===================================================================
--- original.js
+++ change.js
@@ -349,8 +349,33 @@
 		self.inactive = true;
 		self.inactiveStartTime = Date.now();
 	};
 });
+var KillerManager = Container.expand(function () {
+	var self = Container.call(this);
+	self.killers = [];
+	self.currentKillerIndex = 0;
+	self.lastKillerUpdate = 0;
+	self.killerDelay = 10000; // Delay in milliseconds before updating killer
+	self.addKiller = function (killer) {
+		self.killers.push(killer);
+	};
+	self.update = function () {
+		var currentTime = Date.now();
+		if (currentTime - self.lastKillerUpdate >= self.killerDelay) {
+			self.killers[self.currentKillerIndex].inactive = false;
+			self.currentKillerIndex = (self.currentKillerIndex + 1) % self.killers.length;
+			self.lastKillerUpdate = currentTime;
+		}
+	};
+	self.resetKillers = function () {
+		self.killers.forEach(function (killer) {
+			killer.reset();
+		});
+		self.currentKillerIndex = 0;
+		self.lastKillerUpdate = Date.now();
+	};
+});
 var Landscape = Container.expand(function () {
 	var self = Container.call(this);
 	var landscapeGraphics = self.attachAsset('landscape_1', {
 		anchorX: 0.5,
@@ -1357,25 +1382,12 @@
 	updateBackgroundColor();
 	if (!isPlaying || isKilled) {
 		return;
 	}
-	// Activate killers sequentially with a delay
-	var currentTime = Date.now();
-	if (currentTime - lastKillerUpdate >= killerDelay) {
-		// Deactivate all killers
-		killers.forEach(function (killer) {
-			killer.inactive = true;
-		});
-		// Activate the next killer in sequence
-		var nextKillerIndex = Math.floor((currentTime - lastKillerUpdate) / killerDelay) % killers.length;
-		killers[nextKillerIndex].inactive = false;
-		killers[nextKillerIndex].inactiveStartTime = currentTime;
-		// Update the last killer update time
-		lastKillerUpdate = currentTime;
-	}
 };
 // Initialize game
 function gameInitialize() {
+	killerManager.resetKillers();
 	// Initialize arrays and variables
 	// Attach the background asset to the game
 	background = game.addChild(new Background());
 	background.updateForLevel(currentLevel);
@@ -1453,14 +1465,16 @@
 	}
 	obstacleManager.resetObstacles();
 	game.addChild(obstacleManager);
 	// Create and attach the killer instance to the game
+	var killerManager = new KillerManager();
 	for (var i = 0; i < 3; i++) {
 		var newKiller = new Killer(i); // Pass index for each killer
 		newKiller.reset();
-		killers.push(newKiller);
+		killerManager.addKiller(newKiller);
 		game.addChild(newKiller);
 	}
+	game.addChild(killerManager);
 	// Create player
 	player = game.addChild(new Player());
 	player.frame = 0;
 	player.x = playerPositions[playerPositionIndex]; // Start at the center position
@@ -1486,9 +1500,9 @@
 	});
 	debugTxt.anchor.set(1, 1); // Set anchor to the bottom right corner
 	LK.gui.bottomRight.addChild(debugTxt);
 	isPlaying = false;
-	lastKillerUpdate = Date.now(); // Initialize lastKillerUpdate variable
 }
 gameInitialize();
 // DEVLOG:
-// Delay isPlaying when start button pressed
\ No newline at end of file
+// Delay isPlaying when start button pressed
+killerManager.update();
\ No newline at end of file