MapleStory 2 is an upcoming free-to-play, 3D MMORPG that is being developed by Nsquare (a joint development team with members from Nexon and NCsoft). It is the sequel to the highly successful 2D MMORPG MapleStory, although its story takes place many years prior to the events of MapleStory.
MapleStory 2 shares much of its content with the original MapleStory, including its items, mobs, NPCs, and locations. However, new content is being added as well, such as mini-games and PVP. A large emphasis has been placed on user created content; players can build their own houses and dungeons, customize items, and import images into the game. MapleStory 2 does not currently have a scheduled release date, but it is expected to be released sometime during 2015.