This is the most difficult labyrinth ever made!!! here, no pretty balloons but only confonding walls allowing tricky tricks and wood columns everywhere for 3 floors. And however you're skilled, it will never be easy for you to pilot correctly while memorizing the map. Yek yek. My advice is to temporarly check the" unlimited fuel " box in settings. Oh , and planes have a almost-zero chances to passing through. Try with drones or helicopters. Last thing: the third floor is hard, but there is an exit!!