I'm having a bit of trouble with this game. Basically, after playing a few levels, the screen goes black. The menu buttons are still there. However, this effect only exists in levels. At the main menu, it's fine. refreshing works, but only for a little bit. Play a few more levels, and the screen goes black again.
If you have another game or graphics-intensive app running in the background, try closing it. Otherwise, my best guess is that your computer has a faulty GPU.
It would be REALLY cool if you could make this game multiplayer. It would be nice if you could make a catogorie (I don't know how to spell it) just for having fun in multiplayer. As for the game right now, it's awesome. I agree with most ideas other people have said.
If you have another game or graphics-intensive app running in the background, try closing it. Otherwise, my best guess is that your computer has a faulty GPU.