===================================================================
--- original.js
+++ change.js
@@ -29,14 +29,18 @@
 	var isGameOver = false;
 	var lastSpeedIncrease = 0;
 	hero.x = 2048 / 2;
 	hero.y = 2732 / 2;
-	for (var i = 0; i < 5; i++) {
+	var spawnEnemy = function () {
 		var enemy = self.addChild(new Enemy());
 		enemy.x = Math.random() * 2048;
 		enemy.y = Math.random() * 2732;
 		enemies.push(enemy);
+	};
+	for (var i = 0; i < 5; i++) {
+		spawnEnemy();
 	}
+	var enemySpawnInterval = LK.setInterval(spawnEnemy, 8000);
 	var touchStart = {
 		x: 0,
 		y: 0
 	};