===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,268 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+var Enemy = Container.expand(function () {
+	var self = Container.call(this);
+	var enemyGraphics = self.attachAsset('enemy', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 4;
+	self.lastY = 0;
+	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.health = 3;
+	self.maxHealth = 3;
+	self.speed = 5;
+	self.isInLeftLane = true;
+	self.isMoving = false;
+	self.switchLane = function () {
+		if (self.isMoving) return;
+		self.isMoving = true;
+		var targetX = self.isInLeftLane ? rightLaneX : leftLaneX;
+		self.isInLeftLane = !self.isInLeftLane;
+		tween(self, {
+			x: targetX
+		}, {
+			duration: 200,
+			easing: tween.easeOut,
+			onFinish: function onFinish() {
+				self.isMoving = false;
+			}
+		});
+	};
+	self.takeDamage = function () {
+		self.health--;
+		LK.effects.flashObject(self, 0xFF0000, 500);
+		LK.getSound('damage').play();
+		if (self.health <= 0) {
+			LK.showGameOver();
+		}
+	};
+	self.heal = function () {
+		if (self.health < self.maxHealth) {
+			self.health++;
+		}
+	};
+	self.upgradeSpeed = function () {
+		self.speed = Math.min(self.speed + 1, 10);
+	};
+	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.lastY = 0;
+	self.type = 'health'; // 'health', 'speed', 'score'
+	self.update = function () {
+		self.y += self.speed;
+		self.rotation += 0.05;
+	};
+	return self;
+});
+var Upgrade = Container.expand(function () {
+	var self = Container.call(this);
+	var upgradeGraphics = self.attachAsset('upgrade', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 3;
+	self.lastY = 0;
+	self.type = 'speed'; // 'speed', 'health'
+	self.update = function () {
+		self.y += self.speed;
+		self.rotation += 0.03;
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
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+	backgroundColor: 0x1a1a1a
+});
+
+/**** 
+* Game Code
+****/ 
+// Game dimensions and layout
+var leftLaneX = 2048 * 0.25;
+var rightLaneX = 2048 * 0.75;
+var wallX = 2048 * 0.5;
+// Create central wall
+var wall = game.addChild(LK.getAsset('wall', {
+	anchorX: 0.5,
+	anchorY: 0.5,
+	x: wallX,
+	y: 2732 / 2
+}));
+// Create player
+var player = game.addChild(new Player());
+player.x = leftLaneX;
+player.y = 2732 - 200;
+// Game arrays
+var enemies = [];
+var powerups = [];
+var upgrades = [];
+// Game variables
+var gameSpeed = 1;
+var distance = 0;
+var enemySpawnRate = 120;
+var powerupSpawnRate = 180;
+var upgradeSpawnRate = 300;
+// UI Elements
+var scoreText = new Text2('Score: 0', {
+	size: 60,
+	fill: 0xFFFFFF
+});
+scoreText.anchor.set(0, 0);
+scoreText.x = 50;
+scoreText.y = 50;
+LK.gui.topLeft.addChild(scoreText);
+var healthText = new Text2('Health: 3', {
+	size: 60,
+	fill: 0xFF0000
+});
+healthText.anchor.set(1, 0);
+LK.gui.topRight.addChild(healthText);
+var distanceText = new Text2('Distance: 0', {
+	size: 50,
+	fill: 0x00FF00
+});
+distanceText.anchor.set(0.5, 0);
+LK.gui.top.addChild(distanceText);
+// Input handling
+game.down = function (x, y, obj) {
+	player.switchLane();
+};
+// Main game loop
+game.update = function () {
+	distance += gameSpeed;
+	// Update game speed
+	gameSpeed += 0.001;
+	// Update score and UI
+	LK.setScore(Math.floor(distance / 10));
+	scoreText.setText('Score: ' + LK.getScore());
+	healthText.setText('Health: ' + player.health);
+	distanceText.setText('Distance: ' + Math.floor(distance));
+	// Spawn enemies in left lane
+	if (LK.ticks % Math.max(30, enemySpawnRate - Math.floor(distance / 100)) == 0) {
+		var enemy = new Enemy();
+		enemy.x = leftLaneX;
+		enemy.y = -50;
+		enemy.speed = 4 + gameSpeed;
+		enemy.lastY = enemy.y;
+		enemies.push(enemy);
+		game.addChild(enemy);
+	}
+	// Spawn powerups in right lane
+	if (LK.ticks % Math.max(60, powerupSpawnRate - Math.floor(distance / 50)) == 0) {
+		var powerup = new PowerUp();
+		powerup.x = rightLaneX + (Math.random() - 0.5) * 100;
+		powerup.y = -50;
+		powerup.speed = 3 + gameSpeed;
+		powerup.lastY = powerup.y;
+		powerup.type = Math.random() < 0.7 ? 'health' : 'score';
+		powerups.push(powerup);
+		game.addChild(powerup);
+	}
+	// Spawn upgrades in right lane
+	if (LK.ticks % Math.max(120, upgradeSpawnRate - Math.floor(distance / 30)) == 0) {
+		var upgrade = new Upgrade();
+		upgrade.x = rightLaneX + (Math.random() - 0.5) * 100;
+		upgrade.y = -50;
+		upgrade.speed = 3 + gameSpeed;
+		upgrade.lastY = upgrade.y;
+		upgrade.type = Math.random() < 0.5 ? 'speed' : 'health';
+		upgrades.push(upgrade);
+		game.addChild(upgrade);
+	}
+	// Update and check enemies
+	for (var i = enemies.length - 1; i >= 0; i--) {
+		var enemy = enemies[i];
+		// Check if enemy went off screen
+		if (enemy.lastY < 2732 + 50 && enemy.y >= 2732 + 50) {
+			enemy.destroy();
+			enemies.splice(i, 1);
+			continue;
+		}
+		// Check collision with player
+		if (enemy.intersects(player) && player.isInLeftLane) {
+			player.takeDamage();
+			enemy.destroy();
+			enemies.splice(i, 1);
+			continue;
+		}
+		enemy.lastY = enemy.y;
+	}
+	// Update and check powerups
+	for (var i = powerups.length - 1; i >= 0; i--) {
+		var powerup = powerups[i];
+		// Check if powerup went off screen
+		if (powerup.lastY < 2732 + 50 && powerup.y >= 2732 + 50) {
+			powerup.destroy();
+			powerups.splice(i, 1);
+			continue;
+		}
+		// Check collection by player
+		if (powerup.intersects(player) && !player.isInLeftLane) {
+			LK.getSound('collect').play();
+			if (powerup.type === 'health') {
+				player.heal();
+			} else if (powerup.type === 'score') {
+				LK.setScore(LK.getScore() + 10);
+			}
+			LK.effects.flashObject(powerup, 0xFFFFFF, 200);
+			powerup.destroy();
+			powerups.splice(i, 1);
+			continue;
+		}
+		powerup.lastY = powerup.y;
+	}
+	// Update and check upgrades
+	for (var i = upgrades.length - 1; i >= 0; i--) {
+		var upgrade = upgrades[i];
+		// Check if upgrade went off screen
+		if (upgrade.lastY < 2732 + 50 && upgrade.y >= 2732 + 50) {
+			upgrade.destroy();
+			upgrades.splice(i, 1);
+			continue;
+		}
+		// Check collection by player
+		if (upgrade.intersects(player) && !player.isInLeftLane) {
+			LK.getSound('collect').play();
+			if (upgrade.type === 'speed') {
+				player.upgradeSpeed();
+			} else if (upgrade.type === 'health') {
+				player.maxHealth++;
+				player.health = player.maxHealth;
+			}
+			LK.effects.flashObject(upgrade, 0x00FF00, 300);
+			upgrade.destroy();
+			upgrades.splice(i, 1);
+			continue;
+		}
+		upgrade.lastY = upgrade.y;
+	}
+};
+// Start background music
+LK.playMusic('background');
\ No newline at end of file