===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,213 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+var Obstacle = Container.expand(function (type) {
+	var self = Container.call(this);
+	var obstacleGraphics = self.attachAsset(type, {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 8;
+	self.obstacleType = type;
+	self.passed = false;
+	self.update = function () {
+		self.y += self.speed + gameSpeed;
+	};
+	return self;
+});
+var PlayerCar = Container.expand(function () {
+	var self = Container.call(this);
+	var carGraphics = self.attachAsset('playerCar', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.currentLane = 0; // 0 = left lane, 1 = right lane
+	self.targetX = 0;
+	self.speed = 0;
+	self.switchLane = function (lane) {
+		if (self.currentLane !== lane) {
+			self.currentLane = lane;
+			self.targetX = lane === 0 ? leftLaneX : rightLaneX;
+			LK.getSound('switch').play();
+		}
+	};
+	self.update = function () {
+		// Smooth lane switching
+		var diff = self.targetX - self.x;
+		if (Math.abs(diff) > 2) {
+			self.x += diff * 0.15;
+		} else {
+			self.x = self.targetX;
+		}
+	};
+	return self;
+});
+var RoadLine = Container.expand(function () {
+	var self = Container.call(this);
+	var lineGraphics = self.attachAsset('roadLine', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 10;
+	self.update = function () {
+		self.y += self.speed + gameSpeed;
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
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+	backgroundColor: 0x2c3e50
+});
+
+/**** 
+* Game Code
+****/ 
+// Game variables
+var gameSpeed = 2;
+var difficultyTimer = 0;
+var obstacleTimer = 0;
+var roadLineTimer = 0;
+var leftLaneX = 1024 - 200;
+var rightLaneX = 1024 + 200;
+// Game objects arrays
+var obstacles = [];
+var roadLines = [];
+var obstacleTypes = ['enemyCar', 'truck', 'barrier'];
+// Create road surface
+var roadSurface = game.addChild(LK.getAsset('roadSurface', {
+	anchorX: 0.5,
+	anchorY: 0.5
+}));
+roadSurface.x = 1024;
+roadSurface.y = 1366;
+// Create road sides
+var leftSide = game.addChild(LK.getAsset('roadSide', {
+	anchorX: 0.5,
+	anchorY: 0.5
+}));
+leftSide.x = 374;
+leftSide.y = 1366;
+var rightSide = game.addChild(LK.getAsset('roadSide', {
+	anchorX: 0.5,
+	anchorY: 0.5
+}));
+rightSide.x = 1674;
+rightSide.y = 1366;
+// Create player car
+var playerCar = game.addChild(new PlayerCar());
+playerCar.x = leftLaneX;
+playerCar.y = 2400;
+playerCar.targetX = leftLaneX;
+// Create score display
+var scoreText = new Text2('Distance: 0', {
+	size: 80,
+	fill: '#ffffff'
+});
+scoreText.anchor.set(0.5, 0);
+LK.gui.top.addChild(scoreText);
+// Create speed display
+var speedText = new Text2('Speed: 1', {
+	size: 60,
+	fill: '#ffffff'
+});
+speedText.anchor.set(1, 0);
+LK.gui.topRight.addChild(speedText);
+speedText.x -= 50;
+speedText.y += 120;
+// Touch controls
+game.down = function (x, y, obj) {
+	if (x < 1024) {
+		// Left side of screen - switch to left lane
+		playerCar.switchLane(0);
+	} else {
+		// Right side of screen - switch to right lane
+		playerCar.switchLane(1);
+	}
+};
+// Spawn obstacle function
+function spawnObstacle() {
+	var obstacleType = obstacleTypes[Math.floor(Math.random() * obstacleTypes.length)];
+	var obstacle = new Obstacle(obstacleType);
+	// Randomly place in left or right lane
+	var lane = Math.floor(Math.random() * 2);
+	obstacle.x = lane === 0 ? leftLaneX : rightLaneX;
+	obstacle.y = -200;
+	obstacle.lane = lane;
+	obstacles.push(obstacle);
+	game.addChild(obstacle);
+}
+// Spawn road line function
+function spawnRoadLine() {
+	var roadLine = new RoadLine();
+	roadLine.x = 1024;
+	roadLine.y = -50;
+	roadLines.push(roadLine);
+	game.addChild(roadLine);
+}
+// Main game update loop
+game.update = function () {
+	// Update difficulty
+	difficultyTimer++;
+	if (difficultyTimer % 600 === 0) {
+		// Every 10 seconds
+		gameSpeed += 0.5;
+		speedText.setText('Speed: ' + Math.floor(gameSpeed));
+	}
+	// Update score
+	LK.setScore(Math.floor(LK.ticks / 10));
+	scoreText.setText('Distance: ' + LK.getScore());
+	// Spawn obstacles
+	obstacleTimer++;
+	var spawnRate = Math.max(60 - Math.floor(gameSpeed * 5), 30);
+	if (obstacleTimer % spawnRate === 0) {
+		spawnObstacle();
+	}
+	// Spawn road lines
+	roadLineTimer++;
+	if (roadLineTimer % 40 === 0) {
+		spawnRoadLine();
+	}
+	// Update and check obstacles
+	for (var i = obstacles.length - 1; i >= 0; i--) {
+		var obstacle = obstacles[i];
+		// Check if obstacle is off screen
+		if (obstacle.y > 2800) {
+			// Give points for passing obstacle
+			if (!obstacle.passed) {
+				LK.setScore(LK.getScore() + 10);
+				obstacle.passed = true;
+			}
+			obstacle.destroy();
+			obstacles.splice(i, 1);
+			continue;
+		}
+		// Check collision with player
+		if (obstacle.intersects(playerCar)) {
+			LK.getSound('crash').play();
+			LK.effects.flashScreen(0xff0000, 1000);
+			LK.showGameOver();
+			return;
+		}
+		// Check if obstacle was passed for scoring
+		if (!obstacle.passed && obstacle.y > playerCar.y + 100) {
+			obstacle.passed = true;
+			LK.setScore(LK.getScore() + 5);
+		}
+	}
+	// Update and clean up road lines
+	for (var j = roadLines.length - 1; j >= 0; j--) {
+		var roadLine = roadLines[j];
+		if (roadLine.y > 2800) {
+			roadLine.destroy();
+			roadLines.splice(j, 1);
+		}
+	}
+};
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