awesome but one problem
It's a really fun and addicting game, that if you good at you could probably spend hours playing. The art is nice and the characters look really cool.
But one of the characters has tab as it's Grav-switch button and whenever you press tab the game pauses, and the guy doesn't jump. It's because on IE, tab cycles through clickable things on the page. So you might want to chang that button for IE users.