So, turns out Sandy Petersen, one of the original designers of Call of Cthulhu, decided to share his expert opinion with regard to genomes and trans persons. Of course, he has absolutely no expertise, and could have easily just kept his trap shut. But he didn’t.
In response, I’m sharing my hack of Call of Cthulhu. It’s an improvement on the base rules, as well as a simplification, adding in a Mothership-style stress mechanic to deepen the way Sanity works. It worked really well for a few sessions of a game I ran not long ago. At the same time, this is not in any kind of polished state. These are drafts I fixed up a bit before I uploaded them.
All of this is intended to be Creative Commons, Attribution, Share-Alike, Non-Commercial.