I'm wondering if anyone's tried
DEFCON. It's an independent game based off of the movie WarGames, specifically the end part where the computer is running all the simulations of nuclear war.
The gameplay is very fun and it revolves a lot around the behavior of the players. Is your ally protecting you with those carriers? Or is he planning a sneak attack? What exactly was blue doing with those recon jets? Even though players can make alliances, only one player is allowed to win at the end, encouraging you to turn on your so-called allies.
6-way gameplay and many customizable game options keep the game interesting and exciting each time... I highly recommend it.
If you want, you can pick up a demo version
here. Contact me if you want to play a game.