===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,192 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+// Player class: controllable character at the bottom
+var Player = Container.expand(function () {
+	var self = Container.call(this);
+	// Attach player asset (box, blue)
+	var playerAsset = self.attachAsset('playerBox', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	// Set initial size and color
+	playerAsset.width = 180;
+	playerAsset.height = 120;
+	playerAsset.color = 0x2a6cff;
+	// For collision, expose width/height
+	self.getWidth = function () {
+		return playerAsset.width;
+	};
+	self.getHeight = function () {
+		return playerAsset.height;
+	};
+	return self;
+});
+// Rock class: falling obstacles
+var Rock = Container.expand(function () {
+	var self = Container.call(this);
+	// Attach rock asset (ellipse, gray)
+	var rockAsset = self.attachAsset('rockEllipse', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	rockAsset.width = 140;
+	rockAsset.height = 110;
+	rockAsset.color = 0x888888;
+	// Speed will be set on spawn
+	self.speed = 6;
+	// For collision, expose width/height
+	self.getWidth = function () {
+		return rockAsset.width;
+	};
+	self.getHeight = function () {
+		return rockAsset.height;
+	};
+	// Update: move down
+	self.update = function () {
+		self.y += self.speed;
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
\ No newline at end of file
+	backgroundColor: 0x222222
+});
+
+/**** 
+* Game Code
+****/ 
+// Game area dimensions
+var GAME_W = 2048;
+var GAME_H = 2732;
+// Player setup
+var player = new Player();
+game.addChild(player);
+player.x = GAME_W / 2;
+player.y = GAME_H - 180;
+// Track dragging
+var dragPlayer = false;
+// Rocks array
+var rocks = [];
+// Timer and time left
+var GAME_DURATION = 20; // seconds
+var timeLeft = GAME_DURATION;
+var timerText = new Text2('20', {
+	size: 120,
+	fill: "#fff"
+});
+timerText.anchor.set(0.5, 0);
+LK.gui.top.addChild(timerText);
+// Difficulty progression
+var spawnInterval = 900; // ms, will decrease
+var minSpawnInterval = 320; // ms
+var spawnTimer = null;
+var lastSpawnTick = 0;
+var rockSpeed = 6;
+var maxRockSpeed = 32;
+// Helper: clamp
+function clamp(val, min, max) {
+	return Math.max(min, Math.min(max, val));
+}
+// Spawn a new rock at random x
+function spawnRock() {
+	var rock = new Rock();
+	// Random x, but keep fully inside screen
+	var margin = 80;
+	var rx = margin + Math.random() * (GAME_W - 2 * margin);
+	rock.x = rx;
+	rock.y = -rock.getHeight() / 2;
+	// Set speed based on current difficulty
+	rock.speed = rockSpeed + Math.random() * 2;
+	rocks.push(rock);
+	game.addChild(rock);
+}
+// Difficulty increases over time
+function updateDifficulty() {
+	// Progress: 0 at start, 1 at end
+	var progress = 1 - timeLeft / GAME_DURATION;
+	// Spawn interval decreases, speed increases
+	spawnInterval = clamp(900 - progress * 600, minSpawnInterval, 900);
+	rockSpeed = clamp(6 + progress * 18, 6, maxRockSpeed);
+}
+// Timer countdown
+var gameTimer = LK.setInterval(function () {
+	timeLeft -= 1;
+	if (timeLeft < 0) timeLeft = 0;
+	timerText.setText(timeLeft.toString());
+	if (timeLeft === 0) {
+		// Win!
+		LK.showYouWin();
+	}
+}, 1000);
+// Initial spawn
+spawnRock();
+lastSpawnTick = LK.ticks;
+// Main update loop
+game.update = function () {
+	// Difficulty progression
+	updateDifficulty();
+	// Spawn rocks at interval
+	if (LK.ticks - lastSpawnTick >= spawnInterval / 1000 * 60) {
+		spawnRock();
+		lastSpawnTick = LK.ticks;
+	}
+	// Update rocks, check for collision or out of bounds
+	for (var i = rocks.length - 1; i >= 0; i--) {
+		var rock = rocks[i];
+		rock.update();
+		// Out of screen
+		if (rock.y - rock.getHeight() / 2 > GAME_H + 40) {
+			rock.destroy();
+			rocks.splice(i, 1);
+			continue;
+		}
+		// Collision with player (AABB)
+		var dx = Math.abs(rock.x - player.x);
+		var dy = Math.abs(rock.y - player.y);
+		var overlapX = dx < rock.getWidth() / 2 + player.getWidth() / 2 - 10;
+		var overlapY = dy < rock.getHeight() / 2 + player.getHeight() / 2 - 10;
+		if (overlapX && overlapY) {
+			// Hit!
+			LK.effects.flashScreen(0xff0000, 800);
+			LK.showGameOver();
+			return;
+		}
+	}
+};
+// Touch/mouse controls: drag player left/right only
+game.down = function (x, y, obj) {
+	// Only start drag if touch is near player (vertical margin)
+	if (Math.abs(y - player.y) < 220) {
+		dragPlayer = true;
+		// Move player immediately
+		movePlayer(x);
+	}
+};
+game.move = function (x, y, obj) {
+	if (dragPlayer) {
+		movePlayer(x);
+	}
+};
+game.up = function (x, y, obj) {
+	dragPlayer = false;
+};
+// Move player horizontally, clamp to screen
+function movePlayer(x) {
+	var halfW = player.getWidth() / 2;
+	var minX = halfW + 40;
+	var maxX = GAME_W - halfW - 40;
+	player.x = clamp(x, minX, maxX);
+}
+// Center timer text at top, avoid top left 100x100
+timerText.x = LK.gui.top.width / 2;
+timerText.y = 20;
+// Asset initialization (shapes)
\ No newline at end of file