Several Internet sites maintain lists of several kinds of MUD’s. Tiny MUD’s are often social MUD’s where the emphasis is on discussion. LP- family MUD’s (Diku MUD’s and AberMUD’s) are often role-playing MUD’s, where participants can travel in groups, confront monsters, solve puzzles, and gain experience and become a wizard. Others types include MOO’s, UnterMUD’s., MUSH’s, and others.
Resources. The following web sites provide lists of currently operational MUD’s: