One part of MUD history that rarely gets told in English: the Chinese game industry basically started there. In the mid 90s Chinese students overseas ran wuxia MUDs like Xiakexing (侠客行, 1995), all text, built on the LPMud family.
Wuxia fit text games perfectly because every player already had the whole world in their head from Jin Yong novels, so zero graphics needed. A lot of the people who built the first Chinese online games came out of those communities.
King of Kings (万王之王, 1999), usually counted as the first Chinese graphical MMORPG, was a Taiwanese MUD team putting a graphical client on their existing game.
It's hard to find good info on Chinese netizen culture in English in general. I loved chinaSMACK back in the day, but haven't found a good replacement. Do you know of any blogs or anything about this?