diff --git a/parts/eventsets/stack_e.lua b/parts/eventsets/stack_e.lua
index 9d2eb852..b103b175 100644
--- a/parts/eventsets/stack_e.lua
+++ b/parts/eventsets/stack_e.lua
@@ -5,6 +5,7 @@ return{
         setFont(60)
         mStr(P.stat.row,63,280)
         mText(TEXTOBJ.line,63,350)
+        PLY.draw.drawMarkLine(P,20,.3,1,1,TIME()%.42<.21 and .95 or .6)
     end,
     dropPiece=function(P)
         if #P.field>20 then
diff --git a/parts/eventsets/stack_h.lua b/parts/eventsets/stack_h.lua
index e4b2138f..a1f80bb0 100644
--- a/parts/eventsets/stack_h.lua
+++ b/parts/eventsets/stack_h.lua
@@ -5,6 +5,7 @@ return{
         setFont(60)
         mStr(P.stat.row,63,280)
         mText(TEXTOBJ.line,63,350)
+        PLY.draw.drawMarkLine(P,18,.3,1,1,TIME()%.42<.21 and .95 or .6)
     end,
     dropPiece=function(P)
         if #P.field>20 then
diff --git a/parts/eventsets/stack_u.lua b/parts/eventsets/stack_u.lua
index c0cb83e9..36df7758 100644
--- a/parts/eventsets/stack_u.lua
+++ b/parts/eventsets/stack_u.lua
@@ -5,6 +5,7 @@ return{
         setFont(60)
         mStr(P.stat.row,63,280)
         mText(TEXTOBJ.line,63,350)
+        PLY.draw.drawMarkLine(P,17,.3,1,1,TIME()%.42<.21 and .95 or .6)
     end,
     dropPiece=function(P)
         if #P.field>20 then
diff --git a/parts/player/draw.lua b/parts/player/draw.lua
index 0d1a0bb0..6056b7b8 100644
--- a/parts/player/draw.lua
+++ b/parts/player/draw.lua
@@ -658,16 +658,26 @@ local draw={}
 draw.drawGhost=drawGhost
 draw.applyField=_applyField
 draw.cancelField=_cancelField
-function draw.drawTargetLine(P,r)
-    if r<=20+(P.fieldBeneath+P.fieldUp+10)/30 and r>0 then
+function draw.drawTargetLine(P,h)
+    if h<=20+(P.fieldBeneath+P.fieldUp+10)/30 and h>0 then
         gc_setLineWidth(3)
-        gc_setColor(1,r>10 and 0 or .2+.8*rnd(),.5)
+        gc_setColor(1,h>10 and 0 or .2+.8*rnd(),.5)
         _applyField(P)
-        r=600-30*r
+        h=600-30*h
         if P.falling~=-1 then
-            r=r-#P.clearingRow*(P.gameEnv.smooth and(P.falling/(P.gameEnv.fall+1))^1.6*30 or 30)
+            h=h-#P.clearingRow*(P.gameEnv.smooth and(P.falling/(P.gameEnv.fall+1))^1.6*30 or 30)
         end
-        gc_line(0,r,300,r)
+        gc_line(0,h,300,h)
+        _cancelField()
+    end
+end
+function draw.drawMarkLine(P,h,r,g,b,a)
+    if h<=20+(P.fieldBeneath+P.fieldUp+10)/30 and h>0 then
+        gc_setLineWidth(4)
+        gc_setColor(r,g,b,a)
+        _applyField(P)
+        h=600-30*h
+        gc_line(0,h,300,h)
         _cancelField()
     end
 end