maple classic™ 
are there any more MUDs active or did they die?
@squirrel There are lots of active MUDs; I used to have a list of big ones, not sure what happened to it. https://www.achaea.com is the biggest one I know of.
@noelle every mud seems to be high fantasy... can't i just have a mud where i can live in a town as a squirrel girl and not deal with rpg elements
@squirrel You might want to look into less-structured variants like MUX/MUSH/MUCK. I hang out on a MUSH but it's basically just a chat room.