diff --git a/parts/eventsets/bigbang.lua b/parts/eventsets/bigbang.lua
new file mode 100644
index 00000000..e706d051
--- /dev/null
+++ b/parts/eventsets/bigbang.lua
@@ -0,0 +1,41 @@
+local function task_newBoard(P)
+    local F,L={},{}
+    --TODO
+    P:pushNextList(L)
+
+    P.control=false
+    if P.frameRun>180 then for _=1,26 do YIELD()end end
+    P.control=true
+
+    P:pushLineList(F)
+end
+local function _check(P)
+    if #P.field>0 then
+        P.gameEnv.heightLimit=P.gameEnv.heightLimit-P.lastPiece.row
+        if #P.field+P.stat.row%4>4 then
+            P:lose()
+        end
+    else
+        if P.stat.pc>=100 then
+            P:win('finish')
+        else
+            P:newTask(task_newBoard)
+            if P.frameRun<180 then P.fieldBeneath=0 end
+        end
+    end
+end
+return{
+    pushSpeed=5,
+    mesDisp=function(P)
+        setFont(60)
+        mStr(P.stat.pc,63,340)
+        mText(TEXTOBJ.pc,63,410)
+    end,
+    hook_drop=_check,
+    -- task=_check,--Just run one time at first to start first level
+    task=function(P)
+        P:switchKey(6,false)
+        YIELD()
+        P:lose()
+    end,
+}
diff --git a/parts/modes/bigbang.lua b/parts/modes/bigbang.lua
index afd31747..c1df20c5 100644
--- a/parts/modes/bigbang.lua
+++ b/parts/modes/bigbang.lua
@@ -1,18 +1,23 @@
 return{
     env={
-        drop=1e99,lock=1e99,
+        das=8,arr=1,
+        drop=30,lock=30,
         holdCount=0,
-        task=function(P)
-            while not P.control do YIELD()end
-            P:pressKey(6)
-            P:lose()
-        end,
-        bg='bg1',bgm='new era',
+        eventSet='bigbang',
+        bg='blockhole',bgm='peak',
     },
-    score=function(P)return{P.modeData.event,P.stat.finesseRate*.2/P.stat.piece}end,
-    scoreDisp=function(D)return("%d Stage %.2f%%"):format(D[1],D[2])end,
-    comp=function(a,b)return a[1]>b[1]or a[1]==b[1]and a[2]>b[2]end,
-    getRank=function()
-        return 1
+    score=function(P)return{P.stat.pc,P.stat.time}end,
+    scoreDisp=function(D)return D[1].." Stage   "..STRING.time(D[2])end,
+    comp=function(a,b)return a[1]>b[1]or a[1]==b[1]and a[2]<b[2]end,
+    getRank=function(P)
+        do return 1 end
+        local L=P.stat.pc
+        return
+        L>=100 and 5 or
+        L>=70 and 4 or
+        L>=40 and 3 or
+        L>=20 and 2 or
+        L>=10 and 1 or
+        L>=3 and 0
     end,
 }