Mothership is a sci-fi horror roleplaying game where you and your crew try to survive in the most inhospitable environment in the universe: outer space! You'll excavate dangerous derelict spacecraft, explore strange unknown worlds, exterminate hostile alien life, and examine the horrors that encroach upon your every move. Designed from the ground up to be intuitive to run and easy to play, no system-mastery required. d100. Designed for very fast character generation.
The Player's Survival Guide is the core book.
MCU fanfic. Captain America becomes an eldritch hero.
C'thul'hu for president!
The only website I've been able to find for one of my favorite television shows of the early 1990's, The Nightmare Cafe.
A store chock-full of C'thuliana, from stickers to shirts to books. Fun to poke around in.
A short story written by Neil Gaiman as a dictated autobiography of C'thul'hu.
The C'thulhu Mythos in the modern day (kinda). UFOs, the paranormal, and a horse doctor's dose of government black ops.
A wiki intended for the game Delta Green by the denizens of the D-G mailing list. Contains speculation and discussion of elements of the metaplot, story ideas, additions to the game setting, adventures, and more. Much of this information is repurposable for other game settings (like GURPS, Conspiracy-X, and possibly Eclipse Phase), though anything that specifically references CoC or D20 rules will need to be rewritten.
A blog dedicated to C'thul'hu mythos-related props and other crafts.