MAG, also known as Massive Action Game, is coming to the PS3. This game is much like an MMO mixed with a war/action game.
Gamers are able to battle with upto 256 players, who get organized into squads of 8 players.
The video shown looks pretty cool, and the concept is innovative aswell, for a console at least.
Jack Tretton said on stage that this game is not possible on any other system, with any other hardware. MAG is only possible because of the Playstation 3.