I've been trying this AI text game called Formamorph and it's been my first experience with an AI storytells and goddamn I do like it as I was able to recreate something similar to Dieselmine Succubus Farm only I can be more dominant and create my own scenarios.
Problem tho is that is less of a game and more of just a story. I would look for other AI storyteller or something similar that can track stats and do dice rolls for some light RPG mechanics but I wouldn't know where to start.
But danm this is already pretty good and I read it uses a shitty AI too