DEFCON is a fun little game, it's alot like the U.N Forum game, only the countries start with the tech for nukes, airforces, navies, etc. Player make alliances, attack each other, etc. Nukes can't be launched until DEFCON I, which is a later stage in the game. Most games turn into WWIII, which is pretty fun . The game is $10 on steam, if we could get this game night rolling that'd be pretty awesome.

Gameplay:

http://youtu.be/YAdyb6F0LJU?t=7m30s

This video summarizes the end game pretty well https://www.youtube.com/watch?v=-NKqhqIN3Zc