MAG (32x8)

At their E3 press conference today, Andy Beaudoin from Zipper Interactive (known for the SOCOM series) revealed a new project called MAG, short for Massive Action Game. The game will break up to 256 human players into eight-man squads fighting each other simultaneously in a total free-for-all. Characters will be able to advance their statistics as they play.

Readmore & trailer

Too bad it's only for PS3 atm but i would certainly give it try when the game comes for PC (unlikely though)
imagine the chaos... :)