Full disclosure: I know a couple of the folks at Green Ronin, and I’d like to sell some stuff to at least one of them in the near future. That being said, I did back The Expanse Roleplaying Game: Transport Union Edition: I’m trying to get back into the books, and what I’ve managed to watch of the show so far is excellent. Also, doing my due diligence I can tell you that the company absolutely hates AI prompts. Finally, this project at least is using regional distributors (and thus I think operating under a print-on-demand system generally). I’m personally satisfied that the product is ethically sourced, in other words.
So fee free to check it out.
As you may know, the first book of the Expanse grew out of a series of gaming session. One of the earliest named character death happened when one of the player have to drop off the game for real life reason, so his character died in the game, and in the book. This is similar to the Japanese fantasy series Record of Lodoss War which grew out of gaming sessions of the writer.
On other front, Warhammer 40K writer Mike Brooke took his gaming Ork character Ufthak Blackhawk and inserted into two novels (Brutal Kunnin and its direct sequel Da Big Dakka), both are quite fun.