diff --git a/media/SFX/drop_cancel.ogg b/media/SFX/drop_cancel.ogg
new file mode 100644
index 00000000..baede2d9
Binary files /dev/null and b/media/SFX/drop_cancel.ogg differ
diff --git a/parts/gametoolfunc.lua b/parts/gametoolfunc.lua
index f59fb521..2f32956d 100644
--- a/parts/gametoolfunc.lua
+++ b/parts/gametoolfunc.lua
@@ -377,7 +377,7 @@ end
 do--function dumpBasicConfig()
 	local gameSetting={
 		--Tuning
-		'das','arr','dascut','sddas','sdarr',
+		'das','arr','dascut','dropcut','sddas','sdarr',
 		'ihs','irs','ims','RS','swap',
 
 		--System
diff --git a/parts/globalTables.lua b/parts/globalTables.lua
index 2b4312a0..02de57f8 100644
--- a/parts/globalTables.lua
+++ b/parts/globalTables.lua
@@ -286,7 +286,8 @@ ROOMENV={
 }
 SETTING={--Settings
 	--Tuning
-	das=10,arr=2,dascut=0,
+	das=10,arr=2,
+	dascut=0,dropcut=0,
 	sddas=0,sdarr=2,
 	ihs=true,irs=true,ims=true,
 	RS='TRS',
diff --git a/parts/language/lang_en.lua b/parts/language/lang_en.lua
index 384209f4..b21bdd2a 100644
--- a/parts/language/lang_en.lua
+++ b/parts/language/lang_en.lua
@@ -367,7 +367,9 @@ return{
 			title="Control Settings",
 			preview="Preview",
 
-			das="DAS",arr="ARR",dascut="DAS cut",
+			das="DAS",arr="ARR",
+			dascut="DAS cut",
+			dropcut="Auto-lock cut",
 			sddas="Soft Drop DAS",sdarr="Soft Drop ARR",
 			ihs="Initial Hold",
 			irs="Initial Rotation",
diff --git a/parts/language/lang_es.lua b/parts/language/lang_es.lua
index 61e301e6..65df9294 100644
--- a/parts/language/lang_es.lua
+++ b/parts/language/lang_es.lua
@@ -339,7 +339,9 @@ return{
 			title="Ajustes de Controles",
 			preview="Ejemplo",
 
-			das="DAS",arr="ARR",dascut="Intrrp. de DAS",
+			das="DAS",arr="ARR",
+			dascut="Intrrp. de DAS",
+			-- dropcut="Auto-lock cut",
 			sddas="DAS de C. Ráp.",sdarr="ARR de C. Rápida",
 			ihs="Resv. Inicial",
 			irs="Rot. Inicial",
diff --git a/parts/language/lang_fr.lua b/parts/language/lang_fr.lua
index 5c92d2f8..fdb958d8 100644
--- a/parts/language/lang_fr.lua
+++ b/parts/language/lang_fr.lua
@@ -338,7 +338,9 @@ return{
 			title="Paramètres de contrôle",
 			preview="Aperçu",
 
-			das="DAS",arr="ARR",dascut="DAS cut",
+			das="DAS",arr="ARR",
+			dascut="DAS cut",
+			-- dropcut="Auto-lock cut",
 			sddas="DAS de chute rapide",sdarr="ARR de chute rapide",
 			ihs="Réserve Initiale",
 			irs="Rotation Initiale",
diff --git a/parts/language/lang_pt.lua b/parts/language/lang_pt.lua
index 3bc5deba..7e7162eb 100644
--- a/parts/language/lang_pt.lua
+++ b/parts/language/lang_pt.lua
@@ -366,7 +366,9 @@ return{
 			title="Config. controles",
 			preview="Preview",
 
-			das="DAS",arr="ARR",dascut="DAS cut",
+			das="DAS",arr="ARR",
+			dascut="DAS cut",
+			-- dropcut="Auto-lock cut",
 			sddas="Soft Drop DAS",sdarr="Soft Drop ARR",
 			ihs="Segurar Inicial",
 			irs="Rotação Inicial",
diff --git a/parts/language/lang_symbol.lua b/parts/language/lang_symbol.lua
index e0ea0951..eab8c43f 100644
--- a/parts/language/lang_symbol.lua
+++ b/parts/language/lang_symbol.lua
@@ -193,7 +193,9 @@ return{
 			title="[~~]",
 			preview="?:",
 
-			das="x---x x x",arr="x   x-x-x",dascut="x x ↓___x x",
+			das="x---x x x",arr="x   x-x-x",
+			dascut="x x ↓___x x",
+			dropcut="↓_ !↓↓x",
 			sddas="↓---↓ ↓ ↓",sdarr="↓   ↓-↓-↓",
 			ihs="![ ]",
 			irs="!''",
diff --git a/parts/language/lang_zh.lua b/parts/language/lang_zh.lua
index 237da16a..f047300f 100644
--- a/parts/language/lang_zh.lua
+++ b/parts/language/lang_zh.lua
@@ -366,7 +366,9 @@ return{
 			title="控制设置",
 			preview="预览",
 
-			das="DAS",arr="ARR",dascut="DAS打断",
+			das="DAS",arr="ARR",
+			dascut="DAS打断",
+			dropcut="误硬降打断",
 			sddas="软降DAS",sdarr="软降ARR",
 			ihs="提前Hold",
 			irs="提前旋转",
diff --git a/parts/player/gameEnv0.lua b/parts/player/gameEnv0.lua
index 4b6d5729..3eb8fc19 100644
--- a/parts/player/gameEnv0.lua
+++ b/parts/player/gameEnv0.lua
@@ -1,6 +1,6 @@
 return{
 	das=10,arr=2,
-	dascut=0,
+	dascut=0,dropcut=0,
 	sddas=2,sdarr=2,
 	ihs=true,irs=true,ims=true,
 	swap=true,
diff --git a/parts/player/init.lua b/parts/player/init.lua
index 4d862a9b..c376c0f4 100644
--- a/parts/player/init.lua
+++ b/parts/player/init.lua
@@ -197,6 +197,9 @@ local function newEmptyPlayer(id,mini)
 	P.lastPiece={
 		id=0,name=0,--block id/name
 
+		frame=-1e99,--lock time
+		autoLock=true,--if lock with gravity
+
 		finePts=0,--finesse Points
 
 		row=0,dig=0,--lines/garbage cleared
diff --git a/parts/player/player.lua b/parts/player/player.lua
index 288cc9b0..f6fe883f 100644
--- a/parts/player/player.lua
+++ b/parts/player/player.lua
@@ -956,7 +956,7 @@ do--Player.drop(self)--Place piece
 		end
 	end
 
-	function Player:drop()
+	function Player:drop(autoLock)
 		local _
 		local CHN=VOC.getFreeChannel()
 		self.dropTime[11]=ins(self.dropTime,1,self.frameRun)--Update speed dial
@@ -975,6 +975,7 @@ do--Player.drop(self)--Place piece
 		local dospin,mini=0
 
 		piece.id,piece.name=C.id,C.name
+		piece.frame,piece.autoLock=self.frameRun,autoLock
 		self.waiting=ENV.wait
 
 		--Tri-corner spin check
@@ -1858,31 +1859,36 @@ function Player:act_rot180()
 	end
 end
 function Player:act_hardDrop()
+	local ENV=self.gameEnv
 	if self.keyPressing[9]then
-		if self.gameEnv.swap then
+		if ENV.swap then
 			self:changeAtkMode(3)
 		end
 		self.keyPressing[6]=false
 	elseif self.control and self.waiting==-1 and self.cur then
-		if self.curY>self.ghoY then
-			local CB=self.cur.bk
-			if self.gameEnv.dropFX and self.gameEnv.block and self.curY-self.ghoY-#CB>-1 then
-				self:createDropFX(self.curX,self.curY-1,#CB[1],self.curY-self.ghoY-#CB+1)
+		if self.lastPiece.autoLock and self.frameRun-self.lastPiece.frame<ENV.dropcut then
+			SFX.play('drop_cancel')
+		else
+			if self.curY>self.ghoY then
+				local CB=self.cur.bk
+				if ENV.dropFX and ENV.block and self.curY-self.ghoY-#CB>-1 then
+					self:createDropFX(self.curX,self.curY-1,#CB[1],self.curY-self.ghoY-#CB+1)
+				end
+				self.curY=self.ghoY
+				self.spinLast=false
+				if self.sound then
+					SFX.play('drop',nil,self:getCenterX()*.15)
+					VIB(1)
+				end
 			end
-			self.curY=self.ghoY
-			self.spinLast=false
-			if self.sound then
-				SFX.play('drop',nil,self:getCenterX()*.15)
-				VIB(1)
+			if ENV.shakeFX then
+				self.fieldOff.vy=ENV.shakeFX*.6
+				self.fieldOff.va=self.fieldOff.va+self:getCenterX()*ENV.shakeFX*6e-4
 			end
+			self.lockDelay=-1
+			self:drop(false)
+			self.keyPressing[6]=false
 		end
-		if self.gameEnv.shakeFX then
-			self.fieldOff.vy=self.gameEnv.shakeFX*.6
-			self.fieldOff.va=self.fieldOff.va+self:getCenterX()*self.gameEnv.shakeFX*6e-4
-		end
-		self.lockDelay=-1
-		self:drop()
-		self.keyPressing[6]=false
 	end
 end
 function Player:act_softDrop()
diff --git a/parts/player/update.lua b/parts/player/update.lua
index 8fad1a8d..8a26fa9b 100644
--- a/parts/player/update.lua
+++ b/parts/player/update.lua
@@ -363,7 +363,7 @@ function update.alive(P,dt)
 				if P.lockDelay>=0 then
 					goto THROW_stop
 				end
-				P:drop()
+				P:drop(true)
 				if P.AI_mode=='CC'and P.AI_bot then
 					CC.updateField(P)
 				end
diff --git a/parts/scenes/setting_control.lua b/parts/scenes/setting_control.lua
index 4bc885ad..78f59972 100644
--- a/parts/scenes/setting_control.lua
+++ b/parts/scenes/setting_control.lua
@@ -51,26 +51,28 @@ function scene.update()
 end
 
 function scene.draw()
+	gc.translate(550,600)
+
 	--Testing grid line
 	gc.setLineWidth(4)
 	gc.setColor(1,1,1,.4)
-	gc.line(550,540,950,540)
-	gc.line(550,580,950,580)
-	gc.line(550,620,950,620)
-	for x=590,910,40 do
-		gc.line(x,530,x,630)
+	gc.line(0,0,400,0)
+	gc.line(0,40,400,40)
+	gc.line(0,80,400,80)
+	for x=40,360,40 do
+		gc.line(x,-10,x,90)
 	end
 	gc.setColor(1,1,1)
-	gc.line(550,530,550,630)
-	gc.line(950,530,950,630)
+	gc.line(0,-10,0,90)
+	gc.line(400,-10,400,90)
 
 	--O mino animation
 	local O=SKIN.curText[SETTING.skin[6]]
-	local x=550+40*pos
-	gc.draw(O,x,540,nil,40/30)
-	gc.draw(O,x,580,nil,40/30)
-	gc.draw(O,x+40,540,nil,40/30)
-	gc.draw(O,x+40,580,nil,40/30)
+	gc.draw(O,40*pos,0,nil,40/30)
+	gc.draw(O,40*pos,40,nil,40/30)
+	gc.draw(O,40*pos+40,0,nil,40/30)
+	gc.draw(O,40*pos+40,40,nil,40/30)
+	gc.translate(-550,-600)
 end
 
 local function sliderShow(S)
@@ -79,17 +81,18 @@ local function sliderShow(S)
 end
 scene.widgetList={
 	WIDGET.newText{name="title",	x=80,	y=50,font=70,align='L'},
-	WIDGET.newText{name="preview",	x=520,	y=540,font=40,align='R'},
+	WIDGET.newText{name="preview",	x=520,	y=610,font=40,align='R'},
 
 	WIDGET.newSlider{name="das",	x=250,	y=190,w=600,unit=20,disp=SETval("das"),	show=sliderShow,code=SETsto("das")},
 	WIDGET.newSlider{name="arr",	x=250,	y=260,w=525,unit=15,disp=SETval("arr"),	show=sliderShow,code=SETsto("arr")},
 	WIDGET.newSlider{name="sddas",	x=250,	y=330,w=350,unit=10,disp=SETval("sddas"),show=sliderShow,code=SETsto("sddas")},
 	WIDGET.newSlider{name="sdarr",	x=250,	y=400,w=140,unit=4,	disp=SETval("sdarr"),show=sliderShow,code=SETsto("sdarr")},
 	WIDGET.newSlider{name="dascut",	x=250,	y=470,w=600,unit=20,disp=SETval("dascut"),show=sliderShow,code=SETsto("dascut")},
+	WIDGET.newSlider{name="dropcut",x=250,	y=540,w=300,unit=10,disp=SETval("dropcut"),show=sliderShow,code=SETsto("dropcut")},
 	WIDGET.newSwitch{name="ihs",	x=1100,	y=260,				disp=SETval("ihs"),	code=SETrev("ihs")},
 	WIDGET.newSwitch{name="irs",	x=1100,	y=330,				disp=SETval("irs"),	code=SETrev("irs")},
 	WIDGET.newSwitch{name="ims",	x=1100,	y=400,				disp=SETval("ims"),	code=SETrev("ims")},
-	WIDGET.newButton{name="reset",	x=160,	y=580,w=200,h=100,color='lR',font=40,
+	WIDGET.newButton{name="reset",	x=160,	y=640,w=200,h=100,color='lR',font=40,
 		code=function()
 			local _=SETTING
 			_.das,_.arr,_.dascut=10,2,0