Took some finagling to get it to run since I only have Python 3.3 (I am assuming range() can accept floats in 2.7?), but I was able to play your game. I thought it was fun, if simple, and played about five rounds. I just wish you could move diagonally as well.

As a fellow Pygame contestant I have to try it ! I runned it with Python 2.7 (and Pygame installed of course)

You could make an executable of it by the way... at least tell which Python version you used to make it.

It's an interesting mechanic, the controls are a bit clunky.