TripleA - TripleA is a free (under GPL) turn based strategy game based on Axis & Allies board game.
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.
Gravity Free - Gravity Free – Light Particles Manipulation App developed and published by Kfirapps Limited.
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.
Particlescape - Particlescape app lets you create stunning patterns at your fingertips.
LaTale - LaTale draws heavily from some other 2D side scrolling video games to provide a great fantasy MMORPG world.