GPT-5.5 in Codex made a surprisingly solid table top RPG game masters guide & player guide, which it "playtested." It leans into the storytelling aspect, and still has some very LLM-y elements, but it is a novel setting. PDF: https://drive.google.com/file/d/10QKnfjJ… More: https://oneusefulthing.org/p/sign-of-the…