Very nice sound effects :D Also liked the graphics :)
What I see as a problem, is that you start from the beginig when you fall, even when you have collected all the flyes. That makes returning to the door very easy :D I suggest, you add lives instead of keeaping flyes and when you fall, you just telleport back to the last platform. And also I think it would be cool, if you automatically collected flyes when you touch them.