===================================================================
--- original.js
+++ change.js
@@ -83,22 +83,29 @@
 
 // Initialize enemies and bullets arrays
 var enemies = [];
 var bullets = [];
-// Initialize firing rate and enemy spawn rate
+// Initialize firing rate, enemy spawn rate, and wave system
 var firingRate = 60; // Decreased firing rate (ticks)
 var spawnRate = 120; // Initial enemy spawn rate (ticks)
+var waveCount = 0; // Number of waves that have passed
+var enemiesPerWave = 5; // Base number of enemies per wave
+var enemySpeedIncrease = 0.01; // Speed increase per wave
 var score = 0; // Global score variable
 
 // Function to spawn enemies
 function spawnEnemy() {
-	var angle = Math.random() * Math.PI * 2; // Random angle
-	var radius = 1200; // Spawn circle radius
-	var enemy = new Enemy();
-	enemy.x = 1024 + radius * Math.cos(angle);
-	enemy.y = 1366 + radius * Math.sin(angle);
-	enemies.push(enemy);
-	game.addChild(enemy);
+	var enemiesToSpawn = Math.ceil(enemiesPerWave * (1 + 0.2 * waveCount));
+	for (var i = 0; i < enemiesToSpawn; i++) {
+		var angle = Math.random() * Math.PI * 2; // Random angle
+		var radius = 1200; // Spawn circle radius
+		var enemy = new Enemy();
+		enemy.speed += enemy.speed * waveCount * enemySpeedIncrease; // Increase speed by 1% per wave
+		enemy.x = 1024 + radius * Math.cos(angle);
+		enemy.y = 1366 + radius * Math.sin(angle);
+		enemies.push(enemy);
+		game.addChild(enemy);
+	}
 }
 
 // Function to fire a bullet
 function fireBullet() {
@@ -172,11 +179,13 @@
 			enemies.splice(j, 1);
 		}
 	}
 
-	// Spawn enemies
-	if (LK.ticks % spawnRate === 0) {
+	// Spawn enemies and handle wave progression
+	if (enemies.length === 0 && LK.ticks % spawnRate === 0) {
 		spawnEnemy();
+		waveCount++;
+		spawnRate = Math.max(30, spawnRate - 5); // Decrease spawn rate by 5 ticks to a minimum of 30 ticks
 	}
 
 	// Fire bullets
 	if (LK.ticks % firingRate === 0) {