===================================================================
--- original.js
+++ change.js
@@ -219,8 +219,70 @@
 			}
 		}
 	};
 });
+// Obstacle3 class
+var Obstacle3 = Container.expand(function () {
+	var self = Container.call(this);
+	var obstacle3Graphics = self.attachAsset('obstacle3', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	// Set obstacle3 speed
+	self.speed = -5;
+	// This is automatically called every game tick, if the obstacle3 is attached!
+	self.update = function () {
+		// Check if the obstacle is colliding with the shield
+		if (self.intersects(shield)) {
+			// Calculate the direction vector between the shield and the obstacle
+			var dx = self.x - shield.x;
+			var dy = self.y - shield.y;
+			var distance = Math.sqrt(dx * dx + dy * dy);
+			// Normalize the direction vector
+			dx /= distance;
+			dy /= distance;
+			// Push the obstacle away from the shield
+			self.x += dx * 5;
+			self.y += dy * 5;
+		}
+		// Check for collision with diver
+		if (self.intersects(diver)) {
+			// Flash screen red for 1 second (1000ms) to show game over
+			LK.effects.flashScreen(0xff0000, 1000);
+			// Show game over. The game will be automatically paused while game over is showing.
+			LK.showGameOver();
+		}
+		// Continue moving upwards
+		self.y += self.speed;
+		// Add unique behavior to obstacle3
+		self.rotation += 0.05; // Rotate faster than obstacle1
+		self.scale.x = 1 + Math.sin(LK.ticks / 5) * 0.05; // Larger size change
+		self.scale.y = 1 + Math.sin(LK.ticks / 5) * 0.05;
+		if (self.y < 0) {
+			self.destroy();
+			var index = obstacles.indexOf(self);
+			if (index > -1) {
+				obstacles.splice(index, 1);
+			}
+		}
+		// Check if the obstacle is colliding with another obstacle
+		for (var i = 0; i < obstacles.length; i++) {
+			var otherObstacle = obstacles[i];
+			if (self !== otherObstacle && self.intersects(otherObstacle)) {
+				// Calculate the direction vector between the two obstacles
+				var dx = self.x - otherObstacle.x;
+				var dy = self.y - otherObstacle.y;
+				var distance = Math.sqrt(dx * dx + dy * dy);
+				// Normalize the direction vector
+				dx /= distance;
+				dy /= distance;
+				// Increase the repulsion force and always push the obstacle to the outside
+				self.x += dx * 10;
+				self.y += dy * 10;
+			}
+		}
+	};
+});
 // Shield class
 var Shield = Container.expand(function () {
 	var self = Container.call(this);
 	var shieldGraphics = self.attachAsset('shield', {
@@ -380,9 +442,10 @@
 		console.error('Error: layoutPositions is undefined. Check the layout variable and the positions object.');
 		return;
 	}
 	// Randomly choose an obstacle type for the entire wave
-	var obstacleType = Math.random() < 0.5 ? Obstacle1 : Obstacle2;
+	var obstacleTypes = [Obstacle1, Obstacle2, Obstacle3];
+	var obstacleType = obstacleTypes[Math.floor(Math.random() * obstacleTypes.length)];
 	for (var i = 0; i < layoutPositions.length; i++) {
 		var obstacle = game.addChild(new obstacleType());
 		// Position the obstacles according to the layout, using the grid for positioning
 		obstacle.x = 2048 / 2 + (layoutPositions[i].x - gridSize / 2) * cellSize;