var Upgrade = Container.expand(function (cost, effect) {
	var self = Container.call(this);
	var upgradeGraphics = self.createAsset('upgrade', 'Upgrade Graphics', .5, .5);
	var costText = new Text2('Cost: ' + cost, {
		size: 30,
		fill: '#ffffff',
		anchor: {
			x: 0.5,
			y: 1
		}
	});
	self.addChild(costText);
	var effectText = new Text2('Effect: Double Spawn Rate', {
		size: 30,
		fill: '#ffffff',
		anchor: {
			x: 0.5,
			y: 1
		}
	});
	effectText.y = 35;
	self.addChild(effectText);
	self.cost = cost;
	self.effect = effect;
	self.purchased = false;
	self.on('down', function () {
		if (!self.purchased && LK.getScore() >= self.cost) {
			LK.setScore(LK.getScore() - self.cost);
			self.effect();
			self.purchased = true;
			self.removeChild(self);
			upgradesTab.children.forEach(function (upgrade, index) {
				if (upgrade.purchased) {
					upgradesTab.removeChild(upgrade);
				} else {
					upgrade.y -= 150;
				}
			});
		}
	});
});
var TabButton = Container.expand(function (label, onClick) {
	var self = Container.call(this);
	var buttonGraphics = self.createAsset('tabButton', 'Tab Button Graphics', 0, 0.5);
	var buttonText = new Text2(label, {
		size: 50,
		fill: '#ffffff',
		anchor: {
			x: 0.5,
			y: 0.5
		},
		align: 'center'
	});
	self.addChild(buttonText);
	self.on('down', function () {
		onClick();
	});
});
var TabSystem = Container.expand(function () {
	var self = Container.call(this);
	self.tabs = {};
	self.currentTab = '';
	self.addTab = function (name, content) {
		self.tabs[name] = content;
		content.visible = false;
		self.addChild(content);
	};
	self.switchTab = function (name) {
		if (self.tabs[self.currentTab]) {
			self.tabs[self.currentTab].visible = false;
			self.tabs[self.currentTab].children.forEach(function (child) {
				child.visible = false;
			});
		}
		self.currentTab = name;
		self.tabs[name].visible = true;
		self.tabs[name].children.forEach(function (child) {
			child.visible = true;
		});
	};
});
var Snowflake = Container.expand(function () {
	var self = Container.call(this);
	var snowflakeGraphics = self.createAsset('snowflake', 'Snowflake Graphics', .5, .5);
	self.rotationSpeed = (Math.random() - 0.5) * 0.02;
	self.swayMagnitude = Math.random() * 10;
	self.swaySpeed = (Math.random() - 0.5) * 0.03;
	self.sizeFactor = Math.random() * 0.75 + 0.25;
	self.scale.set(self.sizeFactor);
	self.swayMagnitude = self.sizeFactor * 5;
	self.swayOffset = Math.random() * Math.PI * 2;
	self.update = function () {
		self.y += 1 + Math.random() * 2;
		self.rotation += self.rotationSpeed;
		self.x += Math.sin(LK.ticks * self.swaySpeed * 2 + self.swayOffset) * (self.swayMagnitude * 0.25);
	};
	self.collect = function () {
		LK.setScore(LK.getScore() + 1);
		scoreTxt.setText(LK.getScore().toString());
		self.destroy();
	};
});
var Cloud = Container.expand(function () {
	var self = Container.call(this);
	self.visible = true;
	var cloudGraphics = self.createAsset('cloud', 'Cloud Graphics', .5, .5);
	cloudGraphics.alpha = 1;
	self.spawnRate = 1;
	self.spawnSnowflake = function () {
		var snowflake = new Snowflake();
		var cloudWidth = cloudGraphics.width;
		snowflake.x = self.x - cloudWidth / 2 + Math.random() * cloudWidth;
		snowflake.y = self.y + cloudGraphics.height / 2;
		snowflake.rotation = Math.random() * Math.PI * 2;
		return snowflake;
	};
});
var Game = Container.expand(function () {
	var self = Container.call(this);
	LK.stageContainer.setBackgroundColor(0x000000);
	var tabSystem = new TabSystem();
	var upgradesTab = new Container();
	var upgrade1 = upgradesTab.addChild(new Upgrade(10, function () {
		cloud.spawnRate *= 2;
	}));
	upgrade1.x = 2048 / 2;
	upgrade1.y = 2732 / 4;
	var upgrade2 = upgradesTab.addChild(new Upgrade(20, function () {
		cloud.spawnRate *= 2;
	}));
	upgrade2.x = 2048 / 2;
	upgrade2.y = 2732 / 2;
	var upgrade3 = upgradesTab.addChild(new Upgrade(40, function () {
		cloud.spawnRate *= 2;
	}));
	upgrade3.x = 2048 / 2;
	upgrade3.y = 2732 / 4 * 3;
	var scoreTxt = new Text2('', {
		size: 150,
		fill: '#ffffff',
		anchor: {
			x: 0.5,
			y: 0
		}
	});
	LK.gui.topCenter.addChild(scoreTxt);
	scoreTxt.y = 100;
	var cloudTabButton = new TabButton('Cloud', function () {
		tabSystem.switchTab('Cloud');
	});
	var upgradesTabButton = new TabButton('Upgrades', function () {
		tabSystem.switchTab('Upgrades');
	});
	cloudTabButton.x = -cloudTabButton.width;
	cloudTabButton.y = scoreTxt.y + scoreTxt.height + 50;
	upgradesTabButton.x = 10;
	upgradesTabButton.y = cloudTabButton.y;
	LK.gui.topCenter.addChild(cloudTabButton);
	LK.gui.topCenter.addChild(upgradesTabButton);
	self.addChild(tabSystem);
	var snowflakes = [];
	var cloudTab = new Container();
	var cloud = cloudTab.addChild(new Cloud());
	cloud.x = 2048 / 2;
	cloud.y = 2732 / 2;
	tabSystem.addTab('Upgrades', upgradesTab);
	tabSystem.addTab('Cloud', cloudTab);
	tabSystem.switchTab('Cloud');
	var scoreTxt = new Text2('0', {
		size: 150,
		fill: '#ffffff',
		anchor: {
			x: 0.5,
			y: 0
		}
	});
	LK.gui.topCenter.addChild(scoreTxt);
	scoreTxt.y = 100;
	cloud.on('down', function (obj) {
		for (var i = 0; i < cloud.spawnRate; i++) {
			var snowflake = cloud.spawnSnowflake();
			snowflakes.push(snowflake);
			self.addChild(snowflake);
		}
		LK.setScore(LK.getScore() + 1);
		scoreTxt.setText(LK.getScore().toString());
	});
	var tickCount = 0;
	LK.on('tick', function () {
		for (var i = snowflakes.length - 1; i >= 0; i--) {
			snowflakes[i].update();
			if (snowflakes[i].y > 2732 + snowflakes[i].height) {
				snowflakes[i].destroy();
				snowflakes.splice(i, 1);
			}
		}
		scoreTxt.setText(LK.getScore().toString());
	});
});

===================================================================
--- original.js
+++ change.js
@@ -47,9 +47,10 @@
 		fill: '#ffffff',
 		anchor: {
 			x: 0.5,
 			y: 0.5
-		}
+		},
+		align: 'center'
 	});
 	self.addChild(buttonText);
 	self.on('down', function () {
 		onClick();