diff --git a/tetris/modes/inversion_a2n.lua b/tetris/modes/inversion_a2n.lua
new file mode 100644
index 0000000..4824f19
--- /dev/null
+++ b/tetris/modes/inversion_a2n.lua
@@ -0,0 +1,39 @@
+local SurvivalA2Game = require "tetris.modes.survival_a2n"
+
+local InversionGame = SurvivalA2Game:extend()
+
+InversionGame.name = "Inversion A2N"
+InversionGame.hash = "InversionA2N"
+InversionGame.tagline = "What if the active piece was invisible?"
+
+function InversionGame:new()
+    SurvivalA2Game:new()
+    self.piece_active_time = 0
+end
+
+function InversionGame:onPieceEnter()
+	if (self.level % 100 ~= 99 and self.level ~= 998) and not self.clear and self.frames ~= 0 then
+		self.level = self.level + 1
+	end
+    self.piece_active_time = 0
+end
+
+function InversionGame:onHold()
+    self.piece_active_time = 0
+end
+
+function InversionGame:whilePieceActive()
+    self.piece_active_time = self.piece_active_time + 1
+end
+
+function InversionGame:getPieceFadeoutTime()
+    return math.ceil(self:getLockDelay() / 4)
+end
+
+function InversionGame:drawPiece()
+    if self.piece ~= nil then
+        self.piece:draw(1 - self.piece_active_time / self:getPieceFadeoutTime(), 1, grid)
+    end
+end
+
+return InversionGame
\ No newline at end of file
diff --git a/tetris/rulesets/randompieces.lua b/tetris/rulesets/randompieces.lua
index 9ae4606..c81601e 100644
--- a/tetris/rulesets/randompieces.lua
+++ b/tetris/rulesets/randompieces.lua
@@ -41,10 +41,6 @@ RandomPieces.big_spawn_positions = {
     { x=2, y=3 }
 }
 
-RandomPieces.draw_offsets = {
-    { x=0, y=0 }
-}
-
 RandomPieces.next_sounds = {
     "O"
 }
diff --git a/tetris/rulesets/tetra.lua b/tetris/rulesets/tetra.lua
index eeaef5c..fdd75cc 100644
--- a/tetris/rulesets/tetra.lua
+++ b/tetris/rulesets/tetra.lua
@@ -100,6 +100,7 @@ function Tetra:onPieceCreate(piece) piece.lowest_y = -math.huge end
 function Tetra:onPieceDrop(piece) self:checkNewLow(piece) end
 function Tetra:onPieceMove() end
 function Tetra:onPieceRotate() end
+function Tetra:canPieceRotate() return true end
 function Tetra:get180RotationValue() return 2 end
 
 return Tetra