If you've been paying attention to this year's E3 coverage, you may have heard of Sony's new title under development, MAG, or "Massive Action Game". The game touts 256 simultaneous players in 8-man teams, and calls itself an MMO. But is 256 players enough to qualify as massively multiplayer?

There is no defined metric for how many concurrent players constitutes enough of a group for MMO designation, but what's a good place to start, at 500? 1,000? 5,000?

This article was originally published on Massively.