There are SO many adaptations/derivatives! The first I’d connected the dots with was the library of Jürgen Leitner in the Magnus Archives horror podcast, then of course there’s a popular Minecraft YouTube ARG currently called “Searching for a World that Doesn’t Exist,” and the many SCPs, and and and the Hastur allegory in Doctor Who and the tv show True Detective bro KIY is everywhere

Yeah, I know about the True Detective One (the Tuttle pedo cult), Dr Who (Fenric), Delta Green one (memetic thingy) and the Minecraft One... only that the Searching for a World that doesent exist got something wrong, the King in Yellow does not drive you mad with knowledge, but with a monstruous obssesion that consumes your mind and life...