Quote Originally Posted by Delta View Post
It's very niche and is most definitely not the "most recommended" one, but if I may pitch a curveball, I had a total blast running World Wide Wrestling RPG for a while in my local gaming meetup with a cast of changing players. The PbtA system fits the mechanics of professional wrestling perfectly, but of course there should at least be a moderate level of interest in the topic otherwise it will fall flat.

(and of course, considering the thread title, it is unfortunately not free, so there is that to consider)
I'll vouch for this. It totally is niche but it's a total blast. I can't think of any PbtA game that is 100% free though Masks: A New Generation does have enough posted online for free to run games.