An interesting idea, but there's not much to it.
The game is similar to asteroids, except instead of destroying the asteroids, you need to cut one asteroid into as many pieces as possible. Pretty interesting twist on a classic game, but it gets boring really fast, and there isn't much replay value to it.
I did like the graphics though, which look like a blackboard with white chalk drawings on it! I've not seen many games that use that visual style, so bonus points for innovation.