2.5 I have a smartphone that is pretty much filled to the brim with actual, functional, persistent MMORPGs. Some of them are three-dimensional romps through massive worlds filled with dungeons and dragons; others are representational browser-based games that work through the phone's native browser; and the rest are hardly nothing more than a few dots on the screen and impressionistic gameplay.
http://2p.com/3730208_1/8-MMORPG-amp-MORPG-for-Smartphone-of-2013-by-enidmo.htm