One of my fav games, Tilt To Live has recently added a cool new game feature that let's you and a friend team up to wreak havoc on the dots. More press details follow (or just click on the embedded video)... "iPhone’s Tilt to Live, an accelerometer-based shooter enjoyed by over half a million users, came down with a serious case of the cooperatives yesterday evening. Players can now enjoy a 2-player version of our Viva la Turret gametype with a nearby friend, via wi-fi or Bluetooth. It’s a free update for anyone who purchased the 99¢ Viva la Turret expansion to Tilt to Live."
All of the rules and dot behaviors from Viva la Turret’s single player have been revisited, giving coop a unique flavor using the same basic ingredients. One player will man a machine gun turret, keeping himself and his partner alive. The other is in charge of collecting the jewels left behind by fallen foes, and maintaining a score-boosting multiplier. Using a wi-fi connection, highscores are synced to an online leaderboard where pairs compete for global domination.