there is actually a way to make the game a little bit more interesting. I never did it but maybe someone else would like to. If you beat all three levels and put you name in as "WRAPFIELD" without the quotes you will unlock a hidden mode. This is a wrap-around mode that adds a twist to this great game. You can watch the youtube video where I learned this from, here:
http://www.youtube.com/watch?v=-CH-Kx2sl9c
ENJOY!!!!!