function formatNumber(num) {
	if (num >= 1000000) {
		return (num / 1000000).toFixed(2) + 'M';
	} else if (num >= 1000) {
		return (num / 1000).toFixed(2) + 'K';
	} else {
		return Math.floor(num);
	}
}
var RebirthButton = Container.expand(function () {
	var self = Container.call(this);
	var buttonGraphics = self.createAsset('rebirthButton', 'Rebirth Button', .5, .5);
	buttonGraphics.width = 900;
	buttonGraphics.height = 300;
	buttonGraphics.tint = 0x00ff00;
	self.rebirthLevel = 1;
	self.buttonText = new Text2('Rebirth: x' + self.rebirthLevel, {
		size: 100,
		fill: '#ffffff',
		anchor: {
			x: 0.5,
			y: 0.5
		},
		pivot: {
			x: 0.5,
			y: 0.5
		}
	});
	self.addChild(self.buttonText);
	self.buttonText.x = -400;
	self.buttonText.y = -100;
	var costText = new Text2('', {
		size: 100,
		fill: '#ffffff',
		anchor: {
			x: 0.5,
			y: 0.5
		},
		pivot: {
			x: 0.5,
			y: 0.5
		}
	});
	self.addChild(costText);
	costText.x = -400;
	costText.y = 0;
	self.setCost = function (cost, affordable) {
		costText.setText('Cost: ' + formatNumber(cost));
		costText.fill = affordable ? '#00ff00' : '#ff0000';
		buttonGraphics.tint = affordable ? 0x00ff00 : 0xff0000;
	};
	self.click = function () {
		buttonGraphics.width = buttonGraphics.width * 1.1;
		buttonGraphics.height = buttonGraphics.height * 1.1;
		LK.setTimeout(function () {
			buttonGraphics.width = buttonGraphics.width / 1.1;
			buttonGraphics.height = buttonGraphics.height / 1.1;
		}, 100);
	};
});
var PopUpNumber = Container.expand(function () {
	var self = Container.call(this);
	self.incomeText = new Text2('Income', {
		size: 300,
		fill: '#ffffff',
		anchor: {
			x: 0.5,
			y: 0.5
		}
	});
	self.addChild(self.incomeText);
	self.incomeText.x = 0;
	self.incomeText.y = 0;
	self.setText = function (text) {
		self.incomeText.setText(text);
	};
	self.fly = function (direction) {
		var speed = 20;
		var deceleration = 0.98;
		var flyInterval = LK.setInterval(function () {
			speed *= deceleration;
			self.x += Math.cos(direction) * speed;
			self.y += Math.sin(direction) * speed;
			self.alpha -= 0.005;
			if (self.incomeText) {
				self.incomeText.alpha = self.alpha;
			}
			if (self.alpha <= 0 || speed < 0.1) {
				LK.clearInterval(flyInterval);
				if (self.incomeText) {
					self.incomeText.destroy();
				}
				self.destroy();
			}
		}, 16);
	};
});
var Candy = Container.expand(function () {
	var self = Container.call(this);
	var candyGraphics = self.createAsset('candy', 'Candy Graphics', .5, .5);
	candyGraphics.scale.set(3);
	self.click = function () {
		self.scale.x = 1.1;
		self.scale.y = 1.1;
		LK.setTimeout(function () {
			self.scale.x = 1;
			self.scale.y = 1;
		}, 100);
	};
});
var BasicUpgradeButton = Container.expand(function () {
	var self = Container.call(this);
	var buttonGraphics = self.createAsset('upgradeButton', 'Basic Upgrade Button', .5, .5);
	buttonGraphics.width = 900;
	buttonGraphics.height = 300;
	buttonGraphics.tint = 0x00ff00;
	self.upgradeLevel = 1;
	self.buttonText = new Text2('Upgrade: +' + self.upgradeLevel, {
		size: 100,
		fill: '#ffffff',
		anchor: {
			x: 0.5,
			y: 0.5
		},
		pivot: {
			x: 0.5,
			y: 0.5
		}
	});
	self.addChild(self.buttonText);
	self.buttonText.x = -400;
	self.buttonText.y = -100;
	var costText = new Text2('', {
		size: 100,
		fill: '#ffffff',
		anchor: {
			x: 0.5,
			y: 0.5
		},
		pivot: {
			x: 0.5,
			y: 0.5
		}
	});
	self.addChild(costText);
	costText.x = -400;
	costText.y = 0;
	self.setCost = function (cost, affordable) {
		costText.setText('Cost: ' + formatNumber(cost));
		costText.fill = affordable ? '#00ff00' : '#ff0000';
		buttonGraphics.tint = affordable ? 0x00ff00 : 0xff0000;
	};
	self.click = function () {
		buttonGraphics.width = buttonGraphics.width * 1.1;
		buttonGraphics.height = buttonGraphics.height * 1.1;
		LK.setTimeout(function () {
			buttonGraphics.width = buttonGraphics.width / 1.1;
			buttonGraphics.height = buttonGraphics.height / 1.1;
		}, 100);
	};
});
var Game = Container.expand(function () {
	var self = Container.call(this);
	var background = self.createAsset('background3', 'Game Background', .5, .5);
	background.width *= 2;
	background.height *= 2;
	background.x = 2048 / 2;
	background.y = 2732 / 2;
	self.addChild(background);
	var blackLayer = self.createAsset('blackLayer', 'Black Background Layer', .5, .5);
	blackLayer.width = background.width;
	blackLayer.height = background.height;
	blackLayer.x = 2048 / 2;
	blackLayer.y = 2732 / 2;
	blackLayer.alpha = 1;
	self.addChild(blackLayer);
	var clickIntensity = 0;
	var score = 0;
	var clickPower = 1;
	var candy = self.addChild(new Candy());
	var upgrade = self.addChild(new BasicUpgradeButton());
	var rebirth = self.addChild(new RebirthButton());
	candy.x = 2048 / 2;
	candy.y = 2732 / 2;
	upgrade.x = 2048 / 2;
	upgrade.y = 2732 - 900;
	rebirth.x = 2048 / 2;
	rebirth.y = 2732 - 500;
	var scoreTxt = new Text2('🍬0', {
		size: 150,
		fill: "#ffffff"
	});
	scoreTxt.anchor.set(.5, 0);
	LK.gui.topCenter.addChild(scoreTxt);
	self.scoreTxt = scoreTxt;
	candy.on('down', function (obj) {
		candy.click();
		score += clickPower * Math.pow(2, rebirth.rebirthLevel);
		scoreTxt.setText('🍬' + formatNumber(score));
		var popUpNumber = self.addChild(new PopUpNumber());
		popUpNumber.x = candy.x - candy.width / 2;
		popUpNumber.y = candy.y - candy.height / 2;
		var direction = Math.random() * Math.PI * 2;
		popUpNumber.fly(direction);
		popUpNumber.setText('🍬' + formatNumber(clickPower * Math.pow(2, rebirth.rebirthLevel)));
		clickIntensity += (1 - clickIntensity) * 0.05;
		if (clickIntensity > 1) clickIntensity = 1;
		blackLayer.alpha = 1 - clickIntensity;
		var upgradeCost = Math.floor(5 * Math.pow(1.13, upgrade.upgradeLevel));
		upgrade.setCost(upgradeCost, score >= upgradeCost);
		var rebirthCost = Math.pow(10, rebirth.rebirthLevel) * 100;
		rebirth.setCost(rebirthCost, score >= rebirthCost);
	});
	LK.on('tick', function () {
		clickIntensity -= 0.002;
		if (clickIntensity < 0) clickIntensity = 0;
		blackLayer.alpha = 1 - clickIntensity;
	});
	LK.on('tick', function () {
		background.rotation += clickIntensity * 0.02;
	});
	upgrade.on('down', function (obj) {
		var upgradeCost = Math.floor(5 * Math.pow(1.13, upgrade.upgradeLevel));
		if (score >= upgradeCost) {
			score -= upgradeCost;
			clickPower += 1;
			upgrade.upgradeLevel++;
			scoreTxt.setText('🍬' + score);
			upgrade.buttonText.setText('Upgrade: +' + upgrade.upgradeLevel);
			upgradeCost = Math.floor(5 * Math.pow(1.13, upgrade.upgradeLevel));
		}
		upgrade.setCost(upgradeCost, score >= upgradeCost);
	});
	rebirth.on('down', function (obj) {
		var rebirthCost = Math.pow(10, rebirth.rebirthLevel) * 100;
		if (score >= rebirthCost) {
			score -= rebirthCost;
			rebirth.rebirthLevel++;
			scoreTxt.setText('🍬' + score);
			rebirth.buttonText.setText('Rebirth: x' + Math.pow(2, rebirth.rebirthLevel));
			rebirthCost = Math.pow(10, rebirth.rebirthLevel) * 100;
		}
		rebirth.setCost(rebirthCost, score >= rebirthCost);
	});
	var initialCost = 5 * Math.pow(1.13, upgrade.upgradeLevel);
	upgrade.setCost(initialCost, score >= initialCost);
	var initialRebirthCost = Math.pow(10, rebirth.rebirthLevel) * 100;
	rebirth.setCost(initialRebirthCost, score >= initialRebirthCost);
});

===================================================================
--- original.js
+++ change.js
@@ -207,8 +207,10 @@
 		if (clickIntensity > 1) clickIntensity = 1;
 		blackLayer.alpha = 1 - clickIntensity;
 		var upgradeCost = Math.floor(5 * Math.pow(1.13, upgrade.upgradeLevel));
 		upgrade.setCost(upgradeCost, score >= upgradeCost);
+		var rebirthCost = Math.pow(10, rebirth.rebirthLevel) * 100;
+		rebirth.setCost(rebirthCost, score >= rebirthCost);
 	});
 	LK.on('tick', function () {
 		clickIntensity -= 0.002;
 		if (clickIntensity < 0) clickIntensity = 0;