===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,299 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+var Alien = Container.expand(function (size) {
+	var self = Container.call(this);
+	self.size = size || 1;
+	self.health = size;
+	self.maxHealth = size;
+	var assetName = 'alien' + size;
+	var alienGraphics = self.attachAsset(assetName, {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = Math.random() * 2 + 1;
+	self.lastShot = 0;
+	self.shootDelay = 60 + Math.random() * 120;
+	self.update = function () {
+		self.y += self.speed;
+		// Alien shooting
+		self.lastShot++;
+		if (self.lastShot >= self.shootDelay && self.y > 100 && self.y < 2000) {
+			self.lastShot = 0;
+			self.shootDelay = 60 + Math.random() * 120;
+			var bullet = new AlienBullet();
+			bullet.x = self.x;
+			bullet.y = self.y + 30;
+			alienBullets.push(bullet);
+			game.addChild(bullet);
+		}
+	};
+	self.takeDamage = function () {
+		self.health--;
+		if (self.health <= 0) {
+			return true; // Destroyed
+		}
+		return false;
+	};
+	return self;
+});
+var AlienBullet = Container.expand(function () {
+	var self = Container.call(this);
+	var bulletGraphics = self.attachAsset('alienBullet', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 6;
+	self.update = function () {
+		self.y += self.speed;
+	};
+	return self;
+});
+var Player = Container.expand(function () {
+	var self = Container.call(this);
+	var playerGraphics = self.attachAsset('player', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.fireRate = 15;
+	self.weaponLevel = 1;
+	self.lastShot = 0;
+	return self;
+});
+var PlayerBullet = Container.expand(function () {
+	var self = Container.call(this);
+	var bulletGraphics = self.attachAsset('playerBullet', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = -12;
+	self.update = function () {
+		self.y += self.speed;
+	};
+	return self;
+});
+var PowerUp = Container.expand(function () {
+	var self = Container.call(this);
+	var powerupGraphics = self.attachAsset('powerup', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 3;
+	self.bobOffset = Math.random() * Math.PI * 2;
+	self.update = function () {
+		self.y += self.speed;
+		self.x += Math.sin((LK.ticks + self.bobOffset) * 0.1) * 2;
+		powerupGraphics.rotation += 0.05;
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
\ No newline at end of file
+	backgroundColor: 0x000033
+});
+
+/**** 
+* Game Code
+****/ 
+var player = game.addChild(new Player());
+player.x = 2048 / 2;
+player.y = 2400;
+var playerBullets = [];
+var aliens = [];
+var alienBullets = [];
+var powerups = [];
+var waveTimer = 0;
+var difficultyLevel = 1;
+var alienSpawnRate = 180;
+// UI Elements
+var scoreTxt = new Text2('0', {
+	size: 80,
+	fill: 0xFFFFFF
+});
+scoreTxt.anchor.set(0.5, 0);
+LK.gui.top.addChild(scoreTxt);
+scoreTxt.y = 100;
+var weaponTxt = new Text2('Weapon Level: 1', {
+	size: 50,
+	fill: 0x00FF00
+});
+weaponTxt.anchor.set(0, 0);
+LK.gui.topRight.addChild(weaponTxt);
+weaponTxt.x = -350;
+weaponTxt.y = 50;
+// Player dragging
+var dragNode = null;
+function handleMove(x, y, obj) {
+	if (dragNode) {
+		dragNode.x = Math.max(40, Math.min(2008, x));
+		dragNode.y = Math.max(1366, Math.min(2600, y));
+	}
+}
+game.move = handleMove;
+game.down = function (x, y, obj) {
+	dragNode = player;
+	handleMove(x, y, obj);
+};
+game.up = function (x, y, obj) {
+	dragNode = null;
+};
+// Spawn alien function
+function spawnAlien() {
+	var size = 1;
+	var rand = Math.random();
+	if (difficultyLevel >= 3 && rand < 0.1) size = 5;else if (difficultyLevel >= 2 && rand < 0.2) size = 4;else if (difficultyLevel >= 2 && rand < 0.35) size = 3;else if (rand < 0.5) size = 2;
+	var alien = new Alien(size);
+	alien.x = Math.random() * 1800 + 124;
+	alien.y = -100;
+	aliens.push(alien);
+	game.addChild(alien);
+}
+// Player shooting
+function playerShoot() {
+	if (LK.ticks - player.lastShot >= player.fireRate) {
+		player.lastShot = LK.ticks;
+		if (player.weaponLevel === 1) {
+			var bullet = new PlayerBullet();
+			bullet.x = player.x;
+			bullet.y = player.y - 60;
+			playerBullets.push(bullet);
+			game.addChild(bullet);
+		} else if (player.weaponLevel === 2) {
+			// Double shot
+			var bullet1 = new PlayerBullet();
+			bullet1.x = player.x - 20;
+			bullet1.y = player.y - 60;
+			playerBullets.push(bullet1);
+			game.addChild(bullet1);
+			var bullet2 = new PlayerBullet();
+			bullet2.x = player.x + 20;
+			bullet2.y = player.y - 60;
+			playerBullets.push(bullet2);
+			game.addChild(bullet2);
+		} else if (player.weaponLevel >= 3) {
+			// Triple shot
+			var bullet1 = new PlayerBullet();
+			bullet1.x = player.x - 30;
+			bullet1.y = player.y - 60;
+			playerBullets.push(bullet1);
+			game.addChild(bullet1);
+			var bullet2 = new PlayerBullet();
+			bullet2.x = player.x;
+			bullet2.y = player.y - 60;
+			playerBullets.push(bullet2);
+			game.addChild(bullet2);
+			var bullet3 = new PlayerBullet();
+			bullet3.x = player.x + 30;
+			bullet3.y = player.y - 60;
+			playerBullets.push(bullet3);
+			game.addChild(bullet3);
+		}
+		LK.getSound('shoot').play();
+	}
+}
+game.update = function () {
+	scoreTxt.setText(LK.getScore());
+	weaponTxt.setText('Weapon Level: ' + player.weaponLevel);
+	// Player auto-shooting
+	playerShoot();
+	// Wave management
+	waveTimer++;
+	if (waveTimer >= alienSpawnRate) {
+		waveTimer = 0;
+		spawnAlien();
+		// Increase difficulty over time
+		if (LK.getScore() > difficultyLevel * 100) {
+			difficultyLevel++;
+			alienSpawnRate = Math.max(60, alienSpawnRate - 10);
+		}
+	}
+	// Update and cleanup player bullets
+	for (var i = playerBullets.length - 1; i >= 0; i--) {
+		var bullet = playerBullets[i];
+		if (bullet.y < -50) {
+			bullet.destroy();
+			playerBullets.splice(i, 1);
+			continue;
+		}
+		// Check collision with aliens
+		for (var j = aliens.length - 1; j >= 0; j--) {
+			var alien = aliens[j];
+			if (bullet.intersects(alien)) {
+				if (alien.takeDamage()) {
+					// Alien destroyed
+					LK.setScore(LK.getScore() + alien.size * 5);
+					// Drop powerup from size 5 aliens
+					if (alien.size === 5 && Math.random() < 0.7) {
+						var powerup = new PowerUp();
+						powerup.x = alien.x;
+						powerup.y = alien.y;
+						powerups.push(powerup);
+						game.addChild(powerup);
+					}
+					LK.getSound('enemyHit').play();
+					alien.destroy();
+					aliens.splice(j, 1);
+				}
+				bullet.destroy();
+				playerBullets.splice(i, 1);
+				break;
+			}
+		}
+	}
+	// Update and cleanup aliens
+	for (var i = aliens.length - 1; i >= 0; i--) {
+		var alien = aliens[i];
+		if (alien.y > 2800) {
+			alien.destroy();
+			aliens.splice(i, 1);
+			continue;
+		}
+		// Check collision with player
+		if (alien.intersects(player)) {
+			LK.effects.flashScreen(0xff0000, 1000);
+			LK.showGameOver();
+			return;
+		}
+	}
+	// Update and cleanup alien bullets
+	for (var i = alienBullets.length - 1; i >= 0; i--) {
+		var bullet = alienBullets[i];
+		if (bullet.y > 2800) {
+			bullet.destroy();
+			alienBullets.splice(i, 1);
+			continue;
+		}
+		// Check collision with player
+		if (bullet.intersects(player)) {
+			LK.effects.flashScreen(0xff0000, 1000);
+			LK.showGameOver();
+			return;
+		}
+	}
+	// Update and cleanup powerups
+	for (var i = powerups.length - 1; i >= 0; i--) {
+		var powerup = powerups[i];
+		if (powerup.y > 2800) {
+			powerup.destroy();
+			powerups.splice(i, 1);
+			continue;
+		}
+		// Check collision with player
+		if (powerup.intersects(player)) {
+			player.weaponLevel = Math.min(3, player.weaponLevel + 1);
+			player.fireRate = Math.max(8, player.fireRate - 3);
+			LK.getSound('powerupCollect').play();
+			LK.effects.flashObject(player, 0x00ffff, 500);
+			powerup.destroy();
+			powerups.splice(i, 1);
+		}
+	}
+};
\ No newline at end of file