===================================================================
--- original.js
+++ change.js
@@ -73,8 +73,12 @@
 bird.x = 2048 / 4;
 bird.y = 2732 / 2;
 var pipes = [];
 var pipeInterval = 1500;
+var currentLevel = 1;
+var maxLevels = 80;
+var levelInterval = 5000; // Time in ticks to increase level
+var lastLevelUpTime = 0;
 var lastPipeTime = 0;
 var score = 0;
 var scoreTxt = new Text2('0', {
 	size: 150,
@@ -89,8 +93,13 @@
 	bird.update();
 	if (bird.y > 2732 || bird.y < 0) {
 		LK.showGameOver();
 	}
+	if (LK.ticks - lastLevelUpTime > levelInterval && currentLevel < maxLevels) {
+		currentLevel++;
+		pipeInterval = Math.max(500, pipeInterval - 10); // Decrease interval to increase difficulty
+		lastLevelUpTime = LK.ticks;
+	}
 	if (LK.ticks - lastPipeTime > pipeInterval) {
 		var obstacle;
 		if (Math.random() > 0.5) {
 			obstacle = new Obstacle();