Aion

Official servers remain in maintenance mode. Aion: The Tower of Eternity, known also as The Tower of AION in Japan is a massively multiplayer online role-playing game (MMORPG) released by NCsoft, a major Korean game developer. It was released in North America under the one-word title of Aion. The game combines PvP and PvE (a concept the developers call PvPvE) in a fantasy game environment. Source: Wikipedia, "Aion: The Tower of Eternity," available under the CC-BY-SA License.