7d 100644
--- a/src/st/dre/create_entity.c
+++ b/src/st/dre/create_entity.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <types.h>
 
 u32 D_801A3264[24];
diff --git a/src/st/dre/dre.h b/src/st/dre/dre.h
index ebea501d5b..ff84a30a92 100644
--- a/src/st/dre/dre.h
+++ b/src/st/dre/dre.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "stage.h"
 #define STAGE_DRE_H
 
diff --git a/src/st/dre/e_collect.c b/src/st/dre/e_collect.c
index f819390dbc..aa502d8c9f 100644
--- a/src/st/dre/e_collect.c
+++ b/src/st/dre/e_collect.c
@@ -1 +1,2 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../e_collect.h"
diff --git a/src/st/dre/e_red_door.c b/src/st/dre/e_red_door.c
index cd9dc7a561..dd52a75451 100644
--- a/src/st/dre/e_red_door.c
+++ b/src/st/dre/e_red_door.c
@@ -1 +1,2 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../e_red_door.h"
diff --git a/src/st/dre/entity_heart_drop.c b/src/st/dre/entity_heart_drop.c
index 2bb7e69085..01508cd2d7 100644
--- a/src/st/dre/entity_heart_drop.c
+++ b/src/st/dre/entity_heart_drop.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dre.h"
 
 extern u16 D_80180660[];
diff --git a/src/st/dre/entity_message_box.c b/src/st/dre/entity_message_box.c
index 71eb4118a2..501a4718c9 100644
--- a/src/st/dre/entity_message_box.c
+++ b/src/st/dre/entity_message_box.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dre.h"
 
 #include "../entity_message_box.h"
diff --git a/src/st/dre/entity_relic_orb.c b/src/st/dre/entity_relic_orb.c
index 28d0f0b1be..82884ca19d 100644
--- a/src/st/dre/entity_relic_orb.c
+++ b/src/st/dre/entity_relic_orb.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dre.h"
 
 #include "../entity_relic_orb.h"
diff --git a/src/st/dre/header.c b/src/st/dre/header.c
index 54725274f7..83a8994971 100644
--- a/src/st/dre/header.c
+++ b/src/st/dre/header.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dre.h"
 
 extern RoomHeader OVL_EXPORT(rooms)[];
diff --git a/src/st/dre/prim_helpers.c b/src/st/dre/prim_helpers.c
index 96d47f7df3..bf72d43920 100644
--- a/src/st/dre/prim_helpers.c
+++ b/src/st/dre/prim_helpers.c
@@ -1,2 +1,3 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <game.h>
 #include "../prim_helpers.h"
diff --git a/src/st/dre/random.c b/src/st/dre/random.c
index 04cd68787f..198b5710bb 100644
--- a/src/st/dre/random.c
+++ b/src/st/dre/random.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <game.h>
 
 #include "../random.h"
diff --git a/src/st/dre/succubus.c b/src/st/dre/succubus.c
index 490a4da3e4..b7953dace2 100644
--- a/src/st/dre/succubus.c
+++ b/src/st/dre/succubus.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 /*
  * Overlay: DRE
  * Enemy: Succubus Boss
diff --git a/src/st/dre/succubuscutscene.c b/src/st/dre/succubuscutscene.c
index cc0afbccf1..427f68b493 100644
--- a/src/st/dre/succubuscutscene.c
+++ b/src/st/dre/succubuscutscene.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "dre.h"
 
 void func_80194774(void) {
diff --git a/src/st/dre/tile_data.c b/src/st/dre/tile_data.c
index 1408b6c0c2..5953727a75 100644
--- a/src/st/dre/tile_data.c
+++ b/src/st/dre/tile_data.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <stage.h>
 
 #include "tilemap_0B548.h"
diff --git a/src/st/dre/update.c b/src/st/dre/update.c
index e447681b8d..ceeba506b8 100644
--- a/src/st/dre/update.c
+++ b/src/st/dre/update.c
@@ -1 +1,2 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../update.h"
diff --git a/src/st/dre/update_stage_entities.c b/src/st/dre/update_stage_entities.c
index 8886987cb8..283d509feb 100644
--- a/src/st/dre/update_stage_entities.c
+++ b/src/st/dre/update_stage_entities.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <stage.h>
 
 #include "../update_stage_entities.h"
diff --git a/src/st/e_bone_scimitar.h b/src/st/e_bone_scimitar.h
index 163f931f60..6590e17f9a 100644
--- a/src/st/e_bone_scimitar.h
+++ b/src/st/e_bone_scimitar.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "sfx.h"
 
 typedef enum {
diff --git a/src/st/e_breakable.h b/src/st/e_breakable.h
index f687ce03b0..4fdee87722 100644
--- a/src/st/e_breakable.h
+++ b/src/st/e_breakable.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <stage.h>
 #include <sfx.h>
 
diff --git a/src/st/e_collect.h b/src/st/e_collect.h
index 3e4c9e8fb7..332850bb43 100644
--- a/src/st/e_collect.h
+++ b/src/st/e_collect.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 //
 // Section Sizes:
 //
diff --git a/src/st/e_merman.h b/src/st/e_merman.h
index ab850cea7d..2e61fb9e55 100644
--- a/src/st/e_merman.h
+++ b/src/st/e_merman.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 /*
  * Entity: Merman
  * Stages: NO3, NP3
diff --git a/src/st/e_merman2.h b/src/st/e_merman2.h
index aa8da434fa..677e60d080 100644
--- a/src/st/e_merman2.h
+++ b/src/st/e_merman2.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 /*
  * Entity: Merman2
  * Stages: NO3, NP3
diff --git a/src/st/e_misc.h b/src/st/e_misc.h
index b03025c4b6..e20b3f47f3 100644
--- a/src/st/e_misc.h
+++ b/src/st/e_misc.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <stage.h>
 
 #ifndef CASTLE_FLAG_BANK
diff --git a/src/st/e_particles.h b/src/st/e_particles.h
index ebd51b6365..c8303fa1f9 100644
--- a/src/st/e_particles.h
+++ b/src/st/e_particles.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <stage.h>
 
 #if defined(VERSION_HD)
diff --git a/src/st/e_red_door.h b/src/st/e_red_door.h
index 18d6e7c443..542d390522 100644
--- a/src/st/e_red_door.h
+++ b/src/st/e_red_door.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <stage.h>
 #include "sfx.h"
 
diff --git a/src/st/e_room_fg.h b/src/st/e_room_fg.h
index 1de0517ded..5b9ae53891 100644
--- a/src/st/e_room_fg.h
+++ b/src/st/e_room_fg.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <stage.h>
 
 #if !defined(VERSION_PSP)
diff --git a/src/st/e_stage_name.h b/src/st/e_stage_name.h
index b0f8e62c26..b4a0fe1b05 100644
--- a/src/st/e_stage_name.h
+++ b/src/st/e_stage_name.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "stage.h"
 
 #ifndef CASTLE_FLAG_BANK
diff --git a/src/st/entity_big_red_fireball.h b/src/st/entity_big_red_fireball.h
index ce4900d54b..f01c141f41 100644
--- a/src/st/entity_big_red_fireball.h
+++ b/src/st/entity_big_red_fireball.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Not used in any current overlays. Seems to resemble Gaibon's big fireball,
 // but is not actually called in NZ0. Will need to check future overlays for
 // any actual uses.
diff --git a/src/st/entity_damage_display.h b/src/st/entity_damage_display.h
index db0fc47989..e921904eb9 100644
--- a/src/st/entity_damage_display.h
+++ b/src/st/entity_damage_display.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 extern u16 g_eDamageDisplayInit[];
 extern u16 g_eDamageDisplayClut[];
 
diff --git a/src/st/entity_dummy.h b/src/st/entity_dummy.h
index 906a843211..2d7f92b59f 100644
--- a/src/st/entity_dummy.h
+++ b/src/st/entity_dummy.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 void EntityDummy(Entity* arg0) {
     if (!arg0->step) {
         arg0->step++;
diff --git a/src/st/entity_enemy_blood.h b/src/st/entity_enemy_blood.h
index 7b88b3f1e6..90c3bee176 100644
--- a/src/st/entity_enemy_blood.h
+++ b/src/st/entity_enemy_blood.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 void EntityEnemyBlood(Entity* self) {
     const int NParticles = 12;
     FakePrim* prim;
diff --git a/src/st/entity_explosion.h b/src/st/entity_explosion.h
index 7c41e6ca91..ca880954bb 100644
--- a/src/st/entity_explosion.h
+++ b/src/st/entity_explosion.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 extern u16 g_InitializeEntityData0[];
 extern s32 g_ExplosionYVelocities[];
 extern u8* g_ExplosionAnimations[];
diff --git a/src/st/entity_explosion_spawn.h b/src/st/entity_explosion_spawn.h
index 08772fe64c..bc4a351dc8 100644
--- a/src/st/entity_explosion_spawn.h
+++ b/src/st/entity_explosion_spawn.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 void EntityExplosionSpawn(u16 arg0, u16 arg1) {
     Entity* entity;
 
diff --git a/src/st/entity_intense_explosion.h b/src/st/entity_intense_explosion.h
index 9d6d268200..51e220548c 100644
--- a/src/st/entity_intense_explosion.h
+++ b/src/st/entity_intense_explosion.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 void EntityIntenseExplosion(Entity* self) {
     if (!self->step) {
         InitializeEntity(g_InitializeEntityData0);
diff --git a/src/st/entity_message_box.h b/src/st/entity_message_box.h
index d4b780590b..3b3511844f 100644
--- a/src/st/entity_message_box.h
+++ b/src/st/entity_message_box.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 
 // params: message box duration
 // ext.messageBox.label: box size and text to render
diff --git a/src/st/entity_olrox_drool.h b/src/st/entity_olrox_drool.h
index 7c2f27c604..2f3a41fe22 100644
--- a/src/st/entity_olrox_drool.h
+++ b/src/st/entity_olrox_drool.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Purpose is not 100% clear. Creates a falling blue droplet that sizzles after
 // hitting the ground. In existing overlays, this entity is not used. But looks
 // like Olrox's drool, so using that until we find any other uses.
diff --git a/src/st/entity_relic_orb.h b/src/st/entity_relic_orb.h
index 97b111ba44..3b42979905 100644
--- a/src/st/entity_relic_orb.h
+++ b/src/st/entity_relic_orb.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "stage.h"
 
 const char* g_RelicOrbTexts[] = {
diff --git a/src/st/entity_soul_steal_orb.h b/src/st/entity_soul_steal_orb.h
index c096ef5749..d0aa2aace0 100644
--- a/src/st/entity_soul_steal_orb.h
+++ b/src/st/entity_soul_steal_orb.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // The white flying orbs of energy that Alucard summons as part of the Soul
 // Steal spell
 void EntitySoulStealOrb(Entity* self) {
diff --git a/src/st/entity_unkId13.h b/src/st/entity_unkId13.h
index 3011058d51..4164de72e2 100644
--- a/src/st/entity_unkId13.h
+++ b/src/st/entity_unkId13.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 extern u16 g_InitDataEnt13[];
 
 void EntityUnkId13(Entity* self) {
diff --git a/src/st/entity_unkId14.h b/src/st/entity_unkId14.h
index 24c4989259..a45d17af0f 100644
--- a/src/st/entity_unkId14.h
+++ b/src/st/entity_unkId14.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 extern s32 unk14_yVel[];
 extern u8 unk14_startFrame[];
 extern u16 unk14_lifetime[];
diff --git a/src/st/entity_unkId14_spawner.h b/src/st/entity_unkId14_spawner.h
index 0efb16393f..75b4df316c 100644
--- a/src/st/entity_unkId14_spawner.h
+++ b/src/st/entity_unkId14_spawner.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 extern u16 g_eUnk14SpawnRots[];
 
 void EntityUnkId14Spawner(
diff --git a/src/st/entity_unkId15.h b/src/st/entity_unkId15.h
index fae50a7030..46f266db2a 100644
--- a/src/st/entity_unkId15.h
+++ b/src/st/entity_unkId15.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 extern s16 unk15_rot[];
 extern s32 unk15_yVel[];
 
diff --git a/src/st/entity_unkId15_spawner.h b/src/st/entity_unkId15_spawner.h
index 7825e8fc86..d8d6b92be9 100644
--- a/src/st/entity_unkId15_spawner.h
+++ b/src/st/entity_unkId15_spawner.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 void EntityUnkId15Spawner(
     Entity* self, u8 count, u8 params, s32 x, s32 y, u8 arg5, s16 xGap) {
 
diff --git a/src/st/entity_unk_id12.h b/src/st/entity_unk_id12.h
index 5254104a96..ffe1c203e7 100644
--- a/src/st/entity_unk_id12.h
+++ b/src/st/entity_unk_id12.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 void EntityUnkId12(Entity* entity) {
     u16 var_s0;
     u16 params;
diff --git a/src/st/fall_entity.h b/src/st/fall_entity.h
index 8645c15b1f..b8d2dfee3d 100644
--- a/src/st/fall_entity.h
+++ b/src/st/fall_entity.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 void FallEntity(void) {
     if (g_CurrentEntity->velocityY < FALL_TERMINAL_VELOCITY) {
         g_CurrentEntity->velocityY += FALL_GRAVITY;
diff --git a/src/st/find_entity_horizontal.h b/src/st/find_entity_horizontal.h
index beaaa013cc..40dc07fa4e 100644
--- a/src/st/find_entity_horizontal.h
+++ b/src/st/find_entity_horizontal.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 /*
  * Scans `g_LayoutObjVertical` looking for the next element with
  * an x  position to the right of the provided argument or the end
diff --git a/src/st/find_entity_vertical.h b/src/st/find_entity_vertical.h
index 71efff27bb..f9e887920d 100644
--- a/src/st/find_entity_vertical.h
+++ b/src/st/find_entity_vertical.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 /*
  * Scans `g_LayoutObjVertical` looking for the next element with
  * a y position above the provided argument or the end of the list.
diff --git a/src/st/get_angle_between_entities.h b/src/st/get_angle_between_entities.h
index a272d35e12..4a13e73f54 100644
--- a/src/st/get_angle_between_entities.h
+++ b/src/st/get_angle_between_entities.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 u16 GetAngleBetweenEntities(Entity* a, Entity* b) {
     s32 diffX = b->posX.i.hi - a->posX.i.hi;
     s32 diffY = b->posY.i.hi - a->posY.i.hi;
diff --git a/src/st/get_angle_between_entities_shifted.h b/src/st/get_angle_between_entities_shifted.h
index 633d14c4ea..d6d6431847 100644
--- a/src/st/get_angle_between_entities_shifted.h
+++ b/src/st/get_angle_between_entities_shifted.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 u8 GetAngleBetweenEntitiesShifted(Entity* a, Entity* b) {
     s32 diffX = (u16)b->posX.i.hi - (u16)a->posX.i.hi;
     s32 diffY = (u16)b->posY.i.hi - (u16)a->posY.i.hi;
diff --git a/src/st/get_angle_point_to_entity.h b/src/st/get_angle_point_to_entity.h
index 36452bccec..1a1000f221 100644
--- a/src/st/get_angle_point_to_entity.h
+++ b/src/st/get_angle_point_to_entity.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 u16 GetAnglePointToEntity(s32 x, s32 y) {
     s16 diffX = x - (u16)g_CurrentEntity->posX.i.hi;
     s16 diffY = y - (u16)g_CurrentEntity->posY.i.hi;
diff --git a/src/st/get_angle_point_to_entity_shifted.h b/src/st/get_angle_point_to_entity_shifted.h
index 33096436c6..849ecd9d7c 100644
--- a/src/st/get_angle_point_to_entity_shifted.h
+++ b/src/st/get_angle_point_to_entity_shifted.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 u8 GetAnglePointToEntityShifted(s32 x, s32 y) {
     s32 diffX = x - (u16)g_CurrentEntity->posX.i.hi;
     s32 diffY = y - (u16)g_CurrentEntity->posY.i.hi;
diff --git a/src/st/get_distance_to_player_x.h b/src/st/get_distance_to_player_x.h
index 28ef176ae0..2c4ea4a564 100644
--- a/src/st/get_distance_to_player_x.h
+++ b/src/st/get_distance_to_player_x.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Absolute distance from g_CurrentEntity to the player in the X Axis
 s32 GetDistanceToPlayerX(void) {
     s16 xDistance = g_CurrentEntity->posX.i.hi - PLAYER.posX.i.hi;
diff --git a/src/st/get_distance_to_player_y.h b/src/st/get_distance_to_player_y.h
index c139576e55..bde0f376c8 100644
--- a/src/st/get_distance_to_player_y.h
+++ b/src/st/get_distance_to_player_y.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Absolute distance from g_CurrentEntity to the player in the Y Axis
 s32 GetDistanceToPlayerY(void) {
     s32 yDistance = g_CurrentEntity->posY.i.hi - PLAYER.posY.i.hi;
diff --git a/src/st/get_normalized_angle.h b/src/st/get_normalized_angle.h
index f0433b2840..bfb9b428a4 100644
--- a/src/st/get_normalized_angle.h
+++ b/src/st/get_normalized_angle.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 u16 GetNormalizedAngle(u16 arg0, u16 arg1, u16 arg2) {
     u16 temp_a2;
     u16 var_v0;
diff --git a/src/st/get_player_collision_with.h b/src/st/get_player_collision_with.h
index 2add3d1b27..9d827c8ad3 100644
--- a/src/st/get_player_collision_with.h
+++ b/src/st/get_player_collision_with.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // This function checks if the player collides with the specified entity
 // and from which direction.
 // w and h holds the collider size of the entity
diff --git a/src/st/get_side_to_player.h b/src/st/get_side_to_player.h
index bb830862b4..4a935603c4 100644
--- a/src/st/get_side_to_player.h
+++ b/src/st/get_side_to_player.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 /**
  * Returns the player's side position relative to g_CurrentEntity
  * 0 = Player is on the right side
diff --git a/src/st/get_sine.h b/src/st/get_sine.h
index 5feac8add4..e2a0d7f6c0 100644
--- a/src/st/get_sine.h
+++ b/src/st/get_sine.h
@@ -1 +1,2 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 s16 GetSine(u8 arg0) { return g_SineTable[arg0]; }
diff --git a/src/st/get_sine_scaled.h b/src/st/get_sine_scaled.h
index 8f21a4e8e5..b2aeeb0914 100644
--- a/src/st/get_sine_scaled.h
+++ b/src/st/get_sine_scaled.h
@@ -1 +1,2 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 s32 GetSineScaled(u8 arg0, s16 arg1) { return g_SineTable[arg0] * arg1; }
diff --git a/src/st/init_entity.h b/src/st/init_entity.h
index 6632fabd80..cac2baa069 100644
--- a/src/st/init_entity.h
+++ b/src/st/init_entity.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 void InitializeEntity(u16 arg0[]) {
     u16 enemyId;
     EnemyDef* enemyDef;
diff --git a/src/st/init_room_entities.h b/src/st/init_room_entities.h
index b1c7b89cf6..87dfa6cc14 100644
--- a/src/st/init_room_entities.h
+++ b/src/st/init_room_entities.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 /*
  * Sets up layout arrays and initializes stage state to
  * initial values.
diff --git a/src/st/initialize_unk_entity.h b/src/st/initialize_unk_entity.h
index 8f6a368f38..37e9b4d205 100644
--- a/src/st/initialize_unk_entity.h
+++ b/src/st/initialize_unk_entity.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 extern u8 g_UnkEntityAnimData[];
 void InitializeUnkEntity(Entity* self) {
     if (!self->step) {
diff --git a/src/st/mad/11D3C.c b/src/st/mad/11D3C.c
index 79fd15a602..c6e5d78664 100644
--- a/src/st/mad/11D3C.c
+++ b/src/st/mad/11D3C.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "mad.h"
 #include "sfx.h"
 
diff --git a/src/st/mad/15520.c b/src/st/mad/15520.c
index b090bb5fe5..ecce6ffd4c 100644
--- a/src/st/mad/15520.c
+++ b/src/st/mad/15520.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "mad.h"
 
 void EntityHeartDrop(Entity* self) {
diff --git a/src/st/mad/D8C8.c b/src/st/mad/D8C8.c
index e02f26efc1..b644f3c828 100644
--- a/src/st/mad/D8C8.c
+++ b/src/st/mad/D8C8.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "mad.h"
 #include "sfx.h"
 
diff --git a/src/st/mad/bss.c b/src/st/mad/bss.c
index a5548bdabc..87440c46b5 100644
--- a/src/st/mad/bss.c
+++ b/src/st/mad/bss.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <types.h>
 
 u16 D_801997E8[768];
diff --git a/src/st/mad/collision.c b/src/st/mad/collision.c
index e00cc88b3f..5e4c518354 100644
--- a/src/st/mad/collision.c
+++ b/src/st/mad/collision.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "mad.h"
 #include "sfx.h"
 
diff --git a/src/st/mad/create_entity.c b/src/st/mad/create_entity.c
index 15ac3d18da..9d29ce3521 100644
--- a/src/st/mad/create_entity.c
+++ b/src/st/mad/create_entity.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "mad.h"
 
 // BSS START size = 0x16
diff --git a/src/st/mad/e_collect.c b/src/st/mad/e_collect.c
index 4e15736e5c..1275c92ace 100644
--- a/src/st/mad/e_collect.c
+++ b/src/st/mad/e_collect.c
@@ -1,2 +1,3 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "mad.h"
 #include "../e_collect.h"
diff --git a/src/st/mad/e_red_door.c b/src/st/mad/e_red_door.c
index c0a85254b0..6e6f7e88cc 100644
--- a/src/st/mad/e_red_door.c
+++ b/src/st/mad/e_red_door.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "mad.h"
 
 #include "../e_red_door.h"
diff --git a/src/st/mad/entity_relic_orb.c b/src/st/mad/entity_relic_orb.c
index 6b16295148..e15dedb5dc 100644
--- a/src/st/mad/entity_relic_orb.c
+++ b/src/st/mad/entity_relic_orb.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "mad.h"
 
 extern u16 D_801997E8[0x600]; // this should fall into the SBSS section
diff --git a/src/st/mad/header.c b/src/st/mad/header.c
index fa5b592fba..da553f1e92 100644
--- a/src/st/mad/header.c
+++ b/src/st/mad/header.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "mad.h"
 
 extern RoomHeader g_Rooms[];
diff --git a/src/st/mad/mad.h b/src/st/mad/mad.h
index f39b115836..50878a9539 100644
--- a/src/st/mad/mad.h
+++ b/src/st/mad/mad.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #ifndef MAD_H
 #define MAD_H
 
diff --git a/src/st/mad/prim_helpers.c b/src/st/mad/prim_helpers.c
index 557c12c1fc..d862cb84c9 100644
--- a/src/st/mad/prim_helpers.c
+++ b/src/st/mad/prim_helpers.c
@@ -1,2 +1,3 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "mad.h"
 #include "../prim_helpers.h"
diff --git a/src/st/mad/st_update.c b/src/st/mad/st_update.c
index d6525c7985..e1710dc781 100644
--- a/src/st/mad/st_update.c
+++ b/src/st/mad/st_update.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "mad.h"
 
 #include "../random.h"
diff --git a/src/st/make_entity_from_id.h b/src/st/make_entity_from_id.h
index d2688fd325..9c278ce235 100644
--- a/src/st/make_entity_from_id.h
+++ b/src/st/make_entity_from_id.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 extern PfnEntityUpdate PfnEntityUpdates[];
 void MakeEntityFromId(u16 entityId, Entity* src, Entity* dst) {
     DestroyEntity(dst);
diff --git a/src/st/make_explosions.h b/src/st/make_explosions.h
index 22f958904f..f2ff9b2f82 100644
--- a/src/st/make_explosions.h
+++ b/src/st/make_explosions.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 void MakeExplosions(void) {
     s32 temp_s3;
     s8 temp_s4;
diff --git a/src/st/move_entity.h b/src/st/move_entity.h
index 711c9ba7bf..ca32e46ae4 100644
--- a/src/st/move_entity.h
+++ b/src/st/move_entity.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 void MoveEntity(void) {
     g_CurrentEntity->posX.val += g_CurrentEntity->velocityX;
     g_CurrentEntity->posY.val += g_CurrentEntity->velocityY;
diff --git a/src/st/no3/377D4.c b/src/st/no3/377D4.c
index 590101992f..09f5caddba 100644
--- a/src/st/no3/377D4.c
+++ b/src/st/no3/377D4.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 /*
  * File: 377D4.c
  * Overlay: NO3
diff --git a/src/st/no3/3C4EC.c b/src/st/no3/3C4EC.c
index 2f39c06bb8..aa684e0469 100644
--- a/src/st/no3/3C4EC.c
+++ b/src/st/no3/3C4EC.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "no3.h"
 
 // pushes alucard to the right
diff --git a/src/st/no3/3E134.c b/src/st/no3/3E134.c
index cb2b7d4e47..bd61f7173e 100644
--- a/src/st/no3/3E134.c
+++ b/src/st/no3/3E134.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "no3.h"
 
 // intro owl and leaves
diff --git a/src/st/no3/3FF00.c b/src/st/no3/3FF00.c
index d1e1b755cc..f81b8a14e1 100644
--- a/src/st/no3/3FF00.c
+++ b/src/st/no3/3FF00.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "no3.h"
 #include "sfx.h"
 
diff --git a/src/st/no3/44C64.c b/src/st/no3/44C64.c
index e00f58bf67..d5f5e261af 100644
--- a/src/st/no3/44C64.c
+++ b/src/st/no3/44C64.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "no3.h"
 #include "sfx.h"
 
diff --git a/src/st/no3/48A84.c b/src/st/no3/48A84.c
index 36bbe51c34..9c934c8a20 100644
--- a/src/st/no3/48A84.c
+++ b/src/st/no3/48A84.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "no3.h"
 
 #include "../check_coll_offsets.h"
diff --git a/src/st/no3/516B4.c b/src/st/no3/516B4.c
index cac8d031b5..bcf09a2499 100644
--- a/src/st/no3/516B4.c
+++ b/src/st/no3/516B4.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "no3.h"
 #include "../e_merman2.h"
 
diff --git a/src/st/no3/53F38.c b/src/st/no3/53F38.c
index d1880eb6a6..990baf1ec6 100644
--- a/src/st/no3/53F38.c
+++ b/src/st/no3/53F38.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "no3.h"
 #include "../e_merman.h"
 
diff --git a/src/st/no3/56264.c b/src/st/no3/56264.c
index 5f36b06e48..fe4e15025b 100644
--- a/src/st/no3/56264.c
+++ b/src/st/no3/56264.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "no3.h"
 
 void EntityBat(Entity* entity) {
diff --git a/src/st/no3/564B0.c b/src/st/no3/564B0.c
index 788bfe2a04..27a60c6567 100644
--- a/src/st/no3/564B0.c
+++ b/src/st/no3/564B0.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "no3.h"
 #include "sfx.h"
 
diff --git a/src/st/no3/blit_char.c b/src/st/no3/blit_char.c
index dcd77c4c0e..4671969f21 100644
--- a/src/st/no3/blit_char.c
+++ b/src/st/no3/blit_char.c
@@ -1 +1,2 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../blit_char.h"
diff --git a/src/st/no3/bss.c b/src/st/no3/bss.c
index 9300a5fa20..8feed43f0d 100644
--- a/src/st/no3/bss.c
+++ b/src/st/no3/bss.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <common.h>
 
 STATIC_PAD_BSS(3072);
diff --git a/src/st/no3/collision.c b/src/st/no3/collision.c
index 075265617f..765a667bf0 100644
--- a/src/st/no3/collision.c
+++ b/src/st/no3/collision.c
@@ -1 +1,2 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../collision.h"
diff --git a/src/st/no3/create_entity.c b/src/st/no3/create_entity.c
index e5249fb876..3192735eb3 100644
--- a/src/st/no3/create_entity.c
+++ b/src/st/no3/create_entity.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <common.h>
 
 STATIC_PAD_BSS(96);
diff --git a/src/st/no3/deathcutscene.c b/src/st/no3/deathcutscene.c
index 52d3014759..c7896c71ea 100644
--- a/src/st/no3/deathcutscene.c
+++ b/src/st/no3/deathcutscene.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "no3.h"
 
 void func_801BE544(void) {
diff --git a/src/st/no3/e_bone_scimitar.c b/src/st/no3/e_bone_scimitar.c
index 0bb9cf991e..ea60d25995 100644
--- a/src/st/no3/e_bone_scimitar.c
+++ b/src/st/no3/e_bone_scimitar.c
@@ -1,2 +1,3 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "no3.h"
 #include "../e_bone_scimitar.h"
diff --git a/src/st/no3/e_collect.c b/src/st/no3/e_collect.c
index f819390dbc..aa502d8c9f 100644
--- a/src/st/no3/e_collect.c
+++ b/src/st/no3/e_collect.c
@@ -1 +1,2 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../e_collect.h"
diff --git a/src/st/no3/e_red_door.c b/src/st/no3/e_red_door.c
index cd9dc7a561..dd52a75451 100644
--- a/src/st/no3/e_red_door.c
+++ b/src/st/no3/e_red_door.c
@@ -1 +1,2 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../e_red_door.h"
diff --git a/src/st/no3/entity_heart_drop.c b/src/st/no3/entity_heart_drop.c
index cc35181a6f..a066384334 100644
--- a/src/st/no3/entity_heart_drop.c
+++ b/src/st/no3/entity_heart_drop.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "no3.h"
 
 void EntityHeartDrop(Entity* self) {
diff --git a/src/st/no3/entity_message_box.c b/src/st/no3/entity_message_box.c
index 3532329fdb..72489d3b99 100644
--- a/src/st/no3/entity_message_box.c
+++ b/src/st/no3/entity_message_box.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "no3.h"
 
 #include "../entity_message_box.h"
diff --git a/src/st/no3/entity_relic_orb.c b/src/st/no3/entity_relic_orb.c
index 4b30d98a65..6fe9643eec 100644
--- a/src/st/no3/entity_relic_orb.c
+++ b/src/st/no3/entity_relic_orb.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "no3.h"
 
 #include "../entity_relic_orb.h"
diff --git a/src/st/no3/header.c b/src/st/no3/header.c
index 5381a63940..7d3dfec412 100644
--- a/src/st/no3/header.c
+++ b/src/st/no3/header.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "no3.h"
 
 extern RoomHeader OVL_EXPORT(rooms)[];
diff --git a/src/st/no3/no3.h b/src/st/no3/no3.h
index 78f2e5fe65..db770751c0 100644
--- a/src/st/no3/no3.h
+++ b/src/st/no3/no3.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "stage.h"
 
 #define OVL_EXPORT(x) NO3_##x
diff --git a/src/st/no3/player_water_effect.c b/src/st/no3/player_water_effect.c
index 315a51e6ea..5e3e5b3892 100644
--- a/src/st/no3/player_water_effect.c
+++ b/src/st/no3/player_water_effect.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "no3.h"
 
 static u16 func_801D0A2C(s16 arg0, s16 arg1, s16 arg2, s16* arg3) {
diff --git a/src/st/no3/prim_helpers.c b/src/st/no3/prim_helpers.c
index 96d47f7df3..bf72d43920 100644
--- a/src/st/no3/prim_helpers.c
+++ b/src/st/no3/prim_helpers.c
@@ -1,2 +1,3 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <game.h>
 #include "../prim_helpers.h"
diff --git a/src/st/no3/st_update.c b/src/st/no3/st_update.c
index 8477b24783..ecc3e8bbf5 100644
--- a/src/st/no3/st_update.c
+++ b/src/st/no3/st_update.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <stage.h>
 
 static u16 UNK_Invincibility0[] = {
diff --git a/src/st/no3/tile_data.c b/src/st/no3/tile_data.c
index e8459c3b54..8225448043 100644
--- a/src/st/no3/tile_data.c
+++ b/src/st/no3/tile_data.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <stage.h>
 
 #include "tilemap_18838.h"
diff --git a/src/st/np3/32830.c b/src/st/np3/32830.c
index 04f749c774..a89e69cab2 100644
--- a/src/st/np3/32830.c
+++ b/src/st/np3/32830.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "np3.h"
 #include "sfx.h"
 
diff --git a/src/st/np3/363FC.c b/src/st/np3/363FC.c
index 6e2043e640..f21767c523 100644
--- a/src/st/np3/363FC.c
+++ b/src/st/np3/363FC.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "np3.h"
 
 // Make a EntityWargExplosionPuffOpaque
diff --git a/src/st/np3/44DCC.c b/src/st/np3/44DCC.c
index a4338645f0..1a515de8c1 100644
--- a/src/st/np3/44DCC.c
+++ b/src/st/np3/44DCC.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 /*
  * Overlay: NP3
  * Description: Merman Room
diff --git a/src/st/np3/48238.c b/src/st/np3/48238.c
index ddb8b17dc7..5bb5ba18e7 100644
--- a/src/st/np3/48238.c
+++ b/src/st/np3/48238.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 /*
  * Overlay: NP3
  * Description: Merman Room (2)
diff --git a/src/st/np3/4997C.c b/src/st/np3/4997C.c
index d9adec87c5..338193b1a1 100644
--- a/src/st/np3/4997C.c
+++ b/src/st/np3/4997C.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "np3.h"
 
 void EntityBat(Entity* entity) {
diff --git a/src/st/np3/49BC8.c b/src/st/np3/49BC8.c
index 8f2d9c29de..4f37215097 100644
--- a/src/st/np3/49BC8.c
+++ b/src/st/np3/49BC8.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "np3.h"
 #include "sfx.h"
 
diff --git a/src/st/np3/49F98.c b/src/st/np3/49F98.c
index eab8fc25a7..939538e9e0 100644
--- a/src/st/np3/49F98.c
+++ b/src/st/np3/49F98.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 /*
  * Overlay: NP3
  * Enemy: Bloody Zombie
diff --git a/src/st/np3/4B018.c b/src/st/np3/4B018.c
index c2e371a116..7d9757e06f 100644
--- a/src/st/np3/4B018.c
+++ b/src/st/np3/4B018.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "np3.h"
 #include "sfx.h"
 
diff --git a/src/st/np3/4D540.c b/src/st/np3/4D540.c
index 6c5afbcf30..e7879b6d3b 100644
--- a/src/st/np3/4D540.c
+++ b/src/st/np3/4D540.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "np3.h"
 
 void func_801CD540(Entity* self) {
diff --git a/src/st/np3/4E69C.c b/src/st/np3/4E69C.c
index 6a8200708f..28f2f5a90a 100644
--- a/src/st/np3/4E69C.c
+++ b/src/st/np3/4E69C.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "np3.h"
 #include "sfx.h"
 
diff --git a/src/st/np3/4F5B8.c b/src/st/np3/4F5B8.c
index c6841f42b6..0b16175544 100644
--- a/src/st/np3/4F5B8.c
+++ b/src/st/np3/4F5B8.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "np3.h"
 #include "sfx.h"
 
diff --git a/src/st/np3/blade.c b/src/st/np3/blade.c
index 7e23fe06f7..3fa9e0d48f 100644
--- a/src/st/np3/blade.c
+++ b/src/st/np3/blade.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "np3.h"
 #include "sfx.h"
 
diff --git a/src/st/np3/blit_char.c b/src/st/np3/blit_char.c
index dcd77c4c0e..4671969f21 100644
--- a/src/st/np3/blit_char.c
+++ b/src/st/np3/blit_char.c
@@ -1 +1,2 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../blit_char.h"
diff --git a/src/st/np3/bss.c b/src/st/np3/bss.c
index 2772f20aaf..0d6e6fdad6 100644
--- a/src/st/np3/bss.c
+++ b/src/st/np3/bss.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <common.h>
 
 STATIC_PAD_BSS(3072);
diff --git a/src/st/np3/collision.c b/src/st/np3/collision.c
index 075265617f..765a667bf0 100644
--- a/src/st/np3/collision.c
+++ b/src/st/np3/collision.c
@@ -1 +1,2 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../collision.h"
diff --git a/src/st/np3/create_entity.c b/src/st/np3/create_entity.c
index 10c09cbabf..9754da4b19 100644
--- a/src/st/np3/create_entity.c
+++ b/src/st/np3/create_entity.c
@@ -1 +1,2 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../create_entity.h"
diff --git a/src/st/np3/e_bone_scimitar.c b/src/st/np3/e_bone_scimitar.c
index d8720390ec..1a5fd0ebcb 100644
--- a/src/st/np3/e_bone_scimitar.c
+++ b/src/st/np3/e_bone_scimitar.c
@@ -1,2 +1,3 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "np3.h"
 #include "../e_bone_scimitar.h"
diff --git a/src/st/np3/e_breakable.c b/src/st/np3/e_breakable.c
index 712f6292c7..3aef2de168 100644
--- a/src/st/np3/e_breakable.c
+++ b/src/st/np3/e_breakable.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "np3.h"
 
 #include "../e_breakable.h"
diff --git a/src/st/np3/e_collect.c b/src/st/np3/e_collect.c
index f819390dbc..aa502d8c9f 100644
--- a/src/st/np3/e_collect.c
+++ b/src/st/np3/e_collect.c
@@ -1 +1,2 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../e_collect.h"
diff --git a/src/st/np3/e_init.c b/src/st/np3/e_init.c
index be7943ec78..f3d86c7df6 100644
--- a/src/st/np3/e_init.c
+++ b/src/st/np3/e_init.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <stage.h>
 
 void EntityBreakable(Entity* self);
diff --git a/src/st/np3/e_misc.c b/src/st/np3/e_misc.c
index f76f360d70..373f5d49b2 100644
--- a/src/st/np3/e_misc.c
+++ b/src/st/np3/e_misc.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "np3.h"
 
 #include "../entity_relic_orb.h"
diff --git a/src/st/np3/e_particles.c b/src/st/np3/e_particles.c
index f07a9a67b4..04d492c03a 100644
--- a/src/st/np3/e_particles.c
+++ b/src/st/np3/e_particles.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "np3.h"
 
 #include "../entity_soul_steal_orb.h"
diff --git a/src/st/np3/e_red_door.c b/src/st/np3/e_red_door.c
index cd9dc7a561..dd52a75451 100644
--- a/src/st/np3/e_red_door.c
+++ b/src/st/np3/e_red_door.c
@@ -1 +1,2 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../e_red_door.h"
diff --git a/src/st/np3/e_room_fg.c b/src/st/np3/e_room_fg.c
index d13f2e7fb2..18de63d4d4 100644
--- a/src/st/np3/e_room_fg.c
+++ b/src/st/np3/e_room_fg.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "np3.h"
 
 extern ObjInit D_801820F0[];
diff --git a/src/st/np3/e_stage_name.c b/src/st/np3/e_stage_name.c
index ed088d2f1f..debf7217cb 100644
--- a/src/st/np3/e_stage_name.c
+++ b/src/st/np3/e_stage_name.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "np3.h"
 
 #include "../e_stage_name.h"
diff --git a/src/st/np3/gaibon.c b/src/st/np3/gaibon.c
index aa9a4115df..1cff68ce15 100644
--- a/src/st/np3/gaibon.c
+++ b/src/st/np3/gaibon.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "np3.h"
 #include "sfx.h"
 
diff --git a/src/st/np3/header.c b/src/st/np3/header.c
index a8c0365fce..32d023f50a 100644
--- a/src/st/np3/header.c
+++ b/src/st/np3/header.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "np3.h"
 
 extern RoomHeader OVL_EXPORT(rooms)[];
diff --git a/src/st/np3/np3.h b/src/st/np3/np3.h
index e0a36bbd6f..697451d197 100644
--- a/src/st/np3/np3.h
+++ b/src/st/np3/np3.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "stage.h"
 
 #define OVL_EXPORT(x) NP3_##x
diff --git a/src/st/np3/player_water_effect.c b/src/st/np3/player_water_effect.c
index d8702513c5..91cdf70aa5 100644
--- a/src/st/np3/player_water_effect.c
+++ b/src/st/np3/player_water_effect.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "np3.h"
 
 static u16 func_801C4144(s16 arg0, s16 arg1, s16 arg2, s16* arg3) {
diff --git a/src/st/np3/popup.c b/src/st/np3/popup.c
index 96fe1e10c7..7de7966d15 100644
--- a/src/st/np3/popup.c
+++ b/src/st/np3/popup.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "np3.h"
 
 #include "../popup.h"
diff --git a/src/st/np3/prim_helpers.c b/src/st/np3/prim_helpers.c
index 96d47f7df3..bf72d43920 100644
--- a/src/st/np3/prim_helpers.c
+++ b/src/st/np3/prim_helpers.c
@@ -1,2 +1,3 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <game.h>
 #include "../prim_helpers.h"
diff --git a/src/st/np3/slogra.c b/src/st/np3/slogra.c
index 6efd3f3e4a..efbff88b41 100644
--- a/src/st/np3/slogra.c
+++ b/src/st/np3/slogra.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 /*
  * Overlay: NP3
  * Enemy: Slogra & Gaibon Boss
diff --git a/src/st/np3/st_common.c b/src/st/np3/st_common.c
index b9827d9d09..05c398e389 100644
--- a/src/st/np3/st_common.c
+++ b/src/st/np3/st_common.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "np3.h"
 
 #include "../../destroy_entity.h"
diff --git a/src/st/np3/st_debug.c b/src/st/np3/st_debug.c
index e6ac092afa..5304da6db9 100644
--- a/src/st/np3/st_debug.c
+++ b/src/st/np3/st_debug.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "np3.h"
 
 void func_801B246C(Entity* self) {
diff --git a/src/st/np3/st_update.c b/src/st/np3/st_update.c
index 8477b24783..ecc3e8bbf5 100644
--- a/src/st/np3/st_update.c
+++ b/src/st/np3/st_update.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <stage.h>
 
 static u16 UNK_Invincibility0[] = {
diff --git a/src/st/np3/tile_data.c b/src/st/np3/tile_data.c
index fa580751fd..5b32321fb2 100644
--- a/src/st/np3/tile_data.c
+++ b/src/st/np3/tile_data.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <stage.h>
 
 #include "tilemap_168F4.h"
diff --git a/src/st/nz0/30958.c b/src/st/nz0/30958.c
index 35ada6a535..3a246a128e 100644
--- a/src/st/nz0/30958.c
+++ b/src/st/nz0/30958.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 /*
  * File: 394D4.c
  * Overlay: NZ0
diff --git a/src/st/nz0/311C0.c b/src/st/nz0/311C0.c
index 547ca51fa6..e1b66adc81 100644
--- a/src/st/nz0/311C0.c
+++ b/src/st/nz0/311C0.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "nz0.h"
 
 // bust with red eyes that can have a candle on it
diff --git a/src/st/nz0/36DE4.c b/src/st/nz0/36DE4.c
index c597ff8dce..f747842c96 100644
--- a/src/st/nz0/36DE4.c
+++ b/src/st/nz0/36DE4.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "nz0.h"
 #include "sfx.h"
 
diff --git a/src/st/nz0/4070C.c b/src/st/nz0/4070C.c
index 16ef708224..ec74ed7d32 100644
--- a/src/st/nz0/4070C.c
+++ b/src/st/nz0/4070C.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "nz0.h"
 
 #include "../check_coll_offsets.h"
diff --git a/src/st/nz0/blit_char.c b/src/st/nz0/blit_char.c
index dcd77c4c0e..4671969f21 100644
--- a/src/st/nz0/blit_char.c
+++ b/src/st/nz0/blit_char.c
@@ -1 +1,2 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../blit_char.h"
diff --git a/src/st/nz0/bossfight.c b/src/st/nz0/bossfight.c
index 08db8e24bc..9a843045cd 100644
--- a/src/st/nz0/bossfight.c
+++ b/src/st/nz0/bossfight.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "nz0.h"
 #include "sfx.h"
 
diff --git a/src/st/nz0/bss.c b/src/st/nz0/bss.c
index 5dd9dc55ca..c43d8ebe84 100644
--- a/src/st/nz0/bss.c
+++ b/src/st/nz0/bss.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <common.h>
 
 STATIC_PAD_BSS(3072);
diff --git a/src/st/nz0/collision.c b/src/st/nz0/collision.c
index 075265617f..765a667bf0 100644
--- a/src/st/nz0/collision.c
+++ b/src/st/nz0/collision.c
@@ -1 +1,2 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../collision.h"
diff --git a/src/st/nz0/create_entity.c b/src/st/nz0/create_entity.c
index 29364d565e..cd28ea65a2 100644
--- a/src/st/nz0/create_entity.c
+++ b/src/st/nz0/create_entity.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <types.h>
 
 u32 D_801CAA14[24];
diff --git a/src/st/nz0/e_axe_knight.c b/src/st/nz0/e_axe_knight.c
index a45a50d02c..5962989f6b 100644
--- a/src/st/nz0/e_axe_knight.c
+++ b/src/st/nz0/e_axe_knight.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 /*
  * Overlay: NZ0
  * Enemy: Axe Knight
diff --git a/src/st/nz0/e_bloody_skeleton.c b/src/st/nz0/e_bloody_skeleton.c
index ca07bbf4f6..5f0d67bf38 100644
--- a/src/st/nz0/e_bloody_skeleton.c
+++ b/src/st/nz0/e_bloody_skeleton.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 /*
  * Overlay: NZ0
  * Enemy: Blood Skeleton
diff --git a/src/st/nz0/e_bloody_zombie.c b/src/st/nz0/e_bloody_zombie.c
index 7f834b1ac1..04e137b3aa 100644
--- a/src/st/nz0/e_bloody_zombie.c
+++ b/src/st/nz0/e_bloody_zombie.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 /*
  * Overlay: NZ0
  * Enemy: Bloody Zombie
diff --git a/src/st/nz0/e_bone_scimitar.c b/src/st/nz0/e_bone_scimitar.c
index ccfcda1bc2..188b73a986 100644
--- a/src/st/nz0/e_bone_scimitar.c
+++ b/src/st/nz0/e_bone_scimitar.c
@@ -1,2 +1,3 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "nz0.h"
 #include "../e_bone_scimitar.h"
diff --git a/src/st/nz0/e_breakable.c b/src/st/nz0/e_breakable.c
index bbc53af5ce..1f3b9c36cd 100644
--- a/src/st/nz0/e_breakable.c
+++ b/src/st/nz0/e_breakable.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "nz0.h"
 
 static u8 D_80180DE4[] = {4, 1, 4, 2, 0, 0, 0, 0};
diff --git a/src/st/nz0/e_collect.c b/src/st/nz0/e_collect.c
index f819390dbc..aa502d8c9f 100644
--- a/src/st/nz0/e_collect.c
+++ b/src/st/nz0/e_collect.c
@@ -1 +1,2 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../e_collect.h"
diff --git a/src/st/nz0/e_elevator.c b/src/st/nz0/e_elevator.c
index 5fecccc7ab..bf9f1d7ac1 100644
--- a/src/st/nz0/e_elevator.c
+++ b/src/st/nz0/e_elevator.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "nz0.h"
 
 typedef enum ElevatorSubSteps {
diff --git a/src/st/nz0/e_init.c b/src/st/nz0/e_init.c
index 922d2b7687..f87cd94a95 100644
--- a/src/st/nz0/e_init.c
+++ b/src/st/nz0/e_init.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <stage.h>
 
 void EntityBreakableNZ0(Entity*);
diff --git a/src/st/nz0/e_magically_sealed_door.c b/src/st/nz0/e_magically_sealed_door.c
index c6fa557e34..0bf56e760a 100644
--- a/src/st/nz0/e_magically_sealed_door.c
+++ b/src/st/nz0/e_magically_sealed_door.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 /*
  * Overlay: NZ0
  * Entity: Magically Sealed Door
diff --git a/src/st/nz0/e_particles.c b/src/st/nz0/e_particles.c
index 86161180c1..82e69d09db 100644
--- a/src/st/nz0/e_particles.c
+++ b/src/st/nz0/e_particles.c
@@ -1 +1,2 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../e_particles.h"
diff --git a/src/st/nz0/e_red_door.c b/src/st/nz0/e_red_door.c
index eefaa52b1a..6f43d96b5c 100644
--- a/src/st/nz0/e_red_door.c
+++ b/src/st/nz0/e_red_door.c
@@ -1,3 +1,3 @@
-
+// SPDX-License-Identifier: AGPL-3.0-only
 
 #include "../e_red_door.h"
diff --git a/src/st/nz0/e_room_fg.c b/src/st/nz0/e_room_fg.c
index b20c1b8663..b4f033aeb8 100644
--- a/src/st/nz0/e_room_fg.c
+++ b/src/st/nz0/e_room_fg.c
@@ -1 +1,2 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../e_room_fg.h"
diff --git a/src/st/nz0/e_skeleton.c b/src/st/nz0/e_skeleton.c
index 8b78f77ae3..d240e9d5cc 100644
--- a/src/st/nz0/e_skeleton.c
+++ b/src/st/nz0/e_skeleton.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 /*
  * Overlay: NZ0
  * Enemy: Skeleton
diff --git a/src/st/nz0/e_spittle_bone.c b/src/st/nz0/e_spittle_bone.c
index 70f2f572f2..d40d57a095 100644
--- a/src/st/nz0/e_spittle_bone.c
+++ b/src/st/nz0/e_spittle_bone.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 /*
  * Overlay: NZ0
  * Enemy: Spittle Bone
diff --git a/src/st/nz0/e_stage_name.c b/src/st/nz0/e_stage_name.c
index d62fdb9509..31a4c36d7b 100644
--- a/src/st/nz0/e_stage_name.c
+++ b/src/st/nz0/e_stage_name.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "nz0.h"
 
 #include "../e_stage_name.h"
diff --git a/src/st/nz0/e_subweapon_container.c b/src/st/nz0/e_subweapon_container.c
index 6c0c01ded7..c6def31496 100644
--- a/src/st/nz0/e_subweapon_container.c
+++ b/src/st/nz0/e_subweapon_container.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 /*
  * Overlay: NZ0
  * Entity: SubWeapon container
diff --git a/src/st/nz0/entity_heart_drop.c b/src/st/nz0/entity_heart_drop.c
index 405caa475d..a5110b250e 100644
--- a/src/st/nz0/entity_heart_drop.c
+++ b/src/st/nz0/entity_heart_drop.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "nz0.h"
 
 void EntityHeartDrop(Entity* self) {
diff --git a/src/st/nz0/entity_message_box.c b/src/st/nz0/entity_message_box.c
index 0ae48b771d..186267e490 100644
--- a/src/st/nz0/entity_message_box.c
+++ b/src/st/nz0/entity_message_box.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "nz0.h"
 
 #include "../entity_message_box.h"
diff --git a/src/st/nz0/entity_relic_orb.c b/src/st/nz0/entity_relic_orb.c
index d8c1952558..75aeaa4824 100644
--- a/src/st/nz0/entity_relic_orb.c
+++ b/src/st/nz0/entity_relic_orb.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "nz0.h"
 
 #include "../entity_relic_orb.h"
diff --git a/src/st/nz0/gaibon.c b/src/st/nz0/gaibon.c
index 3902b0fc04..108a427a40 100644
--- a/src/st/nz0/gaibon.c
+++ b/src/st/nz0/gaibon.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "nz0.h"
 #include "sfx.h"
 
diff --git a/src/st/nz0/header.c b/src/st/nz0/header.c
index cacfd2057e..308614a857 100644
--- a/src/st/nz0/header.c
+++ b/src/st/nz0/header.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "nz0.h"
 
 extern signed short* spriteBanks[];
diff --git a/src/st/nz0/lifeupspawn.c b/src/st/nz0/lifeupspawn.c
index 8e74eda8ba..174326feed 100644
--- a/src/st/nz0/lifeupspawn.c
+++ b/src/st/nz0/lifeupspawn.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "nz0.h"
 
 // particle effect that spawns life up item
diff --git a/src/st/nz0/maria.c b/src/st/nz0/maria.c
index c60d16c7a7..039156efe0 100644
--- a/src/st/nz0/maria.c
+++ b/src/st/nz0/maria.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "nz0.h"
 #include "sfx.h"
 
diff --git a/src/st/nz0/mariacutscene.c b/src/st/nz0/mariacutscene.c
index 9ebc7ff99f..244bb6baf9 100644
--- a/src/st/nz0/mariacutscene.c
+++ b/src/st/nz0/mariacutscene.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "nz0.h"
 
 // This file consists of EntityMariaCutscene, and all the functions it calls.
diff --git a/src/st/nz0/nz0.h b/src/st/nz0/nz0.h
index bd97b29c81..7c1b11fed8 100644
--- a/src/st/nz0/nz0.h
+++ b/src/st/nz0/nz0.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "stage.h"
 
 #define OVL_EXPORT(x) NZ0_##x
diff --git a/src/st/nz0/popup.c b/src/st/nz0/popup.c
index 8c6e9b6aab..619cd4b9f6 100644
--- a/src/st/nz0/popup.c
+++ b/src/st/nz0/popup.c
@@ -1 +1,2 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../popup.h"
diff --git a/src/st/nz0/prim_helpers.c b/src/st/nz0/prim_helpers.c
index 96d47f7df3..bf72d43920 100644
--- a/src/st/nz0/prim_helpers.c
+++ b/src/st/nz0/prim_helpers.c
@@ -1,2 +1,3 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <game.h>
 #include "../prim_helpers.h"
diff --git a/src/st/nz0/slogra.c b/src/st/nz0/slogra.c
index 3c237895cd..0686d2c515 100644
--- a/src/st/nz0/slogra.c
+++ b/src/st/nz0/slogra.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "nz0.h"
 #include "sfx.h"
 
diff --git a/src/st/nz0/st_common.c b/src/st/nz0/st_common.c
index 796e4edc4d..e6258d4212 100644
--- a/src/st/nz0/st_common.c
+++ b/src/st/nz0/st_common.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "nz0.h"
 
 static s16 D_80181978[] = {
diff --git a/src/st/nz0/st_update.c b/src/st/nz0/st_update.c
index 8477b24783..ecc3e8bbf5 100644
--- a/src/st/nz0/st_update.c
+++ b/src/st/nz0/st_update.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <stage.h>
 
 static u16 UNK_Invincibility0[] = {
diff --git a/src/st/nz0/tile_data.c b/src/st/nz0/tile_data.c
index a64eb535bd..6ed019ead1 100644
--- a/src/st/nz0/tile_data.c
+++ b/src/st/nz0/tile_data.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <stage.h>
 
 #include "tilemap_16A5C.h"
diff --git a/src/st/play_sfx_positional.h b/src/st/play_sfx_positional.h
index 206b8f3414..84eae96032 100644
--- a/src/st/play_sfx_positional.h
+++ b/src/st/play_sfx_positional.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 void PlaySfxPositional(s16 sfxId) {
     s32 posX;
     s32 posY;
diff --git a/src/st/popup.h b/src/st/popup.h
index b7807ebc2e..84589d1fec 100644
--- a/src/st/popup.h
+++ b/src/st/popup.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <stage.h>
 
 #if defined(VERSION_US)
diff --git a/src/st/prevent_entity_from_respawning.h b/src/st/prevent_entity_from_respawning.h
index 9dc0f494d2..b245ce7493 100644
--- a/src/st/prevent_entity_from_respawning.h
+++ b/src/st/prevent_entity_from_respawning.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 void PreventEntityFromRespawning(Entity* entity) {
     if (entity->entityRoomIndex) {
         u16 index = entity->entityRoomIndex - 1 >> 5;
diff --git a/src/st/prim_helpers.h b/src/st/prim_helpers.h
index 51a6b9d5fe..34bfa33ad8 100644
--- a/src/st/prim_helpers.h
+++ b/src/st/prim_helpers.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "game.h"
 
 #if !defined(VERSION_PSP)
diff --git a/src/st/random.h b/src/st/random.h
index 3d1795d7f1..744c2c4407 100644
--- a/src/st/random.h
+++ b/src/st/random.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <game.h>
 
 s32 Random(void) {
diff --git a/src/st/ratan2.h b/src/st/ratan2.h
index cd2e5057b4..ea059b634b 100644
--- a/src/st/ratan2.h
+++ b/src/st/ratan2.h
@@ -1 +1,2 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 u16 Ratan2(s16 x, s16 y) { return ratan2(y, x); }
diff --git a/src/st/ratan2_shifted.h b/src/st/ratan2_shifted.h
index a29f41a3fb..ca5b28ee02 100644
--- a/src/st/ratan2_shifted.h
+++ b/src/st/ratan2_shifted.h
@@ -1 +1,2 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 u8 Ratan2Shifted(s16 x, s16 y) { return (ratan2(y, x) >> 4) + 0x40; }
diff --git a/src/st/replace_breakable_with_item_drop.h b/src/st/replace_breakable_with_item_drop.h
index ab0a8d4176..6d9fb54036 100644
--- a/src/st/replace_breakable_with_item_drop.h
+++ b/src/st/replace_breakable_with_item_drop.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 void ReplaceBreakableWithItemDrop(Entity* self) {
     u16 params;
 
diff --git a/src/st/rwrp/bss.c b/src/st/rwrp/bss.c
index 1bb650f9be..267f5dcd5e 100644
--- a/src/st/rwrp/bss.c
+++ b/src/st/rwrp/bss.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <common.h>
 
 STATIC_PAD_BSS(0xC68);
diff --git a/src/st/rwrp/d_1b8.c b/src/st/rwrp/d_1b8.c
index 3644c28dac..f6f4d9ce68 100644
--- a/src/st/rwrp/d_1b8.c
+++ b/src/st/rwrp/d_1b8.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "rwrp.h"
 #include "../st_private.h"
 
diff --git a/src/st/rwrp/e_init.c b/src/st/rwrp/e_init.c
index 87ca8dd352..af8c1bba2c 100644
--- a/src/st/rwrp/e_init.c
+++ b/src/st/rwrp/e_init.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "rwrp.h"
 #include "../st_private.h"
 
diff --git a/src/st/rwrp/e_misc.c b/src/st/rwrp/e_misc.c
index c098319c68..4680046a1f 100644
--- a/src/st/rwrp/e_misc.c
+++ b/src/st/rwrp/e_misc.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "rwrp.h"
 
 #include "../e_misc.h"
diff --git a/src/st/rwrp/header.c b/src/st/rwrp/header.c
index 9991dc8375..5c9ddc9416 100644
--- a/src/st/rwrp/header.c
+++ b/src/st/rwrp/header.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "rwrp.h"
 
 extern RoomHeader OVL_EXPORT(rooms)[];
diff --git a/src/st/rwrp/rwrp.h b/src/st/rwrp/rwrp.h
index a688ab70ea..dd99336b3a 100644
--- a/src/st/rwrp/rwrp.h
+++ b/src/st/rwrp/rwrp.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #ifndef RWRP_H
 #define RWRP_H
 
diff --git a/src/st/rwrp/tile_data.c b/src/st/rwrp/tile_data.c
index a98915f79c..13c117e7a1 100644
--- a/src/st/rwrp/tile_data.c
+++ b/src/st/rwrp/tile_data.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <stage.h>
 
 #include "tilemap_01FC8.h"
diff --git a/src/st/rwrp/warp.c b/src/st/rwrp/warp.c
index f3b658b65a..7ae0901a61 100644
--- a/src/st/rwrp/warp.c
+++ b/src/st/rwrp/warp.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "game.h"
 #include "rwrp.h"
 #include "common.h"
diff --git a/src/st/sel/2C048.c b/src/st/sel/2C048.c
index 19f26c5430..9613140aa9 100644
--- a/src/st/sel/2C048.c
+++ b/src/st/sel/2C048.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 /*
  * File: 2C048.c
  * Overlay: SEL
diff --git a/src/st/sel/33164.c b/src/st/sel/33164.c
index accb2030aa..6001ae171c 100644
--- a/src/st/sel/33164.c
+++ b/src/st/sel/33164.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "sel.h"
 
 s32 func_801B3164(void) {
diff --git a/src/st/sel/3410C.c b/src/st/sel/3410C.c
index 3be0685272..29497d4188 100644
--- a/src/st/sel/3410C.c
+++ b/src/st/sel/3410C.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "sel.h"
 #include "sfx.h"
 
diff --git a/src/st/sel/3585C.c b/src/st/sel/3585C.c
index 0ade8aa847..574ad29161 100644
--- a/src/st/sel/3585C.c
+++ b/src/st/sel/3585C.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "sel.h"
 
 void func_801B4B9C(Entity* entity, s16 step);
diff --git a/src/st/sel/3642C.c b/src/st/sel/3642C.c
index da39f62558..9bdae5e04f 100644
--- a/src/st/sel/3642C.c
+++ b/src/st/sel/3642C.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "sel.h"
 
 void func_801B642C(void) {
diff --git a/src/st/sel/CD54.c b/src/st/sel/CD54.c
index ebd075ca85..a47b2c990c 100644
--- a/src/st/sel/CD54.c
+++ b/src/st/sel/CD54.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 unsigned short D_8018CD54[48] = {
     0x0000, 0x0421, 0x0C63, 0x2D6B, 0x56B5, 0x7FFF, 0x2840, 0x38C4,
     0x59CC, 0x00EE, 0x01F4, 0x0F5F, 0x3FFF, 0x000A, 0x0010, 0x0016,
diff --git a/src/st/sel/banks.c b/src/st/sel/banks.c
index a49fee43ba..6f073bd962 100644
--- a/src/st/sel/banks.c
+++ b/src/st/sel/banks.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "game.h"
 
 static u8 D_801804E0[] = {
diff --git a/src/st/sel/bss.c b/src/st/sel/bss.c
index 061db6c1aa..3abb2a4392 100644
--- a/src/st/sel/bss.c
+++ b/src/st/sel/bss.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "common.h"
 
 u32 D_801BAEE4[9];
diff --git a/src/st/sel/config_us.c b/src/st/sel/config_us.c
index 052811ed1a..38a9d28199 100644
--- a/src/st/sel/config_us.c
+++ b/src/st/sel/config_us.c
@@ -1 +1,2 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../../config_us.h"
diff --git a/src/st/sel/lba_stage.c b/src/st/sel/lba_stage.c
index 03dcba60d1..6f0232cec3 100644
--- a/src/st/sel/lba_stage.c
+++ b/src/st/sel/lba_stage.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "game.h"
 
 // clang-format off
diff --git a/src/st/sel/save_mgr.c b/src/st/sel/save_mgr.c
index ac7c748fd0..d9c13c0b0c 100644
--- a/src/st/sel/save_mgr.c
+++ b/src/st/sel/save_mgr.c
@@ -1,2 +1,3 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "sel.h"
 #include "../../save_mgr.h"
diff --git a/src/st/sel/save_mgr_pre.c b/src/st/sel/save_mgr_pre.c
index b599f080db..f0eac22740 100644
--- a/src/st/sel/save_mgr_pre.c
+++ b/src/st/sel/save_mgr_pre.c
@@ -1,2 +1,3 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "sel.h"
 #include "../../save_mgr_pre.h"
diff --git a/src/st/sel/sel.h b/src/st/sel/sel.h
index b3a8343eaf..c57a06fc5b 100644
--- a/src/st/sel/sel.h
+++ b/src/st/sel/sel.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "stage.h"
 #include <psxsdk/romio.h>
 #include "memcard.h"
diff --git a/src/st/sel/stream.c b/src/st/sel/stream.c
index 74bd5ca762..90bb1f7d8c 100644
--- a/src/st/sel/stream.c
+++ b/src/st/sel/stream.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "sel.h"
 
 // Check if CD data is ready as long as its not related to reading the position
diff --git a/src/st/sel/stream_info.c b/src/st/sel/stream_info.c
index ab54c3624f..bbd4ccc774 100644
--- a/src/st/sel/stream_info.c
+++ b/src/st/sel/stream_info.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "sel.h"
 
 StreamInfo g_StreamInfo0 = {
diff --git a/src/st/set_entity_velocity_from_angle.h b/src/st/set_entity_velocity_from_angle.h
index 497f34842f..f23072c25a 100644
--- a/src/st/set_entity_velocity_from_angle.h
+++ b/src/st/set_entity_velocity_from_angle.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 void SetEntityVelocityFromAngle(s32 arg0, s16 arg1) {
     g_CurrentEntity->velocityX = GetSineScaled(arg0, arg1);
     g_CurrentEntity->velocityY = GetSineScaled(arg0 - 0x40, arg1);
diff --git a/src/st/set_step.h b/src/st/set_step.h
index 593dff5a40..4006c7cf52 100644
--- a/src/st/set_step.h
+++ b/src/st/set_step.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 void SetStep(u8 step) {
     g_CurrentEntity->step = step;
     g_CurrentEntity->step_s = 0;
diff --git a/src/st/set_sub_step.h b/src/st/set_sub_step.h
index ca0b785aaa..866c1a8699 100644
--- a/src/st/set_sub_step.h
+++ b/src/st/set_sub_step.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 void SetSubStep(u8 step_s) {
     g_CurrentEntity->step_s = step_s;
     g_CurrentEntity->animFrameIdx = 0;
diff --git a/src/st/st0/27D64.c b/src/st/st0/27D64.c
index 864d1f2cf7..b6912794a8 100644
--- a/src/st/st0/27D64.c
+++ b/src/st/st0/27D64.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "st0.h"
 #include "sfx.h"
 
diff --git a/src/st/st0/2A218.c b/src/st/st0/2A218.c
index 65d34b8aa3..11fce9c0a1 100644
--- a/src/st/st0/2A218.c
+++ b/src/st/st0/2A218.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "st0.h"
 
 void func_801AA218(s16 arg0) {
diff --git a/src/st/st0/2A8DC.c b/src/st/st0/2A8DC.c
index bfcf8e24d1..ec07ab7ab4 100644
--- a/src/st/st0/2A8DC.c
+++ b/src/st/st0/2A8DC.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 /*
  * Overlay: ST0
  * Entity: Secret Stairs
diff --git a/src/st/st0/2B0C8.c b/src/st/st0/2B0C8.c
index e9c2448bcf..14eb15dbea 100644
--- a/src/st/st0/2B0C8.c
+++ b/src/st/st0/2B0C8.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "st0.h"
 #include "sfx.h"
 
diff --git a/src/st/st0/2C564.c b/src/st/st0/2C564.c
index e914364358..ce46162518 100644
--- a/src/st/st0/2C564.c
+++ b/src/st/st0/2C564.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 /*
  * Overlay: ST0
  * Enemy: Dracula Boss
diff --git a/src/st/st0/2DAC8.c b/src/st/st0/2DAC8.c
index e5ba0a1bf1..25617d7c3b 100644
--- a/src/st/st0/2DAC8.c
+++ b/src/st/st0/2DAC8.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "st0.h"
 #include "sfx.h"
 
diff --git a/src/st/st0/30030.c b/src/st/st0/30030.c
index ee3fc310bd..2514aca1cf 100644
--- a/src/st/st0/30030.c
+++ b/src/st/st0/30030.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "st0.h"
 #include "disk.h"
 
diff --git a/src/st/st0/34908.c b/src/st/st0/34908.c
index 2a2e8cb677..201e66b8c2 100644
--- a/src/st/st0/34908.c
+++ b/src/st/st0/34908.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "st0.h"
 #include "sfx.h"
 
diff --git a/src/st/st0/37308.c b/src/st/st0/37308.c
index db30e3a838..5ae209603f 100644
--- a/src/st/st0/37308.c
+++ b/src/st/st0/37308.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "game.h"
 #include "st0.h"
 #include "sfx.h"
diff --git a/src/st/st0/3D8F0.c b/src/st/st0/3D8F0.c
index 7e1ba59463..a5a3454c2b 100644
--- a/src/st/st0/3D8F0.c
+++ b/src/st/st0/3D8F0.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "st0.h"
 
 typedef struct {
diff --git a/src/st/st0/bss.c b/src/st/st0/bss.c
index 64509d032c..f9745942a4 100644
--- a/src/st/st0/bss.c
+++ b/src/st/st0/bss.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <types.h>
 
 u16 D_801C00B0[768];
diff --git a/src/st/st0/collision.c b/src/st/st0/collision.c
index 28490822e3..86d5661397 100644
--- a/src/st/st0/collision.c
+++ b/src/st/st0/collision.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <stage.h>
 
 static u16 g_testCollEnemyLookup[] = {
diff --git a/src/st/st0/create_entity.c b/src/st/st0/create_entity.c
index 431ffa1e8b..59e76c3aee 100644
--- a/src/st/st0/create_entity.c
+++ b/src/st/st0/create_entity.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <types.h>
 
 u32 D_801BEB00[25];
diff --git a/src/st/st0/draculacutscene.c b/src/st/st0/draculacutscene.c
index fe905c1e11..aeae12b678 100644
--- a/src/st/st0/draculacutscene.c
+++ b/src/st/st0/draculacutscene.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 /*
  * Overlay: ST0
  * Description: Cutscene of Richter talking to Dracula
diff --git a/src/st/st0/e_collect.c b/src/st/st0/e_collect.c
index 6bc3943d90..c71bb57391 100644
--- a/src/st/st0/e_collect.c
+++ b/src/st/st0/e_collect.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "st0.h"
 
 #include "../e_collect.h"
diff --git a/src/st/st0/e_red_door.c b/src/st/st0/e_red_door.c
index cd9dc7a561..dd52a75451 100644
--- a/src/st/st0/e_red_door.c
+++ b/src/st/st0/e_red_door.c
@@ -1 +1,2 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../e_red_door.h"
diff --git a/src/st/st0/header.c b/src/st/st0/header.c
index a6326dc414..63734365ee 100644
--- a/src/st/st0/header.c
+++ b/src/st/st0/header.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "st0.h"
 
 extern RoomHeader OVL_EXPORT(rooms)[];
diff --git a/src/st/st0/prim_helpers.c b/src/st/st0/prim_helpers.c
index 96d47f7df3..bf72d43920 100644
--- a/src/st/st0/prim_helpers.c
+++ b/src/st/st0/prim_helpers.c
@@ -1,2 +1,3 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <game.h>
 #include "../prim_helpers.h"
diff --git a/src/st/st0/random.c b/src/st/st0/random.c
index 04cd68787f..198b5710bb 100644
--- a/src/st/st0/random.c
+++ b/src/st/st0/random.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <game.h>
 
 #include "../random.h"
diff --git a/src/st/st0/st0.h b/src/st/st0/st0.h
index 7d7fd85774..9ef3f183cb 100644
--- a/src/st/st0/st0.h
+++ b/src/st/st0/st0.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "stage.h"
 
 #undef STAGE
diff --git a/src/st/st0/tile_data.c b/src/st/st0/tile_data.c
index 61b0384157..7dc5b00b97 100644
--- a/src/st/st0/tile_data.c
+++ b/src/st/st0/tile_data.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <stage.h>
 
 #include "tilemap_1B2D0.h"
diff --git a/src/st/st0/update.c b/src/st/st0/update.c
index e447681b8d..ceeba506b8 100644
--- a/src/st/st0/update.c
+++ b/src/st/st0/update.c
@@ -1 +1,2 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../update.h"
diff --git a/src/st/st0/update_stage_entities.c b/src/st/st0/update_stage_entities.c
index 8886987cb8..283d509feb 100644
--- a/src/st/st0/update_stage_entities.c
+++ b/src/st/st0/update_stage_entities.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <stage.h>
 
 #include "../update_stage_entities.h"
diff --git a/src/st/st_private.h b/src/st/st_private.h
index 2388d786cd..3a313b673b 100644
--- a/src/st/st_private.h
+++ b/src/st/st_private.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #ifndef ST_PRIVATE_H
 #define ST_PRIVATE_H
 
diff --git a/src/st/unk_anim_func.h b/src/st/unk_anim_func.h
index 2c7f7c76ab..126dda9a50 100644
--- a/src/st/unk_anim_func.h
+++ b/src/st/unk_anim_func.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 u8 UnkAnimFunc(u8 frames[], Entity* self, u8 arg2) {
     u16 animFrameStart = self->animFrameIdx * 2;
     u8* var_s1 = &frames[animFrameStart];
diff --git a/src/st/unk_collision_func.h b/src/st/unk_collision_func.h
index b205354c67..a2234b35a0 100644
--- a/src/st/unk_collision_func.h
+++ b/src/st/unk_collision_func.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 s32 UnkCollisionFunc(u16* hitSensors, s16 sensorCount) {
     Collider collider;
     s16 i;
diff --git a/src/st/unk_collision_func2.h b/src/st/unk_collision_func2.h
index af647d9fdf..b0d21ef4bd 100644
--- a/src/st/unk_collision_func2.h
+++ b/src/st/unk_collision_func2.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 s32 UnkCollisionFunc2(s16* posX) {
     Collider collider;
     s16 temp2;
diff --git a/src/st/unk_collision_func3.h b/src/st/unk_collision_func3.h
index bf0fe837a0..06ee56766c 100644
--- a/src/st/unk_collision_func3.h
+++ b/src/st/unk_collision_func3.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 s32 UnkCollisionFunc3(u16* sensors) {
     Collider col;
     Collider colBack;
diff --git a/src/st/unk_collision_func4.h b/src/st/unk_collision_func4.h
index 268124a4ba..580b16977b 100644
--- a/src/st/unk_collision_func4.h
+++ b/src/st/unk_collision_func4.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 u8 UnkCollisionFunc4(s32 arg0) {
     Collider collider;
     u32 bits_67;
diff --git a/src/st/unk_collision_func5.h b/src/st/unk_collision_func5.h
index 40accc7d9b..f11bccbd46 100644
--- a/src/st/unk_collision_func5.h
+++ b/src/st/unk_collision_func5.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 bool UnkCollisionFunc5(Point16* unk) {
     Collider collider;
 
diff --git a/src/st/unk_entity_func0.h b/src/st/unk_entity_func0.h
index e570c229d0..3c7b2a5f6e 100644
--- a/src/st/unk_entity_func0.h
+++ b/src/st/unk_entity_func0.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 void UnkEntityFunc0(u16 slope, s16 speed) {
     g_CurrentEntity->velocityX = rcos(slope) * speed / 16;
     g_CurrentEntity->velocityY = rsin(slope) * speed / 16;
diff --git a/src/st/unk_recursive_primfunc_1.h b/src/st/unk_recursive_primfunc_1.h
index 58e76a83f6..a954b1b3ef 100644
--- a/src/st/unk_recursive_primfunc_1.h
+++ b/src/st/unk_recursive_primfunc_1.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 extern u16 g_UnkRecursPrimVecOrder[];
 
 // arg7 holds, in order:
diff --git a/src/st/unk_recursive_primfunc_2.h b/src/st/unk_recursive_primfunc_2.h
index dd1a7333a6..76fb5aac63 100644
--- a/src/st/unk_recursive_primfunc_2.h
+++ b/src/st/unk_recursive_primfunc_2.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 extern u16 g_UnkRecursPrim2Inds[];
 
 // arg3 holds, in order:
diff --git a/src/st/update.h b/src/st/update.h
index 7195b1cd81..5480c6e3ab 100644
--- a/src/st/update.h
+++ b/src/st/update.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <stage.h>
 
 extern u16 UNK_Invincibility0[];
diff --git a/src/st/update_room_position.h b/src/st/update_room_position.h
index 64f0331322..18e03faf41 100644
--- a/src/st/update_room_position.h
+++ b/src/st/update_room_position.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 /*
  * Creates any new entities that may need to be created
  * based on a change in the scroll delta.
diff --git a/src/st/update_stage_entities.h b/src/st/update_stage_entities.h
index 442c655cc3..a85f62e8ec 100644
--- a/src/st/update_stage_entities.h
+++ b/src/st/update_stage_entities.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <stage.h>
 
 extern u16 UNK_Invincibility0[];
diff --git a/src/st/wrp/blit_char.c b/src/st/wrp/blit_char.c
index dcd77c4c0e..4671969f21 100644
--- a/src/st/wrp/blit_char.c
+++ b/src/st/wrp/blit_char.c
@@ -1 +1,2 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../blit_char.h"
diff --git a/src/st/wrp/bss.c b/src/st/wrp/bss.c
index 89acec9f49..f84e43920d 100644
--- a/src/st/wrp/bss.c
+++ b/src/st/wrp/bss.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <common.h>
 
 u16 D_801997E8[0x600];
diff --git a/src/st/wrp/collision.c b/src/st/wrp/collision.c
index 075265617f..765a667bf0 100644
--- a/src/st/wrp/collision.c
+++ b/src/st/wrp/collision.c
@@ -1 +1,2 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../collision.h"
diff --git a/src/st/wrp/create_entity.c b/src/st/wrp/create_entity.c
index 10c09cbabf..9754da4b19 100644
--- a/src/st/wrp/create_entity.c
+++ b/src/st/wrp/create_entity.c
@@ -1 +1,2 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../create_entity.h"
diff --git a/src/st/wrp/d_1b8.c b/src/st/wrp/d_1b8.c
index 481da79e00..d9d3b4fce0 100644
--- a/src/st/wrp/d_1b8.c
+++ b/src/st/wrp/d_1b8.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "wrp.h"
 #include "../st_private.h"
 
diff --git a/src/st/wrp/d_608.c b/src/st/wrp/d_608.c
index 884130080a..17fb270b37 100644
--- a/src/st/wrp/d_608.c
+++ b/src/st/wrp/d_608.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <common.h>
 
 u32 D_80180608[] = {
diff --git a/src/st/wrp/e_breakable.c b/src/st/wrp/e_breakable.c
index 11f6edeef9..cd12105f3f 100644
--- a/src/st/wrp/e_breakable.c
+++ b/src/st/wrp/e_breakable.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "wrp.h"
 
 #include "../e_breakable.h"
diff --git a/src/st/wrp/e_collect.c b/src/st/wrp/e_collect.c
index f819390dbc..aa502d8c9f 100644
--- a/src/st/wrp/e_collect.c
+++ b/src/st/wrp/e_collect.c
@@ -1 +1,2 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../e_collect.h"
diff --git a/src/st/wrp/e_init.c b/src/st/wrp/e_init.c
index d1bda4170d..daeabcaceb 100644
--- a/src/st/wrp/e_init.c
+++ b/src/st/wrp/e_init.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "wrp.h"
 #include "../st_private.h"
 
diff --git a/src/st/wrp/e_misc.c b/src/st/wrp/e_misc.c
index 695fc1b162..7ecd1fe372 100644
--- a/src/st/wrp/e_misc.c
+++ b/src/st/wrp/e_misc.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "wrp.h"
 
 #define CASTLE_FLAG_BANK 0x000
diff --git a/src/st/wrp/e_particles.c b/src/st/wrp/e_particles.c
index 86161180c1..82e69d09db 100644
--- a/src/st/wrp/e_particles.c
+++ b/src/st/wrp/e_particles.c
@@ -1 +1,2 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../e_particles.h"
diff --git a/src/st/wrp/e_red_door.c b/src/st/wrp/e_red_door.c
index 060ec60d4a..dd58ffa6dc 100644
--- a/src/st/wrp/e_red_door.c
+++ b/src/st/wrp/e_red_door.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "wrp.h"
 
 #include "../e_red_door.h"
diff --git a/src/st/wrp/e_room_fg.c b/src/st/wrp/e_room_fg.c
index b20c1b8663..b4f033aeb8 100644
--- a/src/st/wrp/e_room_fg.c
+++ b/src/st/wrp/e_room_fg.c
@@ -1 +1,2 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../e_room_fg.h"
diff --git a/src/st/wrp/e_stage_name.c b/src/st/wrp/e_stage_name.c
index b98102b43c..9b0123cd80 100644
--- a/src/st/wrp/e_stage_name.c
+++ b/src/st/wrp/e_stage_name.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "wrp.h"
 
 #if defined(VERSION_US)
diff --git a/src/st/wrp/header.c b/src/st/wrp/header.c
index 55eda57ea4..d0ec25cfa2 100644
--- a/src/st/wrp/header.c
+++ b/src/st/wrp/header.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "wrp.h"
 
 void Update(void);
diff --git a/src/st/wrp/popup.c b/src/st/wrp/popup.c
index 8c6e9b6aab..619cd4b9f6 100644
--- a/src/st/wrp/popup.c
+++ b/src/st/wrp/popup.c
@@ -1 +1,2 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../popup.h"
diff --git a/src/st/wrp/prim_helpers.c b/src/st/wrp/prim_helpers.c
index fc7edccdac..5807f2c3bb 100644
--- a/src/st/wrp/prim_helpers.c
+++ b/src/st/wrp/prim_helpers.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <game.h>
 
 #include "../prim_helpers.h"
diff --git a/src/st/wrp/st_common.c b/src/st/wrp/st_common.c
index d1037d41d9..cfd7e512b2 100644
--- a/src/st/wrp/st_common.c
+++ b/src/st/wrp/st_common.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "wrp.h"
 
 #if !defined(VERSION_PSP)
diff --git a/src/st/wrp/st_debug.c b/src/st/wrp/st_debug.c
index 93d40724f2..590e6e97b7 100644
--- a/src/st/wrp/st_debug.c
+++ b/src/st/wrp/st_debug.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "wrp.h"
 
 static u8 g_EntityUnkId12Hitbox[] = {
diff --git a/src/st/wrp/st_update.c b/src/st/wrp/st_update.c
index 8477b24783..ecc3e8bbf5 100644
--- a/src/st/wrp/st_update.c
+++ b/src/st/wrp/st_update.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <stage.h>
 
 static u16 UNK_Invincibility0[] = {
diff --git a/src/st/wrp/tile_data.c b/src/st/wrp/tile_data.c
index 2bfeb9e453..d3da0ade04 100644
--- a/src/st/wrp/tile_data.c
+++ b/src/st/wrp/tile_data.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <stage.h>
 
 #if defined(VERSION_US)
diff --git a/src/st/wrp/warp.c b/src/st/wrp/warp.c
index 685bd5ae0b..fc0cd6e7dc 100644
--- a/src/st/wrp/warp.c
+++ b/src/st/wrp/warp.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "wrp.h"
 #include <sfx.h>
 
diff --git a/src/st/wrp/wrp.h b/src/st/wrp/wrp.h
index 4fbd1b1e05..56ae3e6dda 100644
--- a/src/st/wrp/wrp.h
+++ b/src/st/wrp/wrp.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <stage.h>
 
 #define OVL_EXPORT(x) WRP_##x
diff --git a/src/st/wrp_psp/blit_char.c b/src/st/wrp_psp/blit_char.c
index cc5ef3e94e..29bbc75672 100644
--- a/src/st/wrp_psp/blit_char.c
+++ b/src/st/wrp_psp/blit_char.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../wrp/wrp.h"
 
 // psp unique?
diff --git a/src/st/wrp_psp/bss.c b/src/st/wrp_psp/bss.c
index 5b3ca60973..144c5eb8a3 100644
--- a/src/st/wrp_psp/bss.c
+++ b/src/st/wrp_psp/bss.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <stage.h>
 
 // warp.c
diff --git a/src/st/wrp_psp/collision.c b/src/st/wrp_psp/collision.c
index 52e30a76f0..1f1f0c2f1a 100644
--- a/src/st/wrp_psp/collision.c
+++ b/src/st/wrp_psp/collision.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../wrp/wrp.h"
 
 INCLUDE_ASM("st/wrp_psp/psp/wrp_psp/collision", HitDetection);
diff --git a/src/st/wrp_psp/create_entity.c b/src/st/wrp_psp/create_entity.c
index 0f3c2e4c62..65f05d3875 100644
--- a/src/st/wrp_psp/create_entity.c
+++ b/src/st/wrp_psp/create_entity.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../wrp/wrp.h"
 
 static u16* g_LayoutObjHorizontal;
diff --git a/src/st/wrp_psp/e_collect.c b/src/st/wrp_psp/e_collect.c
index 92a25fce20..f36544e665 100644
--- a/src/st/wrp_psp/e_collect.c
+++ b/src/st/wrp_psp/e_collect.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../wrp/wrp.h"
 #include <sfx.h>
 
diff --git a/src/st/wrp_psp/e_misc.c b/src/st/wrp_psp/e_misc.c
index f1b5e0af4f..41f9e330d9 100644
--- a/src/st/wrp_psp/e_misc.c
+++ b/src/st/wrp_psp/e_misc.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../wrp/wrp.h"
 
 extern u16 D_80180608[];
diff --git a/src/st/wrp_psp/e_particles_data.c b/src/st/wrp_psp/e_particles_data.c
index 756f889cad..badd74b9d2 100644
--- a/src/st/wrp_psp/e_particles_data.c
+++ b/src/st/wrp_psp/e_particles_data.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../wrp/wrp.h"
 
 u16 g_ESoulStealOrbAngles[] = {
diff --git a/src/st/wrp_psp/e_particles_maria1.c b/src/st/wrp_psp/e_particles_maria1.c
index 16976be2d6..cbdae4bcc2 100644
--- a/src/st/wrp_psp/e_particles_maria1.c
+++ b/src/st/wrp_psp/e_particles_maria1.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../wrp/wrp.h"
 
 extern u16 g_ESoulStealOrbAngles[];
diff --git a/src/st/wrp_psp/e_particles_maria2.c b/src/st/wrp_psp/e_particles_maria2.c
index e44678c304..c5fa9cdb2c 100644
--- a/src/st/wrp_psp/e_particles_maria2.c
+++ b/src/st/wrp_psp/e_particles_maria2.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../wrp/wrp.h"
 
 extern u16 g_ESoulStealOrbAngles[];
diff --git a/src/st/wrp_psp/e_stage_name.c b/src/st/wrp_psp/e_stage_name.c
index b6aa1bb42c..dd1eaee9e9 100644
--- a/src/st/wrp_psp/e_stage_name.c
+++ b/src/st/wrp_psp/e_stage_name.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../wrp/wrp.h"
 
 INCLUDE_ASM("st/wrp_psp/psp/wrp_psp/e_stage_name", EntityStageNamePopup);
diff --git a/src/st/wrp_psp/prim_helpers.c b/src/st/wrp_psp/prim_helpers.c
index e8a33ed01b..8220c27b8c 100644
--- a/src/st/wrp_psp/prim_helpers.c
+++ b/src/st/wrp_psp/prim_helpers.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../wrp/wrp.h"
 
 #include "../prim_helpers.h"
diff --git a/src/st/wrp_psp/st_init_wrp.c b/src/st/wrp_psp/st_init_wrp.c
index f90341d98f..a9cf2c7b63 100644
--- a/src/st/wrp_psp/st_init_wrp.c
+++ b/src/st/wrp_psp/st_init_wrp.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../wrp/wrp.h"
 
 // entity table to allocate new entities
diff --git a/src/st/wrp_psp/stage_name_new.c b/src/st/wrp_psp/stage_name_new.c
index 1754fca7c2..98b2345130 100644
--- a/src/st/wrp_psp/stage_name_new.c
+++ b/src/st/wrp_psp/stage_name_new.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../wrp/wrp.h"
 
 void func_8928694(s32, void*);
diff --git a/src/st/wrp_psp/wrp_data_142E0.c b/src/st/wrp_psp/wrp_data_142E0.c
index 9223a9bdbe..9dccdedd36 100644
--- a/src/st/wrp_psp/wrp_data_142E0.c
+++ b/src/st/wrp_psp/wrp_data_142E0.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../wrp/wrp.h"
 
 void HitDetection(void);
diff --git a/src/st/wrp_psp/wrp_data_F010.c b/src/st/wrp_psp/wrp_data_F010.c
index 2e3d1008c4..0f74c226eb 100644
--- a/src/st/wrp_psp/wrp_data_F010.c
+++ b/src/st/wrp_psp/wrp_data_F010.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../wrp/wrp.h"
 
 u16 unk15_rot[] = {
diff --git a/src/st/wrp_psp/wrp_data_F740.c b/src/st/wrp_psp/wrp_data_F740.c
index 2caea65e76..2be1d513b8 100644
--- a/src/st/wrp_psp/wrp_data_F740.c
+++ b/src/st/wrp_psp/wrp_data_F740.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../wrp/wrp.h"
 
 extern void* D_801801B8[];
diff --git a/src/st/wrp_psp/wrp_data_F7B0.c b/src/st/wrp_psp/wrp_data_F7B0.c
index 26e1b39da3..8d710a3d08 100644
--- a/src/st/wrp_psp/wrp_data_F7B0.c
+++ b/src/st/wrp_psp/wrp_data_F7B0.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../wrp/wrp.h"
 
 u16 g_eRedDoorTiles[][8] = {
diff --git a/src/st/wrp_psp/wrp_data_F810.c b/src/st/wrp_psp/wrp_data_F810.c
index b14b7d447f..c31f451280 100644
--- a/src/st/wrp_psp/wrp_data_F810.c
+++ b/src/st/wrp_psp/wrp_data_F810.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "../wrp/wrp.h"
 
 u16 g_eBreakableInit[] = {
diff --git a/src/weapon/shared.h b/src/weapon/shared.h
index da54132d5d..70cfe5e5e7 100644
--- a/src/weapon/shared.h
+++ b/src/weapon/shared.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include "weapon_private.h"
 
 #include "../destroy_entity.h"
diff --git a/src/weapon/w_000.c b/src/weapon/w_000.c
index 5fd79f0658..b9a3e09018 100644
--- a/src/weapon/w_000.c
+++ b/src/weapon/w_000.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #0. Used by weapons:
 // Tyrfing, Namakura, Gladius, Scimitar, Cutlass, Saber, Falchion, Broadsword,
 // Bekatowa, Damascus sword, Hunter sword, Bastard sword, Talwar, Sword of
diff --git a/src/weapon/w_001.c b/src/weapon/w_001.c
index 8faddbeb12..e277a533c7 100644
--- a/src/weapon/w_001.c
+++ b/src/weapon/w_001.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #1. Used by weapons:
 // Knuckle duster, Jewel knuckles, Iron Fist, Fist of Tulkas, Unknown#186,
 // Unknown#187, Unknown#188
diff --git a/src/weapon/w_002.c b/src/weapon/w_002.c
index 02b3cead14..88e081a0c9 100644
--- a/src/weapon/w_002.c
+++ b/src/weapon/w_002.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #2. Used by weapons:
 // Mace
 
diff --git a/src/weapon/w_003.c b/src/weapon/w_003.c
index f2da263293..879186945d 100644
--- a/src/weapon/w_003.c
+++ b/src/weapon/w_003.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #3. Used by weapons:
 // Morningstar
 #include "weapon_private.h"
diff --git a/src/weapon/w_004.c b/src/weapon/w_004.c
index 7270dd91fc..f19509d806 100644
--- a/src/weapon/w_004.c
+++ b/src/weapon/w_004.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #4. Used by weapons:
 // Holy rod, Unknown#170
 #include "weapon_private.h"
diff --git a/src/weapon/w_005.c b/src/weapon/w_005.c
index a4fdfb40e7..80803ea386 100644
--- a/src/weapon/w_005.c
+++ b/src/weapon/w_005.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #5. Used by weapons:
 // Star flail, Unknown#171
 #include "weapon_private.h"
diff --git a/src/weapon/w_006.c b/src/weapon/w_006.c
index 8829059d14..417d095ef5 100644
--- a/src/weapon/w_006.c
+++ b/src/weapon/w_006.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #6. Used by weapons:
 // Moon rod, Unknown#172
 #define FUNC_04_VOID
diff --git a/src/weapon/w_007.c b/src/weapon/w_007.c
index 6daa4fc736..9e3c7003e0 100644
--- a/src/weapon/w_007.c
+++ b/src/weapon/w_007.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #7. Used by weapons:
 // Shield rod, Unknown#173
 #define FUNC_04_VOID
diff --git a/src/weapon/w_008.c b/src/weapon/w_008.c
index 1d05fcc00d..851b407055 100644
--- a/src/weapon/w_008.c
+++ b/src/weapon/w_008.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #8. Used by weapons:
 // Leather shield, Unknown#203
 #define SHIELDSPELL_S32
diff --git a/src/weapon/w_009.c b/src/weapon/w_009.c
index 0587c4d13d..d71df8b45a 100644
--- a/src/weapon/w_009.c
+++ b/src/weapon/w_009.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #9. Used by weapons:
 // Knight shield, Unknown#204
 #include "weapon_private.h"
diff --git a/src/weapon/w_010.c b/src/weapon/w_010.c
index 3c4fb4c7a2..10e94d7021 100644
--- a/src/weapon/w_010.c
+++ b/src/weapon/w_010.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #10. Used by weapons:
 // Iron shield, Unknown#205
 #include "weapon_private.h"
diff --git a/src/weapon/w_011.c b/src/weapon/w_011.c
index e03bccedca..697dd794e2 100644
--- a/src/weapon/w_011.c
+++ b/src/weapon/w_011.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #11. Used by weapons:
 // AxeLord shield, Unknown#206
 #include "weapon_private.h"
diff --git a/src/weapon/w_012.c b/src/weapon/w_012.c
index e3757b6a68..7119c9426c 100644
--- a/src/weapon/w_012.c
+++ b/src/weapon/w_012.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #12. Used by weapons:
 // Chakram, Vorpal blade, Crissaegrim
 #include "weapon_private.h"
diff --git a/src/weapon/w_013.c b/src/weapon/w_013.c
index bd7881c24c..f8c30341e2 100644
--- a/src/weapon/w_013.c
+++ b/src/weapon/w_013.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #13. Used by weapons:
 // Heaven sword, Unknown#202
 // #202 seems to be the special attack with two heaven swords.
diff --git a/src/weapon/w_014.c b/src/weapon/w_014.c
index 2343873529..e6ff82bf08 100644
--- a/src/weapon/w_014.c
+++ b/src/weapon/w_014.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #14. Used by weapons:
 // Runesword
 #include "weapon_private.h"
diff --git a/src/weapon/w_015.c b/src/weapon/w_015.c
index 84b42f53d7..6ae2c37771 100644
--- a/src/weapon/w_015.c
+++ b/src/weapon/w_015.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #15. Used by weapons:
 // Shuriken, Cross shuriken, Buffalo star, Flame star, TNT
 #include "weapon_private.h"
diff --git a/src/weapon/w_016.c b/src/weapon/w_016.c
index 9e656803f0..8a37bbf8ae 100644
--- a/src/weapon/w_016.c
+++ b/src/weapon/w_016.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #16. Used by weapons:
 // Bwaka knife, Boomerang, Javelin, Fire boomerang, Iron ball
 #include "weapon_private.h"
diff --git a/src/weapon/w_017.c b/src/weapon/w_017.c
index af13de1eb4..1f6add6023 100644
--- a/src/weapon/w_017.c
+++ b/src/weapon/w_017.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #17. Used by weapons:
 // Pentagram, Bat Pentagram
 #include "weapon_private.h"
diff --git a/src/weapon/w_018.c b/src/weapon/w_018.c
index 31e0f09fe9..c0585b15d9 100644
--- a/src/weapon/w_018.c
+++ b/src/weapon/w_018.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #18. Used by weapons:
 // Power of Sire
 #include "weapon_private.h"
diff --git a/src/weapon/w_019.c b/src/weapon/w_019.c
index f1eaee5c2a..0e97ed3afa 100644
--- a/src/weapon/w_019.c
+++ b/src/weapon/w_019.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #19. Used by weapons:
 // Neutron bomb
 #include "weapon_private.h"
diff --git a/src/weapon/w_020.c b/src/weapon/w_020.c
index 61295a7ef0..15988b8516 100644
--- a/src/weapon/w_020.c
+++ b/src/weapon/w_020.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #20. Used by weapons:
 // Karma Coin
 #include "weapon_private.h"
diff --git a/src/weapon/w_021.c b/src/weapon/w_021.c
index d1fdf79376..d0e31beef4 100644
--- a/src/weapon/w_021.c
+++ b/src/weapon/w_021.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #21. Used by weapons:
 // Orange, Apple, Banana, Grapes, Strawberry, Pineapple, Peanuts, Toadstool,
 // Shiitake, Cheesecake, Shortcake, Tart, Parfait, Pudding, Ice cream,
diff --git a/src/weapon/w_022.c b/src/weapon/w_022.c
index 906b17bd0a..d3b44aedd4 100644
--- a/src/weapon/w_022.c
+++ b/src/weapon/w_022.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #22. Used by weapons:
 // Magic Missile
 #include "weapon_private.h"
diff --git a/src/weapon/w_023.c b/src/weapon/w_023.c
index 76a26a4e91..e61a1c9d23 100644
--- a/src/weapon/w_023.c
+++ b/src/weapon/w_023.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #23. Used by weapons:
 // Herald shield, Unknown#207
 #include "weapon_private.h"
diff --git a/src/weapon/w_024.c b/src/weapon/w_024.c
index 3f8c783216..d86628c0b8 100644
--- a/src/weapon/w_024.c
+++ b/src/weapon/w_024.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #24. Used by weapons:
 // Dark shield, Unknown#208
 #include "weapon_private.h"
diff --git a/src/weapon/w_025.c b/src/weapon/w_025.c
index b1a11d086a..9fb8b7cd5f 100644
--- a/src/weapon/w_025.c
+++ b/src/weapon/w_025.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #25. Used by weapons:
 // Goddess shield, Unknown#209
 #include "weapon_private.h"
diff --git a/src/weapon/w_026.c b/src/weapon/w_026.c
index 0a2b253387..b55e21c1dd 100644
--- a/src/weapon/w_026.c
+++ b/src/weapon/w_026.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #26. Used by weapons:
 // Shaman shield, Unknown#210
 #include "weapon_private.h"
diff --git a/src/weapon/w_027.c b/src/weapon/w_027.c
index 507ed40401..971f1eb144 100644
--- a/src/weapon/w_027.c
+++ b/src/weapon/w_027.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #27. Used by weapons:
 // Medusa shield, Unknown#211
 #include "weapon_private.h"
diff --git a/src/weapon/w_028.c b/src/weapon/w_028.c
index 5dcad8daa5..311ed18232 100644
--- a/src/weapon/w_028.c
+++ b/src/weapon/w_028.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #28. Used by weapons:
 // Skull shield, Unknown#212
 #include "weapon_private.h"
diff --git a/src/weapon/w_029.c b/src/weapon/w_029.c
index 10be221bbc..ab0d166a6e 100644
--- a/src/weapon/w_029.c
+++ b/src/weapon/w_029.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #29. Used by weapons:
 // Fire shield, Unknown#213
 #include "weapon_private.h"
diff --git a/src/weapon/w_030.c b/src/weapon/w_030.c
index 4d017ed53f..162b236d24 100644
--- a/src/weapon/w_030.c
+++ b/src/weapon/w_030.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #30. Used by weapons:
 // Sword of Dawn, Unknown#177
 #include "weapon_private.h"
diff --git a/src/weapon/w_031.c b/src/weapon/w_031.c
index da5ebfbd68..2c2b5e995e 100644
--- a/src/weapon/w_031.c
+++ b/src/weapon/w_031.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #31. Used by weapons:
 // Basilard, Unknown#174
 #include "weapon_private.h"
diff --git a/src/weapon/w_032.c b/src/weapon/w_032.c
index 0bf3d6bb81..30939b8615 100644
--- a/src/weapon/w_032.c
+++ b/src/weapon/w_032.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #32. Used by weapons:
 // Combat knife, Unknown#175
 #include "weapon_private.h"
diff --git a/src/weapon/w_033.c b/src/weapon/w_033.c
index 4de6dc23d4..fa14c712a7 100644
--- a/src/weapon/w_033.c
+++ b/src/weapon/w_033.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #33. Used by weapons:
 // Nunchaku
 #include "weapon_private.h"
diff --git a/src/weapon/w_034.c b/src/weapon/w_034.c
index c4ba2d656c..55631ac380 100644
--- a/src/weapon/w_034.c
+++ b/src/weapon/w_034.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #34. Used by weapons:
 // Shotel, Unknown#176
 #include "weapon_private.h"
diff --git a/src/weapon/w_035.c b/src/weapon/w_035.c
index 8f36a5f897..efcbca3e90 100644
--- a/src/weapon/w_035.c
+++ b/src/weapon/w_035.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #35. Used by weapons:
 // Red Rust
 #include "weapon_private.h"
diff --git a/src/weapon/w_036.c b/src/weapon/w_036.c
index afbbd35bdb..9e14151a6d 100644
--- a/src/weapon/w_036.c
+++ b/src/weapon/w_036.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #36. Used by weapons:
 // Takemitsu
 #include "weapon_private.h"
diff --git a/src/weapon/w_037.c b/src/weapon/w_037.c
index 27be168d13..57a9617807 100644
--- a/src/weapon/w_037.c
+++ b/src/weapon/w_037.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #37. Used by weapons:
 // Short sword, Jewel sword, Stone sword, Unknown#198
 #include "weapon_private.h"
diff --git a/src/weapon/w_038.c b/src/weapon/w_038.c
index 4e73a12071..5f646b2cdd 100644
--- a/src/weapon/w_038.c
+++ b/src/weapon/w_038.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #38. Used by weapons:
 // Rapier, Unknown#191
 #include "weapon_private.h"
diff --git a/src/weapon/w_039.c b/src/weapon/w_039.c
index 3422bc4741..154669e853 100644
--- a/src/weapon/w_039.c
+++ b/src/weapon/w_039.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #39. Used by weapons:
 // Were Bane, Unknown#190
 #include "weapon_private.h"
diff --git a/src/weapon/w_040.c b/src/weapon/w_040.c
index 48028df1ef..1eac69d5fc 100644
--- a/src/weapon/w_040.c
+++ b/src/weapon/w_040.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #40. Used by weapons:
 // Monster vial 1
 #include "weapon_private.h"
diff --git a/src/weapon/w_041.c b/src/weapon/w_041.c
index 855d1a9cde..d7a2132469 100644
--- a/src/weapon/w_041.c
+++ b/src/weapon/w_041.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #41. Used by weapons:
 // Monster vial 2
 #include "weapon_private.h"
diff --git a/src/weapon/w_042.c b/src/weapon/w_042.c
index 6cf8d9025e..fbf6e51f5d 100644
--- a/src/weapon/w_042.c
+++ b/src/weapon/w_042.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #42. Used by weapons:
 // Monster vial 3
 #include "weapon_private.h"
diff --git a/src/weapon/w_043.c b/src/weapon/w_043.c
index fc90fbb42e..69200eaee0 100644
--- a/src/weapon/w_043.c
+++ b/src/weapon/w_043.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #43. Used by weapons:
 // Alucard sword, Sword Familiar, Alucart sword, Unknown#197
 #include "weapon_private.h"
diff --git a/src/weapon/w_044.c b/src/weapon/w_044.c
index 2e8dd50e58..63ed12921a 100644
--- a/src/weapon/w_044.c
+++ b/src/weapon/w_044.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #44. Used by weapons:
 // Heart Refresh
 #include "weapon_private.h"
diff --git a/src/weapon/w_045.c b/src/weapon/w_045.c
index 85bf1c9d1c..00b0b1c682 100644
--- a/src/weapon/w_045.c
+++ b/src/weapon/w_045.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #45. Used by weapons:
 // Unknown#216
 #define FUNC_0C_S32
diff --git a/src/weapon/w_046.c b/src/weapon/w_046.c
index 8fb695c7c4..913118124b 100644
--- a/src/weapon/w_046.c
+++ b/src/weapon/w_046.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #46. Used by weapons:
 // Holbein dagger, Blue knuckles
 #include "weapon_private.h"
diff --git a/src/weapon/w_047.c b/src/weapon/w_047.c
index c578998d40..21bcd1ba12 100644
--- a/src/weapon/w_047.c
+++ b/src/weapon/w_047.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #47. Used by weapons:
 // Dynamite
 #include "weapon_private.h"
diff --git a/src/weapon/w_048.c b/src/weapon/w_048.c
index fa4174f0d2..ccd8485413 100644
--- a/src/weapon/w_048.c
+++ b/src/weapon/w_048.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #48. Used by weapons:
 // Thunderbrand, Unknown#178
 #include "weapon_private.h"
diff --git a/src/weapon/w_049.c b/src/weapon/w_049.c
index cbd2449125..08d985dce6 100644
--- a/src/weapon/w_049.c
+++ b/src/weapon/w_049.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #49. Used by weapons:
 // Firebrand, Marsil, Unknown#179, Unknown#180
 #include "weapon_private.h"
diff --git a/src/weapon/w_050.c b/src/weapon/w_050.c
index 8b25c53681..d94e6dfaeb 100644
--- a/src/weapon/w_050.c
+++ b/src/weapon/w_050.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #50. Used by weapons:
 // Icebrand, Unknown#181, Unknown#199, Unknown#200, Unknown#201
 #include "weapon_private.h"
diff --git a/src/weapon/w_051.c b/src/weapon/w_051.c
index 34096faa65..e5d4861afb 100644
--- a/src/weapon/w_051.c
+++ b/src/weapon/w_051.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #51. Used by weapons:
 // Estoc, Claymore, Flamberge, Zwei hander, Obsidian sword, Great Sword,
 // Unknown#182, Unknown#183, Unknown#184, Unknown#185
diff --git a/src/weapon/w_052.c b/src/weapon/w_052.c
index e71bc25eb9..78d5cc9045 100644
--- a/src/weapon/w_052.c
+++ b/src/weapon/w_052.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #52. Used by weapons:
 // Alucard shield, Unknown#214
 #include "weapon_private.h"
diff --git a/src/weapon/w_053.c b/src/weapon/w_053.c
index bdba5cc605..16aad2183c 100644
--- a/src/weapon/w_053.c
+++ b/src/weapon/w_053.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #53. Used by weapons:
 // Katana, Osafune katana, Masamune, Yasutsuna, Unknown#189, Unknown#192,
 // Unknown#193, Unknown#194
diff --git a/src/weapon/w_053_056.h b/src/weapon/w_053_056.h
index bd86a93153..493ee63530 100644
--- a/src/weapon/w_053_056.h
+++ b/src/weapon/w_053_056.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #include <types.h>
 
 // A struct which describes variations of Weapon #53 and #56
diff --git a/src/weapon/w_054.c b/src/weapon/w_054.c
index b1f9f5c8dd..58ac75d242 100644
--- a/src/weapon/w_054.c
+++ b/src/weapon/w_054.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #54. Used by weapons:
 // Gurthang, Unknown#195
 #include "weapon_private.h"
diff --git a/src/weapon/w_055.c b/src/weapon/w_055.c
index e931364d0b..42b1b42319 100644
--- a/src/weapon/w_055.c
+++ b/src/weapon/w_055.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #55. Used by weapons:
 // Holy sword, Unknown#196
 #include "weapon_private.h"
diff --git a/src/weapon/w_056.c b/src/weapon/w_056.c
index add72f74df..82b0ed6715 100644
--- a/src/weapon/w_056.c
+++ b/src/weapon/w_056.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #56. Used by weapons:
 // Muramasa
 #include "weapon_private.h"
diff --git a/src/weapon/w_057.c b/src/weapon/w_057.c
index 3203909998..a64017bfe0 100644
--- a/src/weapon/w_057.c
+++ b/src/weapon/w_057.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #57. Used by weapons:
 // Mablung Sword
 #include "weapon_private.h"
diff --git a/src/weapon/w_058.c b/src/weapon/w_058.c
index 7aad6ea00b..1e3f6bef9e 100644
--- a/src/weapon/w_058.c
+++ b/src/weapon/w_058.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 // Weapon ID #58. Used by weapons:
 // Alucart shield, Unknown#215
 #include "weapon_private.h"
diff --git a/src/weapon/weapon_private.h b/src/weapon/weapon_private.h
index 0f5a31c841..ba996ef683 100644
--- a/src/weapon/weapon_private.h
+++ b/src/weapon/weapon_private.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: AGPL-3.0-only
 #ifndef WEAPON_PRIVATE_H
 #define WEAPON_PRIVATE_H
 
diff --git a/tools/lint-license.py b/tools/lint-license.py
index 057f8584e6..0e7c17bcae 100644
--- a/tools/lint-license.py
+++ b/tools/lint-license.py
@@ -19,7 +19,7 @@ def add_spdx_license(file_path, license):  # AGPL-3.0-only
 
 if __name__ == "__main__":
     if len(sys.argv) != 3:
-        print("usage: python add_spdx.py <file_name> <license>")
+        print("usage: python lint-license.py <file_name> <license>")
         sys.exit(1)
     file_names = [sys.argv[1]]
     if file_names[0] == "-":