var Nutcracker = Container.expand(function () {
	var self = Container.call(this);
	var nutcrackerGraphics = self.createAsset('nutcracker', 'Nutcracker Graphics', .5, .5);
	self.move = function () {};
	self.attack = function () {};
});
var MouseTrap = Container.expand(function () {
	var self = Container.call(this);
	var mousetrapGraphics = self.createAsset('mousetrap', 'Mouse Trap Graphics', .5, .5);
	self.activate = function () {};
});
var Mouse = Container.expand(function () {
	var self = Container.call(this);
	var mouseGraphics = self.createAsset('mouse', 'Mouse Graphics', .5, .5);
	self.move = function () {
		self.x += 2;
	};
	self.attack = function () {};
});
var BuildingMenu = Container.expand(function () {
	var self = Container.call(this);
	self.y = 0;
	self.x = 1024;
	var menuBackground = self.createAsset('menuBackground', 'Building Menu Background', 0.5, 0);
	self.addChild(menuBackground);
});
var Game = Container.expand(function () {
	var self = Container.call(this);
	var background = self.createAsset('background', 'Background Graphics', 0, 0);
	self.addChildAt(background, 0);
	var buildingMenu = self.addChild(new BuildingMenu());
	LK.gui.topCenter.addChild(buildingMenu);
	var nutcrackers = [];
	var mousetraps = [];
	var mice = [];
	var initGame = function () {};
	var tickCounter = 0;
	LK.on('tick', function () {
		tickCounter++;
		if (tickCounter % 600 == 0) {
			var newMouse = new Mouse();
			newMouse.x = Math.random() * newMouse.width;
			var yLevels = [2532, 2232, 2032];
			newMouse.y = yLevels[Math.floor(Math.random() * yLevels.length)];
			mice.push(newMouse);
			self.addChild(newMouse);
		}
		for (var i = 0; i < nutcrackers.length; i++) {
			nutcrackers[i].move();
			nutcrackers[i].attack();
		}
		for (var i = 0; i < mousetraps.length; i++) {
			mousetraps[i].activate();
		}
		for (var i = mice.length - 1; i >= 0; i--) {
			mice[i].move();
			mice[i].attack();
			if (mice[i].x > 2048 + mice[i].width) {
				mice[i].destroy();
				mice.splice(i, 1);
			}
		}
	});
	initGame();
});

===================================================================
--- original.js
+++ change.js
@@ -16,12 +16,21 @@
 		self.x += 2;
 	};
 	self.attack = function () {};
 });
+var BuildingMenu = Container.expand(function () {
+	var self = Container.call(this);
+	self.y = 0;
+	self.x = 1024;
+	var menuBackground = self.createAsset('menuBackground', 'Building Menu Background', 0.5, 0);
+	self.addChild(menuBackground);
+});
 var Game = Container.expand(function () {
 	var self = Container.call(this);
 	var background = self.createAsset('background', 'Background Graphics', 0, 0);
 	self.addChildAt(background, 0);
+	var buildingMenu = self.addChild(new BuildingMenu());
+	LK.gui.topCenter.addChild(buildingMenu);
 	var nutcrackers = [];
 	var mousetraps = [];
 	var mice = [];
 	var initGame = function () {};