diff --git a/assets/skin/mino_interior.lua b/assets/skin/mino_interior.lua
index 84e6b64d..45861411 100644
--- a/assets/skin/mino_interior.lua
+++ b/assets/skin/mino_interior.lua
@@ -1,18 +1,30 @@
 --[[
-    Base on mino_simp:
+    Base on mino_template:
+    Remove HeightLines
+    Remove DelayIndicator
+    Simple open ceiling
     Simple grid
     Low precision timer
+    Static starting counter
 ]]
 local gc=love.graphics
 local gc_setColor=gc.setColor
 local gc_draw,gc_rectangle=gc.draw,gc.rectangle
 local gc_printf=gc.printf
+local gc_setLineWidth=gc.setLineWidth
+local gc_line=gc.line
 
 local COLOR=COLOR
 
 ---@type Techmino.skin.mino
 local S={}
-S.base='mino_simp'
+S.base='mino_template'
+
+function S.drawFieldBorder()
+    gc_setLineWidth(2)
+    gc_setColor(1,1,1)
+    gc_line(-201,-401,-201,401,201,401,201,-401)
+end
 
 local gridMark=GC.load{40,40,
     {'setCL',1,1,1,.26},
@@ -30,10 +42,21 @@ function S.drawFieldBackground(fieldW)
     end end
 end
 
+S.drawHeightLines=NULL
+S.drawDasIndicator=NULL
+S.drawDelayIndicator=NULL
+S.drawLockDelayIndicator=NULL
+
 function S.drawTime(time)
     gc_setColor(COLOR.dL)
     FONT.set(30,'number')
     gc_printf(("%.1f"):format(time/1000),-210-260,380,260,'right')
 end
 
+function S.drawStartingCounter(readyDelay)
+    FONT.set(100)
+    gc_setColor(COLOR.L)
+    GC.mStr(math.floor((readyDelay-S.getTime())/1000)+1,0,-70)
+end
+
 return S
diff --git a/assets/skin/mino_simp.lua b/assets/skin/mino_simp.lua
deleted file mode 100644
index 6121a719..00000000
--- a/assets/skin/mino_simp.lua
+++ /dev/null
@@ -1,41 +0,0 @@
---[[
-    Base on mino_template:
-    Remove HeightLines
-    Remove DelayIndicator
-    Static starting counter
-]]
-local gc=love.graphics
-local gc_setColor,gc_setLineWidth=gc.setColor,gc.setLineWidth
-local gc_line=gc.line
-
-local COLOR=COLOR
-
----@type Techmino.skin.mino
-local S={}
-S.base='mino_template'
-
-function S.drawFieldBorder()
-    gc_setLineWidth(2)
-    gc_setColor(1,1,1)
-    gc_line(-201,-401,-201,401,201,401,201,-401)
-end
-
-function S.drawHeightLines(fieldW,maxSpawnH,spawnH,lockoutH,deathH,voidH)
-end
-
-function S.drawDasIndicator(dir,charge,dasMax,arrMax)
-end
-
-function S.drawDelayIndicator(color,value)
-end
-
-function S.drawLockDelayIndicator(freshCondition,freshChance)
-end
-
-function S.drawStartingCounter(readyDelay)
-    FONT.set(100)
-    gc_setColor(COLOR.L)
-    GC.mStr(math.floor((readyDelay-S.getTime())/1000)+1,0,-70)
-end
-
-return S
diff --git a/main.lua b/main.lua
index 89fb67c7..663c9070 100644
--- a/main.lua
+++ b/main.lua
@@ -341,7 +341,6 @@ end
 for _,v in next,{
     'mino_template', -- Shouldn't be used
     'mino_plastic',
-    'mino_simp',
     'mino_interior',
 
     'puyo_template', -- Shouldn't be used