Here’s a quick video of what I’m working on: http://www.youtube.com/watch?v=VVs2PucUgWM
The idea of the game is that you have a baseball bat that you whack your enemies with. The initial enemy here just flies off , hitting other enemies on the way. As you can see, this makes it easy to take care of even large numbers of enemies. I’m also planning on exploding enemies. Not sure about any other enemy types yet. Possibly variations on those two.