Seems cool, but...
I like the concept. It's original and could be very fun and chalenging. However, I dided on level two and the game just froze, bug?
Anyway, I envisage a future for this, I hope that further levels will have power ups, as I believe there's no upgrade system, which would sure add to the game.
I gave it 3/5 5/10 but would revise this up if the bug is fixed, I'm sure.