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.
Okamiden - Okamiden is based inside the Okami game world and plays out like a sequel to the popular game.
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.
Inotia 4 - Inotia 4 is an Action Role-playing and Single-player video game developed and published by Com2uS for Android and iOS devices.
LaTale - LaTale draws heavily from some other 2D side scrolling video games to provide a great fantasy MMORPG world.
Underworlds - Underworlds is one of the few video games on the app store to capture the older action RPG feel.