I do think MUD's really have a lot of opportunity to be interesting/fun buildable worlds. That they can be delightful and instructive. Especially with LLMs, the sitting there hand crafting zone after zone after zone forever and ever: that part can take more of a backseat (even though it's also some of the best part).

There's a MUD inside it, but the late.sh ssh-able bbs with it's door games that got submitted 2 days ago is incredible. It's such a wonderful little text world there. https://news.ycombinator.com/item?id=49001127 https://late.sh/