Hey guys, I wanna probe yer brains for a bit. Me and me housemates would like a game that can be played co-operatively with four people. Doesn't really matter the kind of game or the format (between us we've got two of everything), but it'd be great if you could system link Xboxes or Thrixties, and have two on each. We've played Gears of War, Unreal Tournament 2004, Operation Global Storm, but fancy something fresh. Anyone got any ideas?