A multiplayer
MUD-like networked
game that came about in the early
nineties. It is more socially oriented than most MUDs, and has a
programming language called
MUF that drives all but the most patient people
insane.
Derivatives of TinyMUCK, including FuzzBall, GlowMUCK, and NeonMUCK have also appeared on the scene. They have various enhancements, such as the LISPlike MPI language.