In November, Geek Native wrote up Once Lost and their attempt to have an AI-powered computer roleplaying game. AI Dungeon 2 is already there.
Well, ahem. AI Dungeon is a text-based adventure in true Choose Your Own Adventure fashion, it’s free and far from perfect.
If you want a go, then pop over to AIDungeon.io.
The game has been trained on text from Fighting Fantasy style adventures. As a result, you can do pretty much what you want, but it can get pretty surreal at times.
Level up your geek stat by contributing to the comments.