===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,204 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+var Bird = Container.expand(function () {
+	var self = Container.call(this);
+	var birdGraphics = self.attachAsset('bird', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.velocityY = 0;
+	self.gravity = 0.8;
+	self.flapPower = -12;
+	self.rotation = 0;
+	self.rotationVelocity = 0;
+	self.isFlipping = false;
+	self.completedFlips = 0;
+	self.lastUpright = true;
+	self.flap = function () {
+		self.velocityY = self.flapPower;
+		self.rotationVelocity = 0.3;
+		self.isFlipping = true;
+		LK.getSound('flap').play();
+	};
+	self.update = function () {
+		// Apply gravity
+		self.velocityY += self.gravity;
+		self.y += self.velocityY;
+		// Apply rotation
+		if (self.isFlipping) {
+			self.rotation += self.rotationVelocity;
+			self.rotationVelocity *= 0.98; // Slow down rotation
+			// Check if completed a full rotation
+			if (self.rotation >= Math.PI * 2) {
+				self.completedFlips++;
+				self.rotation = 0;
+				self.isFlipping = false;
+			}
+		}
+		birdGraphics.rotation = self.rotation;
+		// Keep bird in bounds horizontally
+		if (self.x < 40) self.x = 40;
+		if (self.x > 2008) self.x = 2008;
+	};
+	self.isUpright = function () {
+		var normalizedRotation = self.rotation % (Math.PI * 2);
+		return normalizedRotation < 0.3 || normalizedRotation > Math.PI * 2 - 0.3;
+	};
+	return self;
+});
+var Obstacle = Container.expand(function () {
+	var self = Container.call(this);
+	var obstacleGraphics = self.attachAsset('obstacle', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = -3;
+	self.passed = false;
+	self.update = function () {
+		self.x += self.speed;
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
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+	backgroundColor: 0x87CEEB
+});
+
+/**** 
+* Game Code
+****/ 
+var bird;
+var obstacles = [];
+var ground;
+var gameStarted = false;
+var lastObstacle = 0;
+var obstacleSpacing = 400;
+// Create score display
+var scoreTxt = new Text2('0', {
+	size: 80,
+	fill: 0xFFFFFF
+});
+scoreTxt.anchor.set(0.5, 0);
+LK.gui.top.addChild(scoreTxt);
+scoreTxt.y = 100;
+// Create instructions
+var instructionTxt = new Text2('TAP TO FLIP AND FLY\nLAND UPRIGHT TO SCORE!', {
+	size: 60,
+	fill: 0xFFFFFF
+});
+instructionTxt.anchor.set(0.5, 0.5);
+game.addChild(instructionTxt);
+instructionTxt.x = 1024;
+instructionTxt.y = 1000;
+// Create ground
+ground = game.addChild(LK.getAsset('ground', {
+	anchorX: 0,
+	anchorY: 0
+}));
+ground.x = 0;
+ground.y = 2632;
+// Create bird
+bird = game.addChild(new Bird());
+bird.x = 300;
+bird.y = 1366;
+function startGame() {
+	if (!gameStarted) {
+		gameStarted = true;
+		game.removeChild(instructionTxt);
+	}
+}
+function createObstacle() {
+	var obstacle = new Obstacle();
+	obstacle.x = 2148;
+	// Random height for obstacle
+	var minHeight = 200;
+	var maxHeight = 600;
+	obstacle.y = Math.random() * (maxHeight - minHeight) + minHeight;
+	obstacles.push(obstacle);
+	game.addChild(obstacle);
+	lastObstacle = LK.ticks;
+}
+function checkCollisions() {
+	// Check ground collision
+	if (bird.y + 30 >= ground.y) {
+		if (!bird.isUpright()) {
+			LK.showGameOver();
+			return;
+		} else {
+			// Successful landing - award points
+			if (bird.completedFlips > 0) {
+				LK.setScore(LK.getScore() + bird.completedFlips);
+				scoreTxt.setText(LK.getScore());
+				LK.getSound('score').play();
+				bird.completedFlips = 0;
+				// Bounce back up
+				bird.velocityY = -8;
+				bird.y = ground.y - 30;
+			}
+		}
+	}
+	// Check obstacle collisions
+	for (var i = obstacles.length - 1; i >= 0; i--) {
+		var obstacle = obstacles[i];
+		if (bird.intersects(obstacle)) {
+			LK.showGameOver();
+			return;
+		}
+		// Check if bird passed obstacle
+		if (!obstacle.passed && obstacle.x + 50 < bird.x) {
+			obstacle.passed = true;
+			if (bird.isUpright() && bird.completedFlips > 0) {
+				LK.setScore(LK.getScore() + 1);
+				scoreTxt.setText(LK.getScore());
+				LK.getSound('score').play();
+			}
+		}
+		// Remove off-screen obstacles
+		if (obstacle.x < -100) {
+			obstacle.destroy();
+			obstacles.splice(i, 1);
+		}
+	}
+	// Check ceiling collision
+	if (bird.y < 50) {
+		bird.y = 50;
+		bird.velocityY = 0;
+	}
+}
+game.down = function (x, y, obj) {
+	if (!gameStarted) {
+		startGame();
+	}
+	bird.flap();
+};
+game.update = function () {
+	if (!gameStarted) return;
+	// Create obstacles
+	if (LK.ticks - lastObstacle > obstacleSpacing) {
+		createObstacle();
+	}
+	// Update bird physics
+	bird.update();
+	// Update obstacles
+	for (var i = 0; i < obstacles.length; i++) {
+		obstacles[i].update();
+	}
+	// Check collisions
+	checkCollisions();
+	// Increase difficulty over time
+	if (LK.getScore() > 10) {
+		obstacleSpacing = 350;
+	}
+	if (LK.getScore() > 20) {
+		obstacleSpacing = 300;
+	}
+};
\ No newline at end of file