"AI Dungeon" is a machine-learning based text-adventure-adjacent thing, and I guess you could use it for erotic content if you really wanted. It's... not great

"AI Dungeon" is a machine-learning based text-adventure-adjacent thing, and I guess you could use it for erotic content if you really wanted. It's... not great at keeping a consistent world throughout the entire game, though, so it's kind of goofy and dream-like.