var ParticleSplash = Container.expand(function () {
	var self = Container.call(this);
	var particleSplashGraphics = self.createAsset('particleSplash', 'Particle Splash Graphics', .5, .5);
	self.directionX = Math.random() * 2 - 1;
	self.directionY = Math.random() * 2 - 1;
	self.speedMultiplier = 1;
	self.animate = function () {
		self.alpha -= 0.01;
		self.x += self.directionX * self.speedMultiplier;
		self.y += self.directionY * self.speedMultiplier;
		if (self.alpha <= 0) {
			self.destroy();
		}
	};
});
var ProgressBar = Container.expand(function () {
	var self = Container.call(this);
	var progressBarGraphics = self.createAsset('progressBar', 'Progress Bar Graphics', 0, .5);
	self.updateProgress = function (progress) {
		progressBarGraphics.scale.x = progress;
	};
});
var Snowball = Container.expand(function () {
	var self = Container.call(this);
	var snowballGraphics = self.createAsset('snowball', 'Snowball Graphics', .5, .5);
	self.speed = -5;
	self.targetX = 0;
	self.targetY = 0;
	self.speedX = 0;
	self.speedY = 0;
	self.move = function () {
		self.x += self.speedX;
		self.y += self.speedY;
	};
});
var ZombieKid = Container.expand(function () {
	var self = Container.call(this);
	var zombieKidGraphics = self.createAsset('zombieKid', 'Zombie Kid Graphics', .5, .5);
	self.speed = 1;
	self.move = function () {
		self.y += self.speed;
	};
});
var Santa = Container.expand(function () {
	var self = Container.call(this);
	var santaGraphics = self.createAsset('santa', 'Santa Graphics', .5, .5);
});
var Game = Container.expand(function () {
	var self = Container.call(this);
	LK.stageContainer.setBackgroundColor(0x008080);
	var santa = self.addChild(new Santa());
	santa.x = 2048 / 2;
	santa.y = 2732 - santa.height;
	var progressBar = self.addChild(new ProgressBar());
	progressBar.x = 2048 - progressBar.width;
	progressBar.y = 2732 - progressBar.height;
	var scoreTxt = new Text2('0', {
		size: 150,
		fill: "#ffffff"
	});
	scoreTxt.anchor.set(.5, 0);
	LK.gui.topCenter.addChild(scoreTxt);
	self.updateScoreDisplay = function () {
		scoreTxt.setText(LK.getScore().toString());
	};
	self.updateScoreDisplay();
	var snowballs = [];
	var zombieKids = [];
	var touchStartTime = 0;
	stage.on('down', function (obj) {
		touchStartTime = LK.ticks;
		progressBar.updateProgress(0);
	});
	stage.on('up', function (obj) {
		var event = obj.event;
		var pos = event.getLocalPosition(self);
		progressBar.updateProgress(0);
		if (snowballs.length < 5) {
			var newSnowball = new Snowball();
			newSnowball.x = santa.x;
			newSnowball.y = santa.y;
			newSnowball.targetX = pos.x;
			newSnowball.targetY = pos.y;
			var dx = newSnowball.targetX - newSnowball.x;
			var dy = newSnowball.targetY - newSnowball.y;
			var distance = Math.sqrt(dx * dx + dy * dy);
			var throwSpeed = 5;
			var touchDuration = LK.ticks - touchStartTime;
			var speedMultiplier = Math.min(touchDuration / 30, 10) * throwSpeed;
			newSnowball.speedX = -dx / distance * newSnowball.speed * speedMultiplier;
			newSnowball.speedY = -Math.abs(dy / distance * newSnowball.speed) * speedMultiplier;
			newSnowball.speedMultiplier = speedMultiplier;
			snowballs.push(newSnowball);
			self.addChild(newSnowball);
			var particleSplashSpeedMultiplier = speedMultiplier;
		}
	});
	LK.on('tick', function () {
		if (touchStartTime > 0) {
			var progress = Math.min((LK.ticks - touchStartTime) / 30, 1);
			progressBar.updateProgress(progress);
		}
		for (var a = snowballs.length - 1; a >= 0; a--) {
			if (snowballs[a]) {
				snowballs[a].move();
				for (var b = zombieKids.length - 1; b >= 0; b--) {
					if (zombieKids[b] && snowballs[a].intersects(zombieKids[b])) {
						LK.setScore(LK.getScore() + 1);
						self.updateScoreDisplay();
						for (var i = 0; i < 10; i++) {
							var particleSplash = new ParticleSplash();
							particleSplash.x = snowballs[a].x;
							particleSplash.y = snowballs[a].y;
							particleSplash.speedMultiplier = particleSplashSpeedMultiplier;
							self.addChild(particleSplash);
						}
						zombieKids[b].destroy();
						zombieKids.splice(b, 1);
						snowballs[a].destroy();
						snowballs.splice(a, 1);
						break;
					}
				}
				if (snowballs[a] && snowballs[a].y < -50) {
					snowballs[a].destroy();
					snowballs.splice(a, 1);
				}
			}
		}
		for (var b = zombieKids.length - 1; b >= 0; b--) {
			if (zombieKids[b]) {
				zombieKids[b].move();
			}
			if (zombieKids[b].y > 2732) {
				LK.showGameOver();
			}
		}
		for (var c = self.children.length - 1; c >= 0; c--) {
			if (self.children[c] instanceof ParticleSplash) {
				self.children[c].animate();
			}
		}
		if (LK.ticks % 60 == 0) {
			var newZombieKid = new ZombieKid();
			newZombieKid.x = Math.random() * (2048 - newZombieKid.width);
			newZombieKid.y = -newZombieKid.height;
			zombieKids.push(newZombieKid);
			self.addChild(newZombieKid);
		}
	});
});

===================================================================
--- original.js
+++ change.js
@@ -91,8 +91,9 @@
 			newSnowball.speedY = -Math.abs(dy / distance * newSnowball.speed) * speedMultiplier;
 			newSnowball.speedMultiplier = speedMultiplier;
 			snowballs.push(newSnowball);
 			self.addChild(newSnowball);
+			var particleSplashSpeedMultiplier = speedMultiplier;
 		}
 	});
 	LK.on('tick', function () {
 		if (touchStartTime > 0) {
@@ -109,9 +110,9 @@
 						for (var i = 0; i < 10; i++) {
 							var particleSplash = new ParticleSplash();
 							particleSplash.x = snowballs[a].x;
 							particleSplash.y = snowballs[a].y;
-							particleSplash.speedMultiplier = speedMultiplier;
+							particleSplash.speedMultiplier = particleSplashSpeedMultiplier;
 							self.addChild(particleSplash);
 						}
 						zombieKids[b].destroy();
 						zombieKids.splice(b, 1);