The game Tron is based on the motorcycle arcade game in the movie Tron. The theory is that you and a friend control motorcycles that lay down walls. The object of the game is to get your opponent to run into a wall or the side of the window. It may be small and look rather dull but try it with a friend and you may get addicted.
The controls for the first player's mototcycle (at the top) are A, S, D, and W. The second player uses J, K, L, and I. The game quits when either player runs into a wall or a side of the window. Tron does not support multitasking, so it would not be a good idea to play when you are, say, downloading a file.
This game is free, but being a starving 13 year old I would appreciate donations ($5 prehaps?). You can reach me at: