diff --git a/engines/daikatana/env.json b/engines/daikatana/env.json
new file mode 100644
index 000000000..9778e0b11
--- /dev/null
+++ b/engines/daikatana/env.json
@@ -0,0 +1,5 @@
+{
+    "STEAM_APP_ID_LIST": [
+        "242980"
+    ]
+}
\ No newline at end of file
diff --git a/engines/daikatana/env.sh b/engines/daikatana/env.sh
deleted file mode 100755
index dcf3047da..000000000
--- a/engines/daikatana/env.sh
+++ /dev/null
@@ -1,3 +0,0 @@
-#!/bin/bash
-
-export STEAM_APP_ID_LIST="242980"
diff --git a/engines/dreamm/env.json b/engines/dreamm/env.json
new file mode 100644
index 000000000..2cc16e9fa
--- /dev/null
+++ b/engines/dreamm/env.json
@@ -0,0 +1,11 @@
+{
+    "STEAM_APP_ID_LIST": [
+        "default",
+        "730830",
+        "904540",
+        "557240",
+        "32310",
+        "32400"
+    ],
+    "COMMON_PACKAGE": true
+}
\ No newline at end of file
diff --git a/engines/dreamm/env.sh b/engines/dreamm/env.sh
deleted file mode 100755
index f30f9c8f7..000000000
--- a/engines/dreamm/env.sh
+++ /dev/null
@@ -1,4 +0,0 @@
-#!/bin/bash
-
-export STEAM_APP_ID_LIST="default 730830 904540 557240 32310 32400"
-export COMMON_PACKAGE="1"
diff --git a/engines/etlegacy/env.json b/engines/etlegacy/env.json
new file mode 100644
index 000000000..8c50e070c
--- /dev/null
+++ b/engines/etlegacy/env.json
@@ -0,0 +1,5 @@
+{
+    "STEAM_APP_ID_LIST": [
+        "1873030"
+    ]
+}
\ No newline at end of file
diff --git a/engines/etlegacy/env.sh b/engines/etlegacy/env.sh
deleted file mode 100755
index 6ee295584..000000000
--- a/engines/etlegacy/env.sh
+++ /dev/null
@@ -1,3 +0,0 @@
-#!/bin/bash
-
-export STEAM_APP_ID_LIST="1873030"
diff --git a/engines/etqw/env.json b/engines/etqw/env.json
new file mode 100644
index 000000000..3ac19de05
--- /dev/null
+++ b/engines/etqw/env.json
@@ -0,0 +1,9 @@
+{
+    "STEAM_APP_ID_LIST": [
+        "10050",
+        "10000"
+    ],
+    "LIBRARIES": [
+        "sdl12compat32"
+    ]
+}
\ No newline at end of file
diff --git a/engines/etqw/env.sh b/engines/etqw/env.sh
deleted file mode 100755
index d4bed3c85..000000000
--- a/engines/etqw/env.sh
+++ /dev/null
@@ -1,4 +0,0 @@
-#!/bin/bash
-
-export STEAM_APP_ID_LIST="10050 10000"
-export LIBRARIES="sdl12compat32"
diff --git a/engines/ftequakeworld/env.json b/engines/ftequakeworld/env.json
new file mode 100644
index 000000000..5b8c988bd
--- /dev/null
+++ b/engines/ftequakeworld/env.json
@@ -0,0 +1,10 @@
+{
+    "STEAM_APP_ID_LIST": [
+        "2310",
+        "2320",
+        "2200",
+        "9060"
+    ],
+    "LICENSE_PATH": "./LICENSE",
+    "COMMON_PACKAGE": true
+}
\ No newline at end of file
diff --git a/engines/ftequakeworld/env.sh b/engines/ftequakeworld/env.sh
deleted file mode 100755
index 043e3ddf2..000000000
--- a/engines/ftequakeworld/env.sh
+++ /dev/null
@@ -1,5 +0,0 @@
-#!/bin/bash
-
-export STEAM_APP_ID_LIST="2310 2320 2200 9060"
-export LICENSE_PATH="./LICENSE"
-export COMMON_PACKAGE="1"
diff --git a/engines/ja2-stracciatella/env.json b/engines/ja2-stracciatella/env.json
new file mode 100644
index 000000000..724fad7fd
--- /dev/null
+++ b/engines/ja2-stracciatella/env.json
@@ -0,0 +1,6 @@
+{
+    "STEAM_APP_ID_LIST": [
+        "215930",
+        "12370"
+    ]
+}
\ No newline at end of file
diff --git a/engines/ja2-stracciatella/env.sh b/engines/ja2-stracciatella/env.sh
deleted file mode 100755
index 6afdc71b4..000000000
--- a/engines/ja2-stracciatella/env.sh
+++ /dev/null
@@ -1,3 +0,0 @@
-#!/bin/bash
-
-export STEAM_APP_ID_LIST="215930 12370"
diff --git a/engines/openra/env.json b/engines/openra/env.json
new file mode 100644
index 000000000..a835a746b
--- /dev/null
+++ b/engines/openra/env.json
@@ -0,0 +1,5 @@
+{
+    "STEAM_APP_ID_LIST": [
+        "1213210"
+    ]
+}
\ No newline at end of file
diff --git a/engines/openra/env.sh b/engines/openra/env.sh
deleted file mode 100755
index 8fce15200..000000000
--- a/engines/openra/env.sh
+++ /dev/null
@@ -1,3 +0,0 @@
-#!/bin/bash
-
-export STEAM_APP_ID_LIST="1213210"
diff --git a/engines/prey2006/env.json b/engines/prey2006/env.json
new file mode 100644
index 000000000..cca2ceda7
--- /dev/null
+++ b/engines/prey2006/env.json
@@ -0,0 +1,8 @@
+{
+    "STEAM_APP_ID_LIST": [
+        "3970"
+    ],
+    "LIBRARIES": [
+        "sdl12compat32"
+    ]
+}
\ No newline at end of file
diff --git a/engines/prey2006/env.sh b/engines/prey2006/env.sh
deleted file mode 100755
index f13770201..000000000
--- a/engines/prey2006/env.sh
+++ /dev/null
@@ -1,4 +0,0 @@
-#!/bin/bash
-
-export STEAM_APP_ID_LIST="3970"
-export LIBRARIES="sdl12compat32"
diff --git a/engines/quake4/env.json b/engines/quake4/env.json
new file mode 100644
index 000000000..229924948
--- /dev/null
+++ b/engines/quake4/env.json
@@ -0,0 +1,8 @@
+{
+    "STEAM_APP_ID_LIST": [
+        "2210"
+    ],
+    "LIBRARIES": [
+        "sdl12compat32"
+    ]
+}
\ No newline at end of file
diff --git a/engines/quake4/env.sh b/engines/quake4/env.sh
deleted file mode 100755
index bf6eed502..000000000
--- a/engines/quake4/env.sh
+++ /dev/null
@@ -1,4 +0,0 @@
-#!/bin/bash
-
-export STEAM_APP_ID_LIST="2210"
-export LIBRARIES="sdl12compat32"
diff --git a/engines/reminiscence/env.json b/engines/reminiscence/env.json
new file mode 100644
index 000000000..94a5d9f14
--- /dev/null
+++ b/engines/reminiscence/env.json
@@ -0,0 +1,9 @@
+{
+    "STEAM_APP_ID_LIST": [
+        "961620"
+    ],
+    "LICENSE_PATH": "./REminiscence/LICENSE",
+    "LIBRARIES": [
+        "tremor"
+    ]
+}
\ No newline at end of file
diff --git a/engines/reminiscence/env.sh b/engines/reminiscence/env.sh
deleted file mode 100755
index 60619b27f..000000000
--- a/engines/reminiscence/env.sh
+++ /dev/null
@@ -1,5 +0,0 @@
-#!/bin/bash
-
-export STEAM_APP_ID_LIST="961620"
-export LICENSE_PATH="./REminiscence/LICENSE"
-export LIBRARIES="tremor"
diff --git a/engines/renpy/env.json b/engines/renpy/env.json
new file mode 100644
index 000000000..ad1be2054
--- /dev/null
+++ b/engines/renpy/env.json
@@ -0,0 +1,9 @@
+{
+    "STEAM_APP_ID_LIST": [
+        "default",
+        "698780",
+        "782340",
+        "2336180"
+    ],
+    "COMMON_PACKAGE": true
+}
\ No newline at end of file
diff --git a/engines/renpy/env.sh b/engines/renpy/env.sh
deleted file mode 100755
index 77a054d4a..000000000
--- a/engines/renpy/env.sh
+++ /dev/null
@@ -1,4 +0,0 @@
-#!/bin/bash
-
-export STEAM_APP_ID_LIST="default 698780 782340 2336180"
-export COMMON_PACKAGE="1"
diff --git a/engines/retroarch/env.json b/engines/retroarch/env.json
new file mode 100644
index 000000000..3e998fd38
--- /dev/null
+++ b/engines/retroarch/env.json
@@ -0,0 +1,7 @@
+{
+    "STEAM_APP_ID_LIST": [
+        "default",
+        "371180"
+    ],
+    "COMMON_PACKAGE": true
+}
\ No newline at end of file
diff --git a/engines/retroarch/env.sh b/engines/retroarch/env.sh
deleted file mode 100755
index b4748b400..000000000
--- a/engines/retroarch/env.sh
+++ /dev/null
@@ -1,4 +0,0 @@
-#!/bin/bash
-
-export STEAM_APP_ID_LIST="default 371180"
-export COMMON_PACKAGE="1"
diff --git a/engines/runelite/env.json b/engines/runelite/env.json
new file mode 100644
index 000000000..b1b2b7c5e
--- /dev/null
+++ b/engines/runelite/env.json
@@ -0,0 +1,5 @@
+{
+    "STEAM_APP_ID_LIST": [
+        "1343370"
+    ]
+}
\ No newline at end of file
diff --git a/engines/runelite/env.sh b/engines/runelite/env.sh
deleted file mode 100755
index ff81264a6..000000000
--- a/engines/runelite/env.sh
+++ /dev/null
@@ -1,3 +0,0 @@
-#!/bin/bash
-
-export STEAM_APP_ID_LIST="1343370"
diff --git a/engines/runescape/env.json b/engines/runescape/env.json
new file mode 100644
index 000000000..0480cb840
--- /dev/null
+++ b/engines/runescape/env.json
@@ -0,0 +1,5 @@
+{
+    "STEAM_APP_ID_LIST": [
+        "1343400"
+    ]
+}
\ No newline at end of file
diff --git a/engines/runescape/env.sh b/engines/runescape/env.sh
deleted file mode 100755
index 20cf478ed..000000000
--- a/engines/runescape/env.sh
+++ /dev/null
@@ -1,3 +0,0 @@
-#!/bin/bash
-
-export STEAM_APP_ID_LIST="1343400"
diff --git a/engines/rvgl/env.json b/engines/rvgl/env.json
new file mode 100644
index 000000000..b892a46ea
--- /dev/null
+++ b/engines/rvgl/env.json
@@ -0,0 +1,5 @@
+{
+    "STEAM_APP_ID_LIST": [
+        "287310"
+    ]
+}
\ No newline at end of file
diff --git a/engines/rvgl/env.sh b/engines/rvgl/env.sh
deleted file mode 100755
index 81f357ac0..000000000
--- a/engines/rvgl/env.sh
+++ /dev/null
@@ -1,3 +0,0 @@
-#!/bin/bash
-
-export STEAM_APP_ID_LIST="287310"
diff --git a/engines/unreal-gold-64/env.json b/engines/unreal-gold-64/env.json
new file mode 100644
index 000000000..6b22e36f3
--- /dev/null
+++ b/engines/unreal-gold-64/env.json
@@ -0,0 +1,8 @@
+{
+    "STEAM_APP_ID_LIST": [
+        "13250"
+    ],
+    "LIBRARIES": [
+        "libxmp"
+    ]
+}
\ No newline at end of file
diff --git a/engines/unreal-gold-64/env.sh b/engines/unreal-gold-64/env.sh
deleted file mode 100755
index 644d4b5bb..000000000
--- a/engines/unreal-gold-64/env.sh
+++ /dev/null
@@ -1,4 +0,0 @@
-#!/bin/bash
-
-export STEAM_APP_ID_LIST="13250"
-export LIBRARIES="libxmp"
diff --git a/engines/unreal-gold/env.json b/engines/unreal-gold/env.json
new file mode 100644
index 000000000..9fbabd5bc
--- /dev/null
+++ b/engines/unreal-gold/env.json
@@ -0,0 +1,8 @@
+{
+    "STEAM_APP_ID_LIST": [
+        "13250"
+    ],
+    "LIBRARIES": [
+        "libxmp32"
+    ]
+}
\ No newline at end of file
diff --git a/engines/unreal-gold/env.sh b/engines/unreal-gold/env.sh
deleted file mode 100755
index 279bea29c..000000000
--- a/engines/unreal-gold/env.sh
+++ /dev/null
@@ -1,4 +0,0 @@
-#!/bin/bash
-
-export STEAM_APP_ID_LIST="13250"
-export LIBRARIES="libxmp32"
diff --git a/engines/ut2004/env.json b/engines/ut2004/env.json
new file mode 100644
index 000000000..291b45d47
--- /dev/null
+++ b/engines/ut2004/env.json
@@ -0,0 +1,12 @@
+{
+    "STEAM_APP_ID_LIST": [
+        "13230"
+    ],
+    "ADDITIONAL_LICENSES": [
+        "./openal/COPYING",
+        "./gcc-3.3.6/COPYING"
+    ],
+    "LIBRARIES": [
+        "sdl12compat"
+    ]
+}
\ No newline at end of file
diff --git a/engines/ut2004/env.sh b/engines/ut2004/env.sh
deleted file mode 100755
index 6b45a30bc..000000000
--- a/engines/ut2004/env.sh
+++ /dev/null
@@ -1,5 +0,0 @@
-#!/bin/bash
-
-export STEAM_APP_ID_LIST="13230"
-export ADDITIONAL_LICENSES="./openal/COPYING ./gcc-3.3.6/COPYING"
-export LIBRARIES="sdl12compat"
diff --git a/engines/ut99/env.json b/engines/ut99/env.json
new file mode 100644
index 000000000..4b7f707a8
--- /dev/null
+++ b/engines/ut99/env.json
@@ -0,0 +1,5 @@
+{
+    "STEAM_APP_ID_LIST": [
+        "13240"
+    ]
+}
\ No newline at end of file
diff --git a/engines/ut99/env.sh b/engines/ut99/env.sh
deleted file mode 100755
index d41a15752..000000000
--- a/engines/ut99/env.sh
+++ /dev/null
@@ -1,3 +0,0 @@
-#!/bin/bash
-
-export STEAM_APP_ID_LIST="13240"