I run a small D&D group with a couple of friends. I don't know that I'd want to play in a campaign helmed by an AI dungeon master, but the idea of having some help generating plot, assets, etc. when I don't have a lot of time before a game session sounds amazing.
I tend to be an AI pessimist, but this seems like a good example of a way that AI could be used to supplement human creativity instead of just replacing it entirely.