Classic Cthulhu Supplements
THESE ARE THE BOOKS that provide additional options and rules for the Call of Cthulhu game. If you are new to Call of Cthulhu, consider first the free Call of Cthulhu Quick-Start rules. These provide an introduction to the game.
For the core rules, go to the Call of Cthulhu 7th Edition section.
Just want the PDFs? Click here.