Merentha is a MUD(multi-user dungeon).  In Merentha,
there are many races, kingdoms, guilds, and almost
anything you can think of that has things to do with
fantasy games.  If you have ever played EverQuest. 
Merentha is kind of like EQ except, better(in my
opinion) and it has no graphics.  Like most MUDs,
it is a non-graphical RPG. For more information check out
Merentha's Webpage