===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,229 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+// Obstacle (coral/rock) class
+var Obstacle = Container.expand(function () {
+	var self = Container.call(this);
+	// Top or bottom
+	self.isTop = false;
+	self.passed = false;
+	// Attach asset
+	var obs = self.attachAsset('obstacle', {
+		anchorX: 0.5,
+		anchorY: 0.0
+	});
+	// For top obstacles, flip vertically
+	self.setTop = function () {
+		self.isTop = true;
+		obs.scaleY = -1;
+		obs.anchorY = 1.0;
+	};
+	// Move left every frame
+	self.update = function () {
+		self.x -= obstacleSpeed;
+	};
+	return self;
+});
+// Penguin class
+var Penguin = Container.expand(function () {
+	var self = Container.call(this);
+	var penguinSprite = self.attachAsset('penguin', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.velocity = 0;
+	self.gravity = 2.2;
+	self.lift = -48;
+	self.maxFall = 36;
+	self.alive = true;
+	// Flap animation
+	self.flap = function () {
+		if (!self.alive) return;
+		self.velocity = self.lift;
+		// Animate penguin up a bit
+		tween(self, {
+			rotation: -0.35
+		}, {
+			duration: 120,
+			easing: tween.cubicOut
+		});
+	};
+	// Call every frame
+	self.update = function () {
+		if (!self.alive) return;
+		self.velocity += self.gravity;
+		if (self.velocity > self.maxFall) self.velocity = self.maxFall;
+		self.y += self.velocity;
+		// Rotate penguin based on velocity
+		var targetRot = Math.max(-0.4, Math.min(0.7, self.velocity / 50));
+		tween(self, {
+			rotation: targetRot
+		}, {
+			duration: 120,
+			easing: tween.linear
+		});
+	};
+	// On death
+	self.die = function () {
+		self.alive = false;
+		tween(self, {
+			rotation: 1.2
+		}, {
+			duration: 400,
+			easing: tween.cubicIn
+		});
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
\ No newline at end of file
+	backgroundColor: 0x6ec6f7
+});
+
+/**** 
+* Game Code
+****/ 
+// Background (ocean blue, for parallax effect)
+// Sea floor/ceiling
+// Obstacle (coral/rock) - top and bottom
+// Penguin (player)
+// Game constants
+var GAP_SIZE = 420; // Gap between top and bottom obstacles
+var OBSTACLE_INTERVAL = 60; // Frames between obstacles
+var obstacleSpeed = 18;
+var penguinStartX = 600;
+var penguinStartY = 1366;
+var floorY = 2732 - 80;
+var ceilingY = 80;
+// Background
+var bg = LK.getAsset('bgwave', {
+	anchorX: 0,
+	anchorY: 0,
+	x: 0,
+	y: 0
+});
+game.addChild(bg);
+// Sea floor
+var floor = LK.getAsset('seabound', {
+	anchorX: 0,
+	anchorY: 0,
+	x: 0,
+	y: floorY
+});
+game.addChild(floor);
+// Sea ceiling
+var ceiling = LK.getAsset('seabound', {
+	anchorX: 0,
+	anchorY: 0,
+	x: 0,
+	y: 0
+});
+game.addChild(ceiling);
+// Penguin
+var penguin = new Penguin();
+penguin.x = penguinStartX;
+penguin.y = penguinStartY;
+game.addChild(penguin);
+// Obstacles array
+var obstacles = [];
+// Score
+var score = 0;
+var scoreTxt = new Text2('0', {
+	size: 150,
+	fill: 0xFFFFFF
+});
+scoreTxt.anchor.set(0.5, 0);
+LK.gui.top.addChild(scoreTxt);
+// Drag/tap handler
+var gameStarted = false;
+var gameOver = false;
+// Start the game on first tap
+function startGame() {
+	if (!gameStarted) {
+		gameStarted = true;
+	}
+	penguin.flap();
+}
+// Touch/click events
+game.down = function (x, y, obj) {
+	if (gameOver) return;
+	startGame();
+};
+// No drag, so no move/up needed
+// Main update loop
+game.update = function () {
+	if (gameOver) return;
+	// Penguin physics
+	penguin.update();
+	// Prevent penguin from going off top/ceiling
+	if (penguin.y - 60 < ceilingY) {
+		penguin.y = ceilingY + 60;
+		penguin.velocity = 0;
+	}
+	// Prevent penguin from going below floor
+	if (penguin.y + 60 > floorY) {
+		penguin.y = floorY - 60;
+		penguin.velocity = 0;
+		penguin.die();
+		endGame();
+		return;
+	}
+	// Spawn obstacles
+	if (gameStarted && LK.ticks % OBSTACLE_INTERVAL === 0) {
+		var gapY = Math.floor(ceilingY + 200 + Math.random() * (floorY - ceilingY - GAP_SIZE - 400));
+		// Top obstacle
+		var topObs = new Obstacle();
+		topObs.setTop();
+		topObs.x = 2048 + 90;
+		topObs.y = gapY - GAP_SIZE / 2;
+		obstacles.push(topObs);
+		game.addChild(topObs);
+		// Bottom obstacle
+		var botObs = new Obstacle();
+		botObs.x = 2048 + 90;
+		botObs.y = gapY + GAP_SIZE / 2;
+		obstacles.push(botObs);
+		game.addChild(botObs);
+	}
+	// Move and manage obstacles
+	for (var i = obstacles.length - 1; i >= 0; i--) {
+		var obs = obstacles[i];
+		obs.update();
+		// Remove if off screen
+		if (obs.x < -200) {
+			obs.destroy();
+			obstacles.splice(i, 1);
+			continue;
+		}
+		// Collision with penguin
+		if (penguin.alive && penguin.intersects(obs)) {
+			penguin.die();
+			endGame();
+			return;
+		}
+		// Score: Only count bottom obstacles, and only once per pair
+		if (!obs.isTop && !obs.passed && obs.x + 90 < penguin.x) {
+			obs.passed = true;
+			score += 1;
+			scoreTxt.setText(score);
+		}
+	}
+};
+// End game
+function endGame() {
+	gameOver = true;
+	// Flash red
+	LK.effects.flashScreen(0xff0000, 800);
+	// Show game over popup
+	LK.setTimeout(function () {
+		LK.showGameOver();
+	}, 800);
+}
\ No newline at end of file