===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,233 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+var Bike = Container.expand(function () {
+	var self = Container.call(this);
+	var bikeBody = self.attachAsset('bike', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	var frontWheel = self.attachAsset('wheel', {
+		anchorX: 0.5,
+		anchorY: 0.5,
+		x: 25,
+		y: 15
+	});
+	var backWheel = self.attachAsset('wheel', {
+		anchorX: 0.5,
+		anchorY: 0.5,
+		x: -25,
+		y: 15
+	});
+	self.velocityY = 0;
+	self.gravity = 0.8;
+	self.jumpPower = -18;
+	self.isGrounded = false;
+	self.groundY = 0;
+	self.jump = function () {
+		if (self.isGrounded) {
+			self.velocityY = self.jumpPower;
+			self.isGrounded = false;
+			LK.getSound('jump').play();
+		}
+	};
+	self.update = function () {
+		// Apply gravity
+		self.velocityY += self.gravity;
+		self.y += self.velocityY;
+		// Ground collision
+		if (self.y >= self.groundY) {
+			self.y = self.groundY;
+			self.velocityY = 0;
+			self.isGrounded = true;
+		}
+		// Animate wheels
+		frontWheel.rotation += 0.3;
+		backWheel.rotation += 0.3;
+		// Bike tilt based on velocity
+		bikeBody.rotation = self.velocityY * 0.02;
+	};
+	return self;
+});
+var GroundSegment = Container.expand(function () {
+	var self = Container.call(this);
+	var groundGraphics = self.attachAsset('ground', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = -8;
+	self.update = function () {
+		self.x += self.speed;
+	};
+	return self;
+});
+var Obstacle = Container.expand(function () {
+	var self = Container.call(this);
+	var obstacleGraphics = self.attachAsset('obstacle', {
+		anchorX: 0.5,
+		anchorY: 1
+	});
+	self.speed = -8;
+	self.update = function () {
+		self.x += self.speed;
+	};
+	return self;
+});
+var Ramp = Container.expand(function () {
+	var self = Container.call(this);
+	var rampGraphics = self.attachAsset('ramp', {
+		anchorX: 0.5,
+		anchorY: 1
+	});
+	self.speed = -8;
+	self.update = function () {
+		self.x += self.speed;
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
\ No newline at end of file
+	backgroundColor: 0x87CEEB
+});
+
+/**** 
+* Game Code
+****/ 
+var bike;
+var obstacles = [];
+var ramps = [];
+var groundSegments = [];
+var gameSpeed = 8;
+var distanceScore = 0;
+var isGameRunning = true;
+var groundLevel = 2400;
+var lastObstacleSpawn = 0;
+var spawnDistance = 300;
+// Create score display
+var scoreTxt = new Text2('Distance: 0', {
+	size: 80,
+	fill: 0xFFFFFF
+});
+scoreTxt.anchor.set(0.5, 0);
+LK.gui.top.addChild(scoreTxt);
+// Create bike
+bike = game.addChild(new Bike());
+bike.x = 400;
+bike.y = groundLevel;
+bike.groundY = groundLevel;
+// Initialize ground segments
+function createGroundSegments() {
+	for (var i = 0; i < 15; i++) {
+		var segment = new GroundSegment();
+		segment.x = i * 200;
+		segment.y = groundLevel + 40;
+		groundSegments.push(segment);
+		game.addChild(segment);
+	}
+}
+createGroundSegments();
+// Spawn obstacle
+function spawnObstacle() {
+	var obstacle = new Obstacle();
+	obstacle.x = 2200;
+	obstacle.y = groundLevel;
+	obstacle.speed = -gameSpeed;
+	obstacles.push(obstacle);
+	game.addChild(obstacle);
+}
+// Spawn ramp
+function spawnRamp() {
+	var ramp = new Ramp();
+	ramp.x = 2200;
+	ramp.y = groundLevel;
+	ramp.speed = -gameSpeed;
+	ramps.push(ramp);
+	game.addChild(ramp);
+}
+// Game input
+game.down = function (x, y, obj) {
+	if (isGameRunning) {
+		bike.jump();
+	}
+};
+// Main game loop
+game.update = function () {
+	if (!isGameRunning) return;
+	// Update distance score
+	distanceScore += 1;
+	LK.setScore(Math.floor(distanceScore / 10));
+	scoreTxt.setText('Distance: ' + Math.floor(distanceScore / 10));
+	// Increase game speed gradually
+	if (LK.ticks % 300 === 0) {
+		gameSpeed += 0.5;
+	}
+	// Update ground segments
+	for (var i = groundSegments.length - 1; i >= 0; i--) {
+		var segment = groundSegments[i];
+		segment.speed = -gameSpeed;
+		if (segment.x < -200) {
+			segment.x = (groundSegments.length - 1) * 200;
+		}
+	}
+	// Spawn obstacles and ramps
+	if (distanceScore - lastObstacleSpawn > spawnDistance) {
+		if (Math.random() < 0.7) {
+			spawnObstacle();
+		} else {
+			spawnRamp();
+		}
+		lastObstacleSpawn = distanceScore;
+		spawnDistance = 200 + Math.random() * 200;
+	}
+	// Update obstacles
+	for (var i = obstacles.length - 1; i >= 0; i--) {
+		var obstacle = obstacles[i];
+		obstacle.speed = -gameSpeed;
+		// Remove off-screen obstacles
+		if (obstacle.x < -100) {
+			obstacle.destroy();
+			obstacles.splice(i, 1);
+			continue;
+		}
+		// Collision detection
+		if (bike.intersects(obstacle)) {
+			// Game over
+			isGameRunning = false;
+			LK.getSound('crash').play();
+			LK.effects.flashScreen(0xff0000, 1000);
+			LK.showGameOver();
+			return;
+		}
+	}
+	// Update ramps
+	for (var i = ramps.length - 1; i >= 0; i--) {
+		var ramp = ramps[i];
+		ramp.speed = -gameSpeed;
+		// Remove off-screen ramps
+		if (ramp.x < -100) {
+			ramp.destroy();
+			ramps.splice(i, 1);
+			continue;
+		}
+		// Ramp boost effect
+		if (bike.intersects(ramp) && bike.isGrounded) {
+			bike.velocityY = bike.jumpPower * 1.2;
+			bike.isGrounded = false;
+		}
+	}
+	// Check if bike fell off the track
+	if (bike.y > groundLevel + 200) {
+		isGameRunning = false;
+		LK.getSound('crash').play();
+		LK.effects.flashScreen(0xff0000, 1000);
+		LK.showGameOver();
+	}
+};
\ No newline at end of file