This is what happens when you let me stay up until 4 AM. I start creating random crap like this. Surprisingly, this game is very interesting and can be very addicting. Really, I think you should give this a try. The flies move realistically. The object of the game is to survive for as long as possible, killing as many flies as possible. If a fly touches the mango, it will decrease in size and eventually disappear.
Just download it here. Its not that big of a file anyways. (230 Kb).