For sure! I created my initial setting using The Quiet Year by Avery Alder, and then used Not A Demon to explore it. I hacked the places from Not A Demon to be places I created in The Quiet Year, instead of the suggestions from the playbook, but otherwise I played the game as written.
I LOVED the premise of playing as a spirit who just wants to help, but can't be known, and can even be hurt by that misunderstanding. It brought up so many interesting interactions in asking why things might be that way, where misunderstandings might lay, what cultural pieces might be in place from the human perspective against spirits, what the structure of the spirit's culture might look like on their end etc...
Not a Demon really primed me to think outside of the box within a set problem. If I can't be seen, and it will hurt to be discovered, but my prime objective is to be helpful, what tactics can I employ with the tools I have, and how creative can I get in trying to resolve the Problems? And how effectively can spirits even help the problems for another species & culture in the first place?
Like, one of my favorite interactions was when my "demon" used the FOLD domain to make it so that a certain lawbook would constantly find itself on top of the lawmakers desk, sometime already helpfully turned to a relevant page, so that it was always top of mind for the lawmaker, with the intent to encourage new laws in that area of society.
It's my favorite interaction because I had such limited domains available that I had to get really creative with how I could try to affect lasting positive change for something as sweeping as social policies. I can honestly say I, as a player, would NEVER have thought to enact this kind of helpful mischief outside of the Not A Demon game. The game helped me explicitly explore ideas for solutions I wouldn't have thought of otherwise!
Definitely one of my favorite games I played.