===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,28 @@
-/****
+/**** 
+* Classes
+****/ 
+var Bubble = Container.expand(function () {
+	var self = Container.call(this);
+	var bubbleGraphics = self.attachAsset('bubble', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.update = function () {
+		self.y += self.speed;
+	};
+});
+var Grid = Container.expand(function () {
+	var self = Container.call(this);
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
 	backgroundColor: 0x000000
-});
\ No newline at end of file
+});
+
+/**** 
+* Game Code
+****/ 
+var grid = game.addChild(new Grid());
\ No newline at end of file