What about spheres instead of plane skinnable boxes?
I am really sick about that simple 2d maps and you would have a nice idea implemented.
I came up with that idea originally for fighting (like tekken) games but it would be simplier to implement spheres in this game (i think).
The cool thing about it is, you will be attacked from every side... and the strategy that leads you to win the game would be changed as well...
(sorry for my english, i am still learning)
