===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,275 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+var Lane = Container.expand(function () {
+	var self = Container.call(this);
+	var laneGraphics = self.attachAsset('lane', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.update = function () {
+		self.y += scrollSpeed;
+	};
+	return self;
+});
+var Obstacle = Container.expand(function () {
+	var self = Container.call(this);
+	var obstacleGraphics = self.attachAsset('obstacle', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 3;
+	self.update = function () {
+		self.y += self.speed + scrollSpeed;
+	};
+	return self;
+});
+var Player = Container.expand(function () {
+	var self = Container.call(this);
+	var playerGraphics = self.attachAsset('player', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 0;
+	self.maxSpeed = 8;
+	self.acceleration = 0.3;
+	self.deceleration = 0.5;
+	self.isAccelerating = false;
+	self.invulnerable = false;
+	self.invulnerableTime = 0;
+	self.startAcceleration = function () {
+		self.isAccelerating = true;
+		LK.getSound('engine').play();
+	};
+	self.stopAcceleration = function () {
+		self.isAccelerating = false;
+		LK.getSound('brake').play();
+	};
+	self.update = function () {
+		if (self.isAccelerating) {
+			self.speed = Math.min(self.speed + self.acceleration, self.maxSpeed);
+		} else {
+			self.speed = Math.max(self.speed - self.deceleration, 0);
+		}
+		// Handle invulnerability
+		if (self.invulnerable) {
+			self.invulnerableTime--;
+			playerGraphics.alpha = self.invulnerableTime % 10 < 5 ? 0.5 : 1.0;
+			if (self.invulnerableTime <= 0) {
+				self.invulnerable = false;
+				playerGraphics.alpha = 1.0;
+			}
+		}
+	};
+	self.makeInvulnerable = function (duration) {
+		self.invulnerable = true;
+		self.invulnerableTime = duration;
+	};
+	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.rotationSpeed = 0.1;
+	self.update = function () {
+		self.y += self.speed + scrollSpeed;
+		powerupGraphics.rotation += self.rotationSpeed;
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
\ No newline at end of file
+	backgroundColor: 0x2c5f2d
+});
+
+/**** 
+* Game Code
+****/ 
+// Game variables
+var player;
+var obstacles = [];
+var powerups = [];
+var lanes = [];
+var scrollSpeed = 4;
+var gameSpeed = 1;
+var spawnTimer = 0;
+var powerupTimer = 0;
+var distance = 0;
+var lanePositions = [512, 768, 1024, 1280, 1536]; // 5 lanes
+var nextLevelDistance = 1000;
+// UI Elements
+var 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);
+var speedTxt = new Text2('Speed: 0', {
+	size: 50,
+	fill: 0xFFFFFF
+});
+speedTxt.anchor.set(1, 0);
+speedTxt.x = -50;
+speedTxt.y = 50;
+LK.gui.topRight.addChild(speedTxt);
+var distanceTxt = new Text2('Distance: 0m', {
+	size: 50,
+	fill: 0xFFFFFF
+});
+distanceTxt.anchor.set(0.5, 0);
+distanceTxt.x = 0;
+distanceTxt.y = 50;
+LK.gui.top.addChild(distanceTxt);
+// Initialize player
+player = game.addChild(new Player());
+player.x = 1024; // Center lane
+player.y = 2200;
+// Initialize lane markers
+function createLaneMarkers() {
+	for (var i = 0; i < 8; i++) {
+		var lane = game.addChild(new Lane());
+		lane.x = 1024;
+		lane.y = i * 400 - 200;
+		lanes.push(lane);
+	}
+}
+createLaneMarkers();
+// Spawn obstacle
+function spawnObstacle() {
+	var obstacle = game.addChild(new Obstacle());
+	obstacle.x = lanePositions[Math.floor(Math.random() * lanePositions.length)];
+	obstacle.y = -100;
+	obstacles.push(obstacle);
+}
+// Spawn powerup
+function spawnPowerUp() {
+	var powerup = game.addChild(new PowerUp());
+	powerup.x = lanePositions[Math.floor(Math.random() * lanePositions.length)];
+	powerup.y = -100;
+	powerups.push(powerup);
+}
+// Handle player movement
+function handlePlayerMovement(x, y, obj) {
+	// Calculate which lane the touch is in
+	var targetLane = 2; // Default to center
+	if (x < 640) targetLane = 0;else if (x < 896) targetLane = 1;else if (x < 1152) targetLane = 2;else if (x < 1408) targetLane = 3;else targetLane = 4;
+	// Move player to target lane
+	tween(player, {
+		x: lanePositions[targetLane]
+	}, {
+		duration: 200,
+		easing: tween.easeOut
+	});
+}
+// Game controls
+game.down = function (x, y, obj) {
+	player.startAcceleration();
+	handlePlayerMovement(x, y, obj);
+};
+game.up = function (x, y, obj) {
+	player.stopAcceleration();
+};
+game.move = function (x, y, obj) {
+	if (player.isAccelerating) {
+		handlePlayerMovement(x, y, obj);
+	}
+};
+// Main game loop
+game.update = function () {
+	// Update distance and score
+	distance += scrollSpeed;
+	LK.setScore(Math.floor(distance / 10));
+	// Update UI
+	scoreTxt.setText('Score: ' + LK.getScore());
+	speedTxt.setText('Speed: ' + Math.floor(player.speed));
+	distanceTxt.setText('Distance: ' + Math.floor(distance / 10) + 'm');
+	// Increase difficulty over time
+	if (distance > nextLevelDistance) {
+		gameSpeed += 0.1;
+		scrollSpeed = Math.min(scrollSpeed + 0.5, 10);
+		nextLevelDistance += 1000;
+	}
+	// Spawn obstacles
+	spawnTimer++;
+	if (spawnTimer > Math.max(60 - gameSpeed * 5, 20)) {
+		spawnObstacle();
+		spawnTimer = 0;
+	}
+	// Spawn powerups
+	powerupTimer++;
+	if (powerupTimer > 300) {
+		spawnPowerUp();
+		powerupTimer = 0;
+	}
+	// Update and check obstacles
+	for (var i = obstacles.length - 1; i >= 0; i--) {
+		var obstacle = obstacles[i];
+		// Track last position for off-screen detection
+		if (obstacle.lastY === undefined) obstacle.lastY = obstacle.y;
+		// Remove off-screen obstacles
+		if (obstacle.lastY < 2800 && obstacle.y >= 2800) {
+			obstacle.destroy();
+			obstacles.splice(i, 1);
+			continue;
+		}
+		// Check collision with player
+		if (!player.invulnerable && obstacle.intersects(player)) {
+			LK.getSound('crash').play();
+			LK.effects.flashScreen(0xff0000, 500);
+			LK.showGameOver();
+			return;
+		}
+		obstacle.lastY = obstacle.y;
+	}
+	// Update and check powerups
+	for (var j = powerups.length - 1; j >= 0; j--) {
+		var powerup = powerups[j];
+		// Track last position for off-screen detection
+		if (powerup.lastY === undefined) powerup.lastY = powerup.y;
+		// Remove off-screen powerups
+		if (powerup.lastY < 2800 && powerup.y >= 2800) {
+			powerup.destroy();
+			powerups.splice(j, 1);
+			continue;
+		}
+		// Check collection
+		if (powerup.intersects(player)) {
+			LK.getSound('powerup').play();
+			LK.setScore(LK.getScore() + 50);
+			player.makeInvulnerable(180); // 3 seconds of invulnerability
+			powerup.destroy();
+			powerups.splice(j, 1);
+			continue;
+		}
+		powerup.lastY = powerup.y;
+	}
+	// Update and recycle lane markers
+	for (var k = lanes.length - 1; k >= 0; k--) {
+		var lane = lanes[k];
+		// Track last position for recycling
+		if (lane.lastY === undefined) lane.lastY = lane.y;
+		// Recycle lane markers that go off screen
+		if (lane.lastY < 2800 && lane.y >= 2800) {
+			lane.y = -200;
+		}
+		lane.lastY = lane.y;
+	}
+	// Win condition - reach 5000m
+	if (distance >= 50000) {
+		LK.showYouWin();
+	}
+};
\ No newline at end of file