Graphical glitch

This looks like a problem we're investigating now, involving crazy graphical glitches. Just in case, check your card temperature when playing, but it's most likely that it's the issue we're investigating.

The game isn't optimized, and doesn't have a framerate limit, so depending on your card it may push itself very hard to try and get as high a framerate as possible! Vsync will just cap the framerate at 60, so it'll stop your card pushing itself too hard, but you may want to use other software to limit the framerate if it's still causing heat problems.