===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,197 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+// Collectible class
+var Collectible = Container.expand(function () {
+	var self = Container.call(this);
+	var colSprite = self.attachAsset('collectible', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 10; // Will be set dynamically
+	self.update = function () {
+		self.y += self.speed;
+	};
+	return self;
+});
+// Obstacle class
+var Obstacle = Container.expand(function () {
+	var self = Container.call(this);
+	var obsSprite = self.attachAsset('obstacle', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 12; // Will be set dynamically
+	self.update = function () {
+		self.y += self.speed;
+	};
+	return self;
+});
+// Player class
+var Player = Container.expand(function () {
+	var self = Container.call(this);
+	var playerSprite = self.attachAsset('player', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	// For collision, use the container itself
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
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+	backgroundColor: 0x181818
+});
+
+/**** 
+* Game Code
+****/ 
+// Collectible: gold ellipse
+// Obstacle: red ellipse
+// Player character: blue box
+// Game area: 2048x2732
+// Player start position: bottom center
+var player = new Player();
+player.x = 2048 / 2;
+player.y = 2732 - 220;
+game.addChild(player);
+// Score display
+var scoreTxt = new Text2('0', {
+	size: 120,
+	fill: 0xFFFFFF
+});
+scoreTxt.anchor.set(0.5, 0);
+LK.gui.top.addChild(scoreTxt);
+// Arrays for obstacles and collectibles
+var obstacles = [];
+var collectibles = [];
+// Difficulty variables
+var obstacleInterval = 60; // ticks between obstacles
+var collectibleInterval = 180; // ticks between collectibles
+var minObstacleInterval = 20;
+var minCollectibleInterval = 80;
+var obstacleSpeed = 12;
+var collectibleSpeed = 10;
+var maxObstacleSpeed = 32;
+var maxCollectibleSpeed = 24;
+var ticksSinceLastObstacle = 0;
+var ticksSinceLastCollectible = 0;
+var difficultyTimer = 0;
+// Dragging
+var dragNode = null;
+// For collision detection
+var lastPlayerHit = false;
+// Move handler for dragging player
+function handleMove(x, y, obj) {
+	if (dragNode) {
+		// Clamp player within game area
+		var px = Math.max(player.width / 2, Math.min(2048 - player.width / 2, x));
+		var py = Math.max(player.height / 2 + 100, Math.min(2732 - player.height / 2, y));
+		player.x = px;
+		player.y = py;
+	}
+}
+game.move = handleMove;
+game.down = function (x, y, obj) {
+	// Only start drag if touch is on player
+	var local = player.toLocal(game.toGlobal({
+		x: x,
+		y: y
+	}));
+	if (Math.abs(local.x) <= player.width / 2 && Math.abs(local.y) <= player.height / 2) {
+		dragNode = player;
+		handleMove(x, y, obj);
+	}
+};
+game.up = function (x, y, obj) {
+	dragNode = null;
+};
+// Main game update loop
+game.update = function () {
+	// Difficulty increases over time
+	difficultyTimer++;
+	if (difficultyTimer % 300 === 0) {
+		// every 5 seconds
+		if (obstacleInterval > minObstacleInterval) obstacleInterval -= 4;
+		if (collectibleInterval > minCollectibleInterval) collectibleInterval -= 4;
+		if (obstacleSpeed < maxObstacleSpeed) obstacleSpeed += 1.5;
+		if (collectibleSpeed < maxCollectibleSpeed) collectibleSpeed += 1;
+	}
+	// Spawn obstacles
+	ticksSinceLastObstacle++;
+	if (ticksSinceLastObstacle >= obstacleInterval) {
+		ticksSinceLastObstacle = 0;
+		var obs = new Obstacle();
+		obs.x = Math.random() * (2048 - 180) + 90;
+		obs.y = -80;
+		obs.speed = obstacleSpeed + Math.random() * 2;
+		obstacles.push(obs);
+		game.addChild(obs);
+	}
+	// Spawn collectibles
+	ticksSinceLastCollectible++;
+	if (ticksSinceLastCollectible >= collectibleInterval) {
+		ticksSinceLastCollectible = 0;
+		var col = new Collectible();
+		col.x = Math.random() * (2048 - 140) + 70;
+		col.y = -60;
+		col.speed = collectibleSpeed + Math.random() * 2;
+		collectibles.push(col);
+		game.addChild(col);
+	}
+	// Update obstacles
+	for (var i = obstacles.length - 1; i >= 0; i--) {
+		var obs = obstacles[i];
+		obs.update();
+		// Remove if off screen
+		if (obs.y - obs.height / 2 > 2732 + 40) {
+			obs.destroy();
+			obstacles.splice(i, 1);
+			continue;
+		}
+		// Collision with player
+		var hit = player.intersects(obs);
+		if (!lastPlayerHit && hit) {
+			// Flash screen red
+			LK.effects.flashScreen(0xff0000, 800);
+			// Game over
+			LK.showGameOver();
+			return;
+		}
+		lastPlayerHit = hit;
+	}
+	// Update collectibles
+	for (var j = collectibles.length - 1; j >= 0; j--) {
+		var col = collectibles[j];
+		col.update();
+		// Remove if off screen
+		if (col.y - col.height / 2 > 2732 + 40) {
+			col.destroy();
+			collectibles.splice(j, 1);
+			continue;
+		}
+		// Collision with player
+		if (player.intersects(col)) {
+			// Add score
+			LK.setScore(LK.getScore() + 5);
+			scoreTxt.setText(LK.getScore());
+			// Flash collectible
+			LK.effects.flashObject(col, 0xffffff, 200);
+			col.destroy();
+			collectibles.splice(j, 1);
+			continue;
+		}
+	}
+	// Update score display
+	scoreTxt.setText(LK.getScore());
+};
+// Reset score on game start
+LK.setScore(0);
+scoreTxt.setText('0');
\ No newline at end of file