It has mmo elements, but that does not make it an mmo. Borderlands has mmo elements, but it is not an mmo. Diablo has mmo elements, but it is not an mmo. Dot Hack (if you have ever heard of that game), also has MMO elements, but not a MMO. Fun fact: mmo = massive multiplayer online Also, Planetside 2 is labeled as an mmo because it is massive multiplayer online. There is also this bit of info of what makes a real mmo: http://www.gamebreaker.tv/news-main/mmorpg/what-makes-a-mmo-a-real-mmo/ http://www.mmorpg.com/gamelist.cfm/game/599/PlanetSide-2.html