Of the many -- so, so many -- MMOs represented on the PAX Prime 2011 show floor, ArenaNet's long-in-development Guild Wars 2 easily presents the most outside-the-box thinking. Where other entries in the genre tend to look at their contemporaries and attempt to iteratively repair their rough edges, Guild Wars 2 throws out baby, bathwater and tub, starting with a base that's altogether unprecedented.

Take, for instance, this core conceit: Why do other MMOs require you to stand still to use most of your character's abilities? Why not allow them to fire off powers while ducking and dodging through salvos of enemy attacks? Why not let heroes use their powers, regardless of whether or not they're targeting an enemy? Why not put some action in your MMO, or vice versa? ArenaNet seems to have noticed most developers' proclivity for sacrificing streamlined gameplay for staple MMO characteristics, and repeatedly asked that very question: Why?