===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,252 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+// Coin
+var Coin = Container.expand(function () {
+	var self = Container.call(this);
+	var coinAsset = self.attachAsset('coin', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 0; // Will be set on spawn
+	self.update = function () {
+		self.y += self.speed;
+	};
+	return self;
+});
+// Obstacle Car
+var ObstacleCar = Container.expand(function () {
+	var self = Container.call(this);
+	var obsAsset = self.attachAsset('obstacle', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 0; // Will be set on spawn
+	self.update = function () {
+		self.y += self.speed;
+	};
+	return self;
+});
+// Player Car
+var PlayerCar = Container.expand(function () {
+	var self = Container.call(this);
+	var carAsset = self.attachAsset('car', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	// For collision, use the container itself
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
\ No newline at end of file
+	backgroundColor: 0x222222
+});
+
+/**** 
+* Game Code
+****/ 
+// Road lane
+// Coin
+// Obstacle (enemy car)
+// Car (player)
+// Road config
+var ROAD_WIDTH = 900;
+var ROAD_X = (2048 - ROAD_WIDTH) / 2;
+var ROAD_Y = 0;
+var ROAD_HEIGHT = 2732;
+// Lane config
+var LANE_COUNT = 3;
+var LANE_WIDTH = ROAD_WIDTH / LANE_COUNT;
+// Player config
+var PLAYER_START_LANE = 1; // 0 = left, 1 = center, 2 = right
+var PLAYER_Y = 2732 - 400;
+// Obstacle config
+var OBSTACLE_MIN_INTERVAL = 60; // frames
+var OBSTACLE_MAX_INTERVAL = 120; // frames
+// Coin config
+var COIN_MIN_INTERVAL = 80;
+var COIN_MAX_INTERVAL = 160;
+// Speed config
+var BASE_SPEED = 16;
+var SPEED_INCREMENT = 0.015; // per tick
+var MAX_SPEED = 38;
+// Game state
+var playerCar;
+var obstacles = [];
+var coins = [];
+var dragNode = null;
+var dragOffsetX = 0;
+var lastObstacleTick = 0;
+var nextObstacleInterval = 90;
+var lastCoinTick = 0;
+var nextCoinInterval = 120;
+var currentSpeed = BASE_SPEED;
+var ticksSurvived = 0;
+// Draw road background (just a gray rectangle)
+var roadBg = LK.getAsset('lane', {
+	width: ROAD_WIDTH,
+	height: ROAD_HEIGHT,
+	color: 0x444444,
+	anchorX: 0,
+	anchorY: 0,
+	x: ROAD_X,
+	y: ROAD_Y
+});
+game.addChild(roadBg);
+// Draw lane markers
+var laneMarkers = [];
+for (var i = 1; i < LANE_COUNT; i++) {
+	var marker = LK.getAsset('lane', {
+		width: 40,
+		height: ROAD_HEIGHT,
+		color: 0xffffff,
+		anchorX: 0.5,
+		anchorY: 0,
+		x: ROAD_X + i * LANE_WIDTH,
+		y: ROAD_Y
+	});
+	marker.alpha = 0.18;
+	game.addChild(marker);
+	laneMarkers.push(marker);
+}
+// Score text
+var scoreTxt = new Text2('0', {
+	size: 120,
+	fill: "#fff"
+});
+scoreTxt.anchor.set(0.5, 0);
+LK.gui.top.addChild(scoreTxt);
+// Place player car
+playerCar = new PlayerCar();
+playerCar.x = ROAD_X + (PLAYER_START_LANE + 0.5) * LANE_WIDTH;
+playerCar.y = PLAYER_Y;
+game.addChild(playerCar);
+// Helper: Clamp x to road
+function clampToRoad(x) {
+	var minX = ROAD_X + playerCar.width / 2;
+	var maxX = ROAD_X + ROAD_WIDTH - playerCar.width / 2;
+	if (x < minX) return minX;
+	if (x > maxX) return maxX;
+	return x;
+}
+// Touch/drag controls
+game.down = function (x, y, obj) {
+	// Only start drag if touch is on car
+	var local = playerCar.toLocal(game.toGlobal({
+		x: x,
+		y: y
+	}));
+	if (local.x >= -playerCar.width / 2 && local.x <= playerCar.width / 2 && local.y >= -playerCar.height / 2 && local.y <= playerCar.height / 2) {
+		dragNode = playerCar;
+		dragOffsetX = playerCar.x - x;
+	}
+};
+game.move = function (x, y, obj) {
+	if (dragNode) {
+		// Only allow horizontal movement, clamp to road
+		dragNode.x = clampToRoad(x + dragOffsetX);
+	}
+};
+game.up = function (x, y, obj) {
+	dragNode = null;
+};
+// Spawn obstacle
+function spawnObstacle() {
+	var lane = Math.floor(Math.random() * LANE_COUNT);
+	var obs = new ObstacleCar();
+	obs.x = ROAD_X + (lane + 0.5) * LANE_WIDTH;
+	obs.y = -obs.height / 2;
+	obs.speed = currentSpeed;
+	obstacles.push(obs);
+	game.addChild(obs);
+}
+// Spawn coin
+function spawnCoin() {
+	var lane = Math.floor(Math.random() * LANE_COUNT);
+	var coin = new Coin();
+	coin.x = ROAD_X + (lane + 0.5) * LANE_WIDTH;
+	coin.y = -coin.height / 2 - 100;
+	coin.speed = currentSpeed;
+	coins.push(coin);
+	game.addChild(coin);
+}
+// Main game update
+game.update = function () {
+	ticksSurvived++;
+	// Increase speed over time
+	if (currentSpeed < MAX_SPEED) {
+		currentSpeed += SPEED_INCREMENT;
+	}
+	// Update obstacles
+	for (var i = obstacles.length - 1; i >= 0; i--) {
+		var obs = obstacles[i];
+		obs.speed = currentSpeed;
+		obs.update();
+		// Remove if off screen
+		if (obs.y - obs.height / 2 > 2732) {
+			obs.destroy();
+			obstacles.splice(i, 1);
+			continue;
+		}
+		// Collision with player
+		if (obs.intersects(playerCar)) {
+			LK.effects.flashScreen(0xff0000, 800);
+			LK.showGameOver();
+			return;
+		}
+	}
+	// Update coins
+	for (var j = coins.length - 1; j >= 0; j--) {
+		var coin = coins[j];
+		coin.speed = currentSpeed;
+		coin.update();
+		// Remove if off screen
+		if (coin.y - coin.height / 2 > 2732) {
+			coin.destroy();
+			coins.splice(j, 1);
+			continue;
+		}
+		// Collect coin
+		if (coin.intersects(playerCar)) {
+			LK.setScore(LK.getScore() + 1);
+			scoreTxt.setText(LK.getScore());
+			// Animate coin
+			tween(coin, {
+				scaleX: 1.5,
+				scaleY: 1.5,
+				alpha: 0
+			}, {
+				duration: 200,
+				easing: tween.easeOut,
+				onFinish: function onFinish() {
+					coin.destroy();
+				}
+			});
+			coins.splice(j, 1);
+			continue;
+		}
+	}
+	// Spawn obstacles
+	if (LK.ticks - lastObstacleTick >= nextObstacleInterval) {
+		spawnObstacle();
+		lastObstacleTick = LK.ticks;
+		nextObstacleInterval = OBSTACLE_MIN_INTERVAL + Math.floor(Math.random() * (OBSTACLE_MAX_INTERVAL - OBSTACLE_MIN_INTERVAL));
+	}
+	// Spawn coins
+	if (LK.ticks - lastCoinTick >= nextCoinInterval) {
+		spawnCoin();
+		lastCoinTick = LK.ticks;
+		nextCoinInterval = COIN_MIN_INTERVAL + Math.floor(Math.random() * (COIN_MAX_INTERVAL - COIN_MIN_INTERVAL));
+	}
+};
+// Set initial score
+LK.setScore(0);
+scoreTxt.setText('0');
\ No newline at end of file