It's global thermonuclear war, and nobody wins. But maybe (just maybe) you can lose the least. Defcon lets players compete against up to 6 other opponents online in an all-out nuclear war. Strategically place silos, radar, carriers, submarines in order to save as many of your people as possible, while wreaking havoc on your opponents.
This demo lets you play the tutorial and a single-player game against one AI-controlled opponent. The demo also includes LAN and online play.