Just read the Carcosa setting description / dungeon starter from The Gauntlet’s “Codex Yellow.”
Wowowow. I love it. It’s extremely atmospheric, and manages to convey an incredible sense of place (and displacement and instability and alienation) in an incredibly brief span of words.
And the very next piece in the Codex has the “Planeshift die”, which I looked at and went, “Oh. That needs to be modified just slightly and transplanted right into Carcosa, yes it does.”
Fantastic. I was pretty hesitant to sign up for a recurring fee (I dislike Patreon in this way; personal preference is to buy good products, not subsidize the process) in becoming a Gauntlet Patron (the way to get access to Codex), and this alone is more than the price of entry. Just fantastic.
Tell us more. I may join into the patreon if you tell us more goodies