===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,290 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+var BloodSplatter = Container.expand(function () {
+	var self = Container.call(this);
+	var blood = self.attachAsset('bloodSplatter', {
+		anchorX: 0.5,
+		anchorY: 0.5,
+		alpha: 0.8
+	});
+	self.fadeOut = function () {
+		tween(blood, {
+			alpha: 0,
+			scaleX: 2,
+			scaleY: 2
+		}, {
+			duration: 1000,
+			onFinish: function onFinish() {
+				self.destroy();
+			}
+		});
+	};
+	return self;
+});
+var House = Container.expand(function () {
+	var self = Container.call(this);
+	var houseGraphics = self.attachAsset('house', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.maxHealth = 100;
+	self.health = self.maxHealth;
+	self.takeDamage = function (damage) {
+		self.health -= damage;
+		if (self.health < 0) self.health = 0;
+		// Flash red when hit
+		tween(houseGraphics, {
+			tint: 0xFF0000
+		}, {
+			duration: 300,
+			onFinish: function onFinish() {
+				tween(houseGraphics, {
+					tint: 0xFFFFFF
+				}, {
+					duration: 300
+				});
+			}
+		});
+		// Play sound
+		LK.getSound('houseHit').play();
+		// Update health bar
+		updateHealthBar();
+		// Check game over
+		if (self.health <= 0) {
+			gameOver();
+		}
+	};
+	return self;
+});
+var Zombie = Container.expand(function (type) {
+	var self = Container.call(this);
+	type = type || 'normal';
+	var assetId = 'zombie';
+	if (type === 'fast') assetId = 'fastZombie';else if (type === 'strong') assetId = 'strongZombie';
+	var zombieGraphics = self.attachAsset(assetId, {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.type = type;
+	self.health = type === 'strong' ? 3 : 1;
+	self.maxHealth = self.health;
+	self.speed = type === 'fast' ? 2.5 : type === 'strong' ? 1.2 : 1.8;
+	self.damage = type === 'strong' ? 2 : 1;
+	self.targetX = 1024;
+	self.targetY = 1366;
+	self.takeDamage = function () {
+		self.health--;
+		if (self.health > 0) {
+			// Flash red when damaged but not killed
+			tween(zombieGraphics, {
+				tint: 0xFF0000
+			}, {
+				duration: 200,
+				onFinish: function onFinish() {
+					tween(zombieGraphics, {
+						tint: 0xFFFFFF
+					}, {
+						duration: 200
+					});
+				}
+			});
+		}
+		return self.health <= 0;
+	};
+	self.update = function () {
+		var dx = self.targetX - self.x;
+		var dy = self.targetY - self.y;
+		var distance = Math.sqrt(dx * dx + dy * dy);
+		if (distance > 10) {
+			self.x += dx / distance * self.speed;
+			self.y += dy / distance * self.speed;
+		}
+	};
+	self.down = function (x, y, obj) {
+		var isDead = self.takeDamage();
+		if (isDead) {
+			// Create blood splatter
+			var blood = new BloodSplatter();
+			blood.x = self.x;
+			blood.y = self.y;
+			game.addChild(blood);
+			blood.fadeOut();
+			// Update score and stats
+			zombiesKilled++;
+			var points = self.type === 'strong' ? 15 : self.type === 'fast' ? 10 : 5;
+			LK.setScore(LK.getScore() + points);
+			// Play sound
+			LK.getSound('zombieHit').play();
+			// Remove from array and destroy
+			for (var i = zombies.length - 1; i >= 0; i--) {
+				if (zombies[i] === self) {
+					zombies.splice(i, 1);
+					break;
+				}
+			}
+			self.destroy();
+			// Check for level up
+			checkLevelUp();
+		}
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
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+	backgroundColor: 0x2F4F2F
+});
+
+/**** 
+* Game Code
+****/ 
+// Game variables
+var zombies = [];
+var house;
+var healthBar;
+var healthBarBg;
+var scoreTxt;
+var levelTxt;
+var waveTxt;
+var zombiesKilled = 0;
+var currentLevel = 1;
+var currentWave = 1;
+var waveTimer = 0;
+var spawnTimer = 0;
+var gameRunning = true;
+// Initialize UI
+scoreTxt = new Text2('Score: 0', {
+	size: 60,
+	fill: 0xFFFFFF
+});
+scoreTxt.anchor.set(0, 0);
+scoreTxt.x = 120;
+scoreTxt.y = 50;
+LK.gui.topLeft.addChild(scoreTxt);
+levelTxt = new Text2('Level: 1', {
+	size: 50,
+	fill: 0xFFD700
+});
+levelTxt.anchor.set(1, 0);
+LK.gui.topRight.addChild(levelTxt);
+waveTxt = new Text2('Wave: 1', {
+	size: 50,
+	fill: 0x87CEEB
+});
+waveTxt.anchor.set(0.5, 0);
+LK.gui.top.addChild(waveTxt);
+// Initialize house
+house = game.addChild(new House());
+house.x = 1024;
+house.y = 1366;
+// Initialize health bar
+healthBarBg = LK.getAsset('healthBarBg', {
+	anchorX: 0.5,
+	anchorY: 0.5
+});
+healthBarBg.x = 1024;
+healthBarBg.y = 200;
+game.addChild(healthBarBg);
+healthBar = LK.getAsset('healthBar', {
+	anchorX: 0.5,
+	anchorY: 0.5
+});
+healthBar.x = 1024;
+healthBar.y = 200;
+game.addChild(healthBar);
+function updateHealthBar() {
+	var healthPercent = house.health / house.maxHealth;
+	healthBar.width = 400 * healthPercent;
+	// Change color based on health
+	if (healthPercent > 0.6) {
+		healthBar.tint = 0x00FF00; // Green
+	} else if (healthPercent > 0.3) {
+		healthBar.tint = 0xFFFF00; // Yellow
+	} else {
+		healthBar.tint = 0xFF0000; // Red
+	}
+}
+function spawnZombie() {
+	var zombie = new Zombie(getZombieType());
+	// Spawn from random edge
+	var edge = Math.floor(Math.random() * 4);
+	switch (edge) {
+		case 0:
+			// Top
+			zombie.x = Math.random() * 2048;
+			zombie.y = -50;
+			break;
+		case 1:
+			// Right
+			zombie.x = 2098;
+			zombie.y = Math.random() * 2732;
+			break;
+		case 2:
+			// Bottom
+			zombie.x = Math.random() * 2048;
+			zombie.y = 2782;
+			break;
+		case 3:
+			// Left
+			zombie.x = -50;
+			zombie.y = Math.random() * 2732;
+			break;
+	}
+	zombies.push(zombie);
+	game.addChild(zombie);
+}
+function getZombieType() {
+	var rand = Math.random();
+	if (currentLevel > 3 && rand < 0.2) return 'strong';
+	if (currentLevel > 2 && rand < 0.4) return 'fast';
+	return 'normal';
+}
+function checkLevelUp() {
+	var newLevel = Math.floor(zombiesKilled / 10) + 1;
+	if (newLevel > currentLevel) {
+		currentLevel = newLevel;
+		levelTxt.setText('Level: ' + currentLevel);
+		LK.effects.flashScreen(0xFFD700, 500);
+	}
+}
+function gameOver() {
+	gameRunning = false;
+	LK.showGameOver();
+}
+game.update = function () {
+	if (!gameRunning) return;
+	// Update score display
+	scoreTxt.setText('Score: ' + LK.getScore());
+	// Wave management
+	waveTimer++;
+	if (waveTimer > 1800) {
+		// 30 seconds per wave
+		currentWave++;
+		waveTxt.setText('Wave: ' + currentWave);
+		waveTimer = 0;
+	}
+	// Spawn zombies
+	spawnTimer++;
+	var spawnRate = Math.max(30 - currentWave * 2, 10); // Faster spawning each wave
+	if (spawnTimer > spawnRate) {
+		spawnZombie();
+		spawnTimer = 0;
+	}
+	// Check zombie collisions with house
+	for (var i = zombies.length - 1; i >= 0; i--) {
+		var zombie = zombies[i];
+		if (zombie.intersects(house)) {
+			house.takeDamage(zombie.damage);
+			zombies.splice(i, 1);
+			zombie.destroy();
+		}
+	}
+};
\ No newline at end of file