===================================================================
--- original.js
+++ change.js
@@ -40,9 +40,9 @@
 	self._move_migrated = function () {
 		// Obstacle moves from right to left
 		self.x += self.speedX;
 		// Rotate obstacle counterclockwise
-		self.rotation -= 0.17;
+		// self.rotation -= 0.17;
 	};
 });
 
 /****