===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,302 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+// BingoCell: Represents a single cell on the bingo card
+var BingoCell = Container.expand(function () {
+	var self = Container.call(this);
+	// Properties
+	self.number = 0;
+	self.marked = false;
+	// Create cell background
+	var cellBg = self.attachAsset('bingoCellBg', {
+		width: cellSize,
+		height: cellSize,
+		color: 0xffffff,
+		shape: 'box',
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	// Number text
+	var numberText = new Text2('', {
+		size: Math.floor(cellSize * 0.45),
+		fill: 0x222222
+	});
+	numberText.anchor.set(0.5, 0.5);
+	self.addChild(numberText);
+	// Mark overlay (hidden by default)
+	var markOverlay = self.attachAsset('bingoMark', {
+		width: cellSize * 0.7,
+		height: cellSize * 0.7,
+		color: 0x4caf50,
+		shape: 'ellipse',
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	markOverlay.alpha = 0;
+	self.markOverlay = markOverlay;
+	// Set number and update text
+	self.setNumber = function (num) {
+		self.number = num;
+		numberText.setText(num > 0 ? num : '');
+	};
+	// Mark/unmark cell
+	self.setMarked = function (val) {
+		self.marked = val;
+		if (val) {
+			tween(markOverlay, {
+				alpha: 0.7
+			}, {
+				duration: 200,
+				easing: tween.easeOut
+			});
+			numberText.setText(self.number);
+			numberText.style.fill = "#ffffff";
+		} else {
+			tween(markOverlay, {
+				alpha: 0
+			}, {
+				duration: 200,
+				easing: tween.easeOut
+			});
+			numberText.style.fill = "#222222";
+		}
+	};
+	// Touch event
+	self.down = function (x, y, obj) {
+		if (self.marked) return;
+		if (game.state !== 'playing') return;
+		if (self.number === game.currentNumber) {
+			self.setMarked(true);
+			LK.effects.flashObject(self, 0x4caf50, 200);
+			game.checkWin();
+		} else {
+			LK.effects.flashObject(self, 0xff0000, 200);
+		}
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
\ No newline at end of file
+	backgroundColor: 0x1a237e
+});
+
+/**** 
+* Game Code
+****/ 
+// --- Config ---
+var gridSize = 5; // 5x5 bingo
+var cellSize = 300; // px, will be scaled to fit
+var cardPadding = 30;
+var cardWidth = gridSize * cellSize;
+var cardHeight = gridSize * cellSize;
+var cardStartX = (2048 - cardWidth) / 2;
+var cardStartY = 400;
+var callIntervalStart = 2000; // ms
+var callIntervalMin = 800; // ms
+var callIntervalStep = 100; // ms, decrease per call
+var gameDuration = 60000; // ms (1 min)
+var numbersRange = 75; // 1-75
+// --- State ---
+var bingoCells = [];
+var calledNumbers = [];
+var availableNumbers = [];
+var callTimer = null;
+var timeLeft = gameDuration;
+var timerInterval = null;
+var cardNumbers = [];
+var gameOver = false;
+// --- UI Elements ---
+var numberCallText = new Text2('', {
+	size: 180,
+	fill: 0xFFD600
+});
+numberCallText.anchor.set(0.5, 0.5);
+numberCallText.x = 2048 / 2;
+numberCallText.y = 220;
+game.addChild(numberCallText);
+var timerText = new Text2('', {
+	size: 90,
+	fill: 0xFFFFFF
+});
+timerText.anchor.set(0.5, 0);
+LK.gui.top.addChild(timerText);
+var winText = new Text2('', {
+	size: 120,
+	fill: 0x4CAF50
+});
+winText.anchor.set(0.5, 0.5);
+winText.x = 2048 / 2;
+winText.y = 2732 / 2;
+winText.visible = false;
+game.addChild(winText);
+// --- Functions ---
+// Generate a random bingo card (5x5, center is free)
+function generateCardNumbers() {
+	var nums = [];
+	var used = [];
+	for (var col = 0; col < gridSize; col++) {
+		var colNums = [];
+		var min = col * 15 + 1;
+		var max = min + 14;
+		for (var row = 0; row < gridSize; row++) {
+			if (col === 2 && row === 2) {
+				colNums.push(0); // Free space
+				continue;
+			}
+			var n;
+			do {
+				n = min + Math.floor(Math.random() * (max - min + 1));
+			} while (used.indexOf(n) !== -1);
+			used.push(n);
+			colNums.push(n);
+		}
+		nums.push(colNums);
+	}
+	return nums;
+}
+// Create bingo card UI
+function createBingoCard() {
+	bingoCells = [];
+	cardNumbers = generateCardNumbers();
+	for (var col = 0; col < gridSize; col++) {
+		for (var row = 0; row < gridSize; row++) {
+			var cell = new BingoCell();
+			var x = cardStartX + col * cellSize + cellSize / 2;
+			var y = cardStartY + row * cellSize + cellSize / 2;
+			cell.x = x;
+			cell.y = y;
+			var num = cardNumbers[col][row];
+			cell.setNumber(num);
+			if (col === 2 && row === 2) {
+				cell.setMarked(true); // Free space
+			}
+			game.addChild(cell);
+			bingoCells.push(cell);
+		}
+	}
+}
+// Start a new game
+function startGame() {
+	game.state = 'playing';
+	gameOver = false;
+	calledNumbers = [];
+	availableNumbers = [];
+	for (var i = 1; i <= numbersRange; i++) availableNumbers.push(i);
+	createBingoCard();
+	numberCallText.setText('');
+	winText.visible = false;
+	timeLeft = gameDuration;
+	updateTimerText();
+	if (timerInterval) LK.clearInterval(timerInterval);
+	timerInterval = LK.setInterval(function () {
+		timeLeft -= 100;
+		if (timeLeft < 0) timeLeft = 0;
+		updateTimerText();
+		if (timeLeft <= 0 && !gameOver) {
+			endGame(false);
+		}
+	}, 100);
+	nextNumberCall(callIntervalStart);
+}
+// Call the next number
+game.currentNumber = null;
+function nextNumberCall(interval) {
+	if (gameOver) return;
+	if (availableNumbers.length === 0) {
+		endGame(false);
+		return;
+	}
+	var idx = Math.floor(Math.random() * availableNumbers.length);
+	var num = availableNumbers[idx];
+	availableNumbers.splice(idx, 1);
+	calledNumbers.push(num);
+	game.currentNumber = num;
+	numberCallText.setText(num);
+	LK.effects.flashObject(numberCallText, 0xffd600, 300);
+	// Speed up calls as game progresses
+	var nextInterval = Math.max(callIntervalMin, interval - callIntervalStep);
+	if (callTimer) LK.clearTimeout(callTimer);
+	callTimer = LK.setTimeout(function () {
+		nextNumberCall(nextInterval);
+	}, nextInterval);
+}
+// Update timer UI
+function updateTimerText() {
+	var sec = Math.ceil(timeLeft / 1000);
+	timerText.setText("Time: " + sec + "s");
+}
+// Check for win (row, col, diag)
+game.checkWin = function () {
+	// Build marked grid
+	var marked = [];
+	for (var col = 0; col < gridSize; col++) {
+		marked[col] = [];
+		for (var row = 0; row < gridSize; row++) {
+			var idx = col * gridSize + row;
+			marked[col][row] = bingoCells[idx].marked;
+		}
+	}
+	// Check rows
+	for (var row = 0; row < gridSize; row++) {
+		var win = true;
+		for (var col = 0; col < gridSize; col++) {
+			if (!marked[col][row]) win = false;
+		}
+		if (win) return endGame(true);
+	}
+	// Check cols
+	for (var col = 0; col < gridSize; col++) {
+		var win = true;
+		for (var row = 0; row < gridSize; row++) {
+			if (!marked[col][row]) win = false;
+		}
+		if (win) return endGame(true);
+	}
+	// Check diag TL-BR
+	var win = true;
+	for (var i = 0; i < gridSize; i++) {
+		if (!marked[i][i]) win = false;
+	}
+	if (win) return endGame(true);
+	// Check diag TR-BL
+	win = true;
+	for (var i = 0; i < gridSize; i++) {
+		if (!marked[gridSize - 1 - i][i]) win = false;
+	}
+	if (win) return endGame(true);
+};
+// End game: win or lose
+function endGame(won) {
+	gameOver = true;
+	game.state = 'ended';
+	if (callTimer) LK.clearTimeout(callTimer);
+	if (timerInterval) LK.clearInterval(timerInterval);
+	if (won) {
+		winText.setText("BINGO!\nYou Win!");
+		winText.style.fill = "#4caf50";
+		LK.effects.flashScreen(0x4caf50, 1000);
+		LK.showYouWin();
+	} else {
+		winText.setText("Time's Up!\nGame Over");
+		winText.style.fill = "#ff1744";
+		LK.effects.flashScreen(0xff1744, 1000);
+		LK.showGameOver();
+	}
+	winText.visible = true;
+}
+// --- Input: Restart on game over/win ---
+game.down = function (x, y, obj) {
+	if (game.state === 'ended') {
+		// Wait for LK to reset game
+	}
+};
+// --- Start ---
+startGame();
\ No newline at end of file