[runjake]

Some of my MUD accounts from 1991-1992, which I still occasionally log into from time to time, out of morbid curiousity. They're inexplicably still online, but effectively ghost towns.

Other than that, probably my Gmail account from the beta days.

[quantxx]

A younger one here. What's MUD?

[Ivoah]

Multi-user dungeon, basically a text-based MMORPG.

https://en.wikipedia.org/wiki/Multi-user_dungeon

[bcks]

A text-based, multiplayer, real-time virtual world. Sometimes more group-chat, sometimes more adventure story scenario: https://en.wikipedia.org/wiki/Multi-user_dungeon

[plussed_reader]

MultiUserDomain - a precursor to today's MMO. You could connect to an ascii based adventure/roleplaying game that others could connect as well and communicate. I played astaria.net back in the late 90s.

[Arubis]

Multi-User Dungeon; Cf. MUCK for multi-user chat kingdom and friends. Essentially a shared text-only set of chat rooms with a theme and some built-in game logic.

[proaralyst]

Multi User Dungeons were sort of multiplayer roguelikes/interactive fiction. The text-based precursors to MMOs

[throwaway_08932]

My last ghost-town MUD died a few years ago :'(

http://lostunicorn.org/

[Croftengea]

Oh, I didn't know MUDs are still a thing. Memories...

[clucas]

swmud.org still gets active players :) Oldest player accounts are from '96 though, I think there was a big player wipe back in the mid-90s.