===================================================================
--- original.js
+++ change.js
@@ -178,13 +178,13 @@
 							self.isOnGround = true;
 							self.speedY = 0;
 							self.y = linesGroundLevels[self.lineIndex];
 							// Define speed for next hurdle => Defines the Difficulty
-							self.nextHurdleSpeedX = -1 + (-5 + 10 * Math.random()); // Level 1/3
-							self.nextHurdleSpeedX = 0 + (-5 + 15 * Math.random()); // Level 2/3
-							//(1 - difficultyLevel) * 4 + difficultyLevel * 2 * Math.random();
-							if (obstacles[self.lineIndex].length <= 3 && self.x > athlete.x) {
-								//self.nextHurdleSpeedX = -1 - 1 * Math.abs(self.nextHurdleSpeedX); Level 1/3
+							//self.nextHurdleSpeedX = -1 + (-5 + 10 * Math.random()); // Level 1/3
+							//self.nextHurdleSpeedX = 0 + (-5 + 15 * Math.random()); // Level 2/3
+							self.nextHurdleSpeedX = -1 * Math.min(0, 2 - difficulty) + (-5 + 10 * Math.random() * (1 + 0.5 * (difficulty - 1))); // Level n
+							if (difficultyLevel == 1 && obstacles[self.lineIndex].length <= 3 && self.x > athlete.x) {
+								self.nextHurdleSpeedX = -1 - 1 * Math.abs(self.nextHurdleSpeedX); // Level 1/3
 							}
 						} else {
 							self.jumpAnim();
 						}
@@ -453,19 +453,31 @@
 /****************************************************************************************** */ 
 var BonusManager = Container.expand(function () {
 	var self = Container.call(this);
 	self.isUsed = false;
+	self.alphaDirection = -1;
 	// Bonus asset
 	self.bonusGraphics = self.attachAsset('bonus1', {
 		anchorX: 0.5,
 		anchorY: 0.5,
-		x: 100,
-		y: game.height / 2,
-		alpha: 0.8,
-		visible: true
+		width: 100,
+		height: 100,
+		x: game.width - 150,
+		y: 75,
+		visible: false
 	});
 	// Update method for animations or effects over time
-	self._update_migrated = function () {};
+	self._update_migrated = function () {
+		if (!self.isUsed) {
+			return;
+		}
+		if (LK.ticks % 120) {
+			self.bonusGraphics.alpha += self.alphaDirection * 0.1;
+			if (self.bonusGraphics.alpha <= 0 || self.bonusGraphics.alpha >= 1) {
+				self.alphaDirection *= -1;
+			}
+		}
+	};
 	self.useBonus = function () {
 		log("BonusManager useBonus...");
 		if (self.isUsed) {
 			log("Alredy used ...");
@@ -828,8 +840,9 @@
 var difficultyLevel = 1;
 var droneEnrtyObstacleNumber = 5;
 var droneStaySeconds = 3;
 var globalBaseSpeed = -20 - 10 * difficultyLevel;
+var difficulty = 1; // Define difficulty level globally
 var globalSpeedPerLine = []; // Global speed for tracks and obstacles default -10 / min = -4
 var raceFinishTime = 0;
 var colorsArray = [0x1188FF, 0xFF0000, 0x00FF00, 0xFFFF00, 0xFF00FF, 0x00FFFF, 0xFFFFFF, 0xFF8811];
 var isDebug = true;
@@ -1229,8 +1242,9 @@
 	// Check for collisions
 	checkForCollisions();
 	// Update drone
 	drone._update_migrated();
+	bonusManager._update_migrated();
 }
 /****************************************************************************************** */ 
 /************************************** GAME FUNCTIONS ************************************ */
 /****************************************************************************************** */