===================================================================
--- original.js
+++ change.js
@@ -35,8 +35,19 @@
 * Game Code
 ****/ 
 // Removed the reference to the undefined variable 'blueSquares'
 LK.on('tick', function () {
+	// Decrease the timer by 1 every 60 frames (1 second)
+	if (LK.ticks % 60 == 0) {
+		timer--;
+		// If the timer reaches 0, end the game
+		if (timer <= 0) {
+			LK.showGameOver();
+		} else {
+			// Update the timer display
+			timerTxt.setText(timer.toString());
+		}
+	}
 	for (var i = blackSquares.length - 1; i >= 0; i--) {
 		if (whiteBall.intersects(blackSquares[i])) {
 			blackSquares[i].destroy();
 			blackSquares.splice(i, 1);
@@ -88,7 +99,16 @@
 var scoreTxt = new Text2('0', {
 	size: 150,
 	fill: "#ffffff"
 });
+// Initialize a timer variable to keep track of the time left
+var timer = 30;
 scoreTxt.anchor.set(0.5, 0); // Sets anchor to the center of the top edge of the text.
 LK.gui.top.addChild(scoreTxt); // Add the score text to the GUI overlay.
+// Create a timer display
+var timerTxt = new Text2(timer.toString(), {
+	size: 150,
+	fill: "#ffffff"
+});
+timerTxt.anchor.set(0.5, 0); // Sets anchor to the center of the top edge of the text.
+LK.gui.topRight.addChild(timerTxt); // Add the timer text to the GUI overlay.
 // No need to handle game tick explicitly as the ball movement is handled via drag events
\ No newline at end of file