I once made a web-based MUD game. The response in Korea was surprisingly low. I concluded that MUD games weren't popular in my country, and the people who actually played them were mostly in their 40s and 50s, while general consumers preferred GUI.
These days, I sometimes think about whether I could make a MUD game that interacts with AI, but I wonder if it would appeal to a generation that has no memory of MUD games
Problem I have found is the barrier to get past that actually gets younger people to read something. I regularly have grad students at a top tier university just straight up not read my emails... Then expect me to explain it all again in person.
I think a killer feature for any modern MUD would be to incorporate an optional text to speech narrator for the large walls of text that are inherent in the area descriptions.
These days, I sometimes think about whether I could make a MUD game that interacts with AI, but I wonder if it would appeal to a generation that has no memory of MUD games