MUD
text based online virtual world
Star Wars MUSH
1992 video game
Tapestries MUCK
text-based furry virtual world
Multi-User in Middle Earth
video game from 1992
Alter Aeon
1995 video game
MIST
text-based virtual world started in 1986
Achaea, Dreams of Divine Lands
1997 video game
MOO
text-based online virtual reality system
talker
MUD variant