DDO: Dungeons and Dragons Online - DDO (Dungeons and Dragons Online) is an Action-Adventure, MMORPG, Puzzle, Open-World and Third-person Video game created by Turbine and published by Atari.
Maplestory - MapleStory is among the most popular of MMO in the 2D area scrolling style offering a user count will into the lot of players.
Lineage II - Lineage II is a Massively Multiplayer Online Role-playing, Exploration and Combat video game developed and published by NCSOFT.
Path of Exile - Path of Exile is a free to play online action roleplaying game that draws clear inspiration from Diablo but charts a path all its own.
Cartoon Network Universe: FusionFall - Cartoon Network Universe: FusionFall is an Action-Adventure, Massively Multiplayer Online Role-playing and Third-person Shooter video game developed by Grigon Entertainment and published by Cartoon Network.
LaTale - LaTale draws heavily from some other 2D side scrolling video games to provide a great fantasy MMORPG world.