Yah, i bought this game purely from the fact that you can have 256 people in a game. And that's one of the few things that stand out from that game.
It is a fun game and it's kind of cool, but it didn't meet it's potential. And remember this, Mulitplayer only!!! That is a BIG downside. It's not worth the $60 with just multiplayer. It's cool to play, but with no Campaign, it should've been $40.