===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,144 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+var Dinosaur = Container.expand(function () {
+	var self = Container.call(this);
+	var dinoGraphics = self.attachAsset('dino', {
+		anchorX: 0.5,
+		anchorY: 1.0
+	});
+	self.isJumping = false;
+	self.jumpPower = 0;
+	self.gravity = 1.2;
+	self.groundY = 0;
+	self.jump = function () {
+		if (!self.isJumping) {
+			self.isJumping = true;
+			self.jumpPower = -20;
+			LK.getSound('jump').play();
+		}
+	};
+	self.update = function () {
+		if (self.isJumping) {
+			self.jumpPower += self.gravity;
+			self.y += self.jumpPower;
+			if (self.y >= self.groundY) {
+				self.y = self.groundY;
+				self.isJumping = false;
+				self.jumpPower = 0;
+			}
+		}
+	};
+	return self;
+});
+var Obstacle = Container.expand(function () {
+	var self = Container.call(this);
+	var cactusGraphics = self.attachAsset('cactus', {
+		anchorX: 0.5,
+		anchorY: 1.0
+	});
+	self.speed = gameSpeed;
+	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 gameSpeed = 8;
+var obstacles = [];
+var spawnTimer = 0;
+var spawnInterval = 90;
+var speedIncreaseTimer = 0;
+var distanceScore = 0;
+// Create ground
+var ground = game.addChild(LK.getAsset('ground', {
+	anchorX: 0,
+	anchorY: 0,
+	x: 0,
+	y: 2600
+}));
+// Create dinosaur
+var dinosaur = game.addChild(new Dinosaur());
+dinosaur.x = 300;
+dinosaur.y = 2600;
+dinosaur.groundY = 2600;
+// Create score display
+var scoreTxt = new Text2('0', {
+	size: 80,
+	fill: 0x000000
+});
+scoreTxt.anchor.set(0, 0);
+LK.gui.topLeft.addChild(scoreTxt);
+scoreTxt.x = 120;
+scoreTxt.y = 50;
+// Touch controls
+game.down = function (x, y, obj) {
+	dinosaur.jump();
+};
+// Main game update
+game.update = function () {
+	// Update distance score
+	distanceScore += 1;
+	LK.setScore(Math.floor(distanceScore / 10));
+	scoreTxt.setText('Score: ' + LK.getScore());
+	// Increase game speed over time
+	speedIncreaseTimer++;
+	if (speedIncreaseTimer >= 300) {
+		// Every 5 seconds
+		gameSpeed += 0.5;
+		speedIncreaseTimer = 0;
+	}
+	// Spawn obstacles
+	spawnTimer++;
+	if (spawnTimer >= spawnInterval) {
+		var obstacle = new Obstacle();
+		obstacle.x = 2200;
+		obstacle.y = 2600;
+		obstacle.speed = gameSpeed;
+		obstacles.push(obstacle);
+		game.addChild(obstacle);
+		spawnTimer = 0;
+		// Randomize next spawn interval
+		spawnInterval = 60 + Math.random() * 80;
+	}
+	// Update and check obstacles
+	for (var i = obstacles.length - 1; i >= 0; i--) {
+		var obstacle = obstacles[i];
+		// Track last position for collision detection
+		if (obstacle.lastX === undefined) obstacle.lastX = obstacle.x;
+		if (obstacle.lastColliding === undefined) obstacle.lastColliding = false;
+		// Remove obstacles that are off screen
+		if (obstacle.lastX >= -50 && obstacle.x < -50) {
+			obstacle.destroy();
+			obstacles.splice(i, 1);
+			continue;
+		}
+		// Check collision with dinosaur
+		var currentColliding = obstacle.intersects(dinosaur);
+		if (!obstacle.lastColliding && currentColliding) {
+			// Collision detected - game over
+			LK.getSound('hit').play();
+			LK.effects.flashScreen(0xFF0000, 500);
+			LK.showGameOver();
+			return;
+		}
+		// Update last known states
+		obstacle.lastX = obstacle.x;
+		obstacle.lastColliding = currentColliding;
+	}
+};
\ No newline at end of file