PySpaceWar is an open-source game, loosely inspired by Spacewar, Gravity Wars, and a bit by Star Control (I and II).

Two ships duel in a gravity field. Gravity doesn't affect the ships themselves (which have spanking new anti-gravity devices), but it affects missiles launched by the ships.

You can play against the computer, or two players can play with one keyboard. There is also a Gravity Wars mode, where the two ships do not move, and the players repeatedly specify the direction and velocity of their missiles.

License: free

Additional System Requirements:

• Python 2.3 (or newer)
• PyGame 1.6 (or newer)
• Psyco is optional, but highly recommended for speeding up the game