===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,234 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+// Enemy Car Class
+var EnemyCar = Container.expand(function () {
+	var self = Container.call(this);
+	var car = self.attachAsset('enemyCar', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	// Lane index (0,1,2)
+	self.lane = 1;
+	// Speed in px per frame
+	self.speed = 12;
+	// Update method called by LK
+	self.update = function () {
+		self.y += self.speed * gameSpeed;
+	};
+	return self;
+});
+// Obstacle Class
+var Obstacle = Container.expand(function () {
+	var self = Container.call(this);
+	var obs = self.attachAsset('obstacle', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	// Lane index (0,1,2)
+	self.lane = 1;
+	// Speed in px per frame
+	self.speed = 12;
+	self.update = function () {
+		self.y += self.speed * gameSpeed;
+	};
+	return self;
+});
+// Player Car Class
+var PlayerCar = Container.expand(function () {
+	var self = Container.call(this);
+	var car = self.attachAsset('playerCar', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	// Current lane index (0 = left, 1 = center, 2 = right)
+	self.lane = 1;
+	// Move to lane with animation
+	self.moveToLane = function (laneIndex, duration) {
+		self.lane = laneIndex;
+		var targetX = getLaneX(laneIndex);
+		tween(self, {
+			x: targetX
+		}, {
+			duration: duration || 120,
+			easing: tween.cubicOut
+		});
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
\ No newline at end of file
+	backgroundColor: 0x222222
+});
+
+/**** 
+* Game Code
+****/ 
+// Obstacle: yellow ellipse (e.g. traffic cone)
+// Enemy car: red box
+// Player car: blue box
+// Lane setup
+var NUM_LANES = 3;
+var laneWidth = 410; // 2048 / 5 = ~410, leaves margin on sides
+var laneMargin = (2048 - NUM_LANES * laneWidth) / 2; // Center lanes
+function getLaneX(laneIndex) {
+	// Center of each lane
+	return laneMargin + laneWidth * laneIndex + laneWidth / 2;
+}
+// Player car setup
+var playerCar = new PlayerCar();
+playerCar.x = getLaneX(1);
+playerCar.y = 2732 - 350;
+playerCar.lane = 1;
+game.addChild(playerCar);
+// Score display
+var score = 0;
+var scoreTxt = new Text2('0', {
+	size: 120,
+	fill: 0xFFFFFF
+});
+scoreTxt.anchor.set(0.5, 0);
+LK.gui.top.addChild(scoreTxt);
+// Game speed
+var gameSpeed = 1.0;
+var speedIncreaseInterval = 180; // every 3 seconds at 60fps
+var speedIncreaseAmount = 0.08;
+var maxGameSpeed = 2.8;
+// Enemy/obstacle spawn
+var enemyCars = [];
+var obstacles = [];
+var spawnTimer = 0;
+var spawnInterval = 60; // frames between spawns (1 sec at 60fps), will decrease as speed increases
+var minSpawnInterval = 24; // fastest spawn rate
+// Touch/swipe handling
+var dragStartX = null;
+var dragStartY = null;
+var dragActive = false;
+var swipeThreshold = 80; // px
+// Prevent input in top-left 100x100
+function isInMenuArea(x, y) {
+	return x < 100 && y < 100;
+}
+// Touch down
+game.down = function (x, y, obj) {
+	if (isInMenuArea(x, y)) return;
+	dragStartX = x;
+	dragStartY = y;
+	dragActive = true;
+};
+// Touch up
+game.up = function (x, y, obj) {
+	dragStartX = null;
+	dragStartY = null;
+	dragActive = false;
+};
+// Touch move (swipe detection)
+game.move = function (x, y, obj) {
+	if (!dragActive || dragStartX === null) return;
+	var dx = x - dragStartX;
+	var dy = y - dragStartY;
+	// Only consider horizontal swipes, ignore vertical
+	if (Math.abs(dx) > Math.abs(dy) && Math.abs(dx) > swipeThreshold) {
+		if (dx < 0 && playerCar.lane > 0) {
+			// Swipe left
+			playerCar.moveToLane(playerCar.lane - 1);
+		} else if (dx > 0 && playerCar.lane < NUM_LANES - 1) {
+			// Swipe right
+			playerCar.moveToLane(playerCar.lane + 1);
+		}
+		dragActive = false; // Only one move per swipe
+	}
+};
+// Helper: spawn enemy or obstacle
+function spawnEnemyOrObstacle() {
+	// Randomly decide: 70% enemy car, 30% obstacle
+	var isEnemy = Math.random() < 0.7;
+	var lane = Math.floor(Math.random() * NUM_LANES);
+	if (isEnemy) {
+		var enemy = new EnemyCar();
+		enemy.lane = lane;
+		enemy.x = getLaneX(lane);
+		enemy.y = -200;
+		enemyCars.push(enemy);
+		game.addChild(enemy);
+	} else {
+		var obs = new Obstacle();
+		obs.lane = lane;
+		obs.x = getLaneX(lane);
+		obs.y = -120;
+		obstacles.push(obs);
+		game.addChild(obs);
+	}
+}
+// Main game update
+game.update = function () {
+	// Increase game speed over time
+	if (LK.ticks % speedIncreaseInterval === 0 && gameSpeed < maxGameSpeed) {
+		gameSpeed += speedIncreaseAmount;
+		if (gameSpeed > maxGameSpeed) gameSpeed = maxGameSpeed;
+		// Decrease spawn interval as speed increases
+		spawnInterval = Math.max(minSpawnInterval, 60 - Math.floor((gameSpeed - 1) * 18));
+	}
+	// Spawn enemies/obstacles
+	spawnTimer++;
+	if (spawnTimer >= spawnInterval) {
+		spawnEnemyOrObstacle();
+		spawnTimer = 0;
+	}
+	// Update enemy cars
+	for (var i = enemyCars.length - 1; i >= 0; i--) {
+		var enemy = enemyCars[i];
+		enemy.update();
+		// Collision detection
+		if (enemy.intersects(playerCar)) {
+			LK.effects.flashScreen(0xff0000, 800);
+			LK.showGameOver();
+			return;
+		}
+		// Passed player (score)
+		if (!enemy.passed && enemy.y > playerCar.y + 200) {
+			enemy.passed = true;
+			score++;
+			scoreTxt.setText(score);
+		}
+		// Remove off-screen
+		if (enemy.y > 2900) {
+			enemy.destroy();
+			enemyCars.splice(i, 1);
+		}
+	}
+	// Update obstacles
+	for (var j = obstacles.length - 1; j >= 0; j--) {
+		var obs = obstacles[j];
+		obs.update();
+		// Collision detection
+		if (obs.intersects(playerCar)) {
+			LK.effects.flashScreen(0xff0000, 800);
+			LK.showGameOver();
+			return;
+		}
+		// Passed player (score)
+		if (!obs.passed && obs.y > playerCar.y + 200) {
+			obs.passed = true;
+			score++;
+			scoreTxt.setText(score);
+		}
+		// Remove off-screen
+		if (obs.y > 2900) {
+			obs.destroy();
+			obstacles.splice(j, 1);
+		}
+	}
+};
+// Center score text horizontally
+scoreTxt.setText(score);
+scoreTxt.anchor.set(0.5, 0);
+// Play music (if any, not specified in MVP)
\ No newline at end of file