Fury

Fury was a game announced as an arena-based PvP MMO with no PvE content. Players fought as groups or as individuals in 3 different warzone game types: Bloodbath (everyone vs. everyone), Vortex (team-based capture-the-flag variant), Elimination (team-based elimination of the best of 3). A fourth game type, Fortress (large-scale fortress sieges), was in development but never completed. Players advanced in ranks, gained equipment, and purchased skills and abilities that allowed them to build their character in a completely customizable, skill-based system. You could save your equipment and skills as an "incarnation" and switch incarnations between warzones. There was no specific "class" like in other MMOs, and you didn't have to have alternate characters to explore other aspects of your character, because you could simply build another incarnation of yourself.