Call of Cthulhu is a horror fiction role-playing game based on H. P. Lovecraft's story of "The Call of Cthulhu" (note that the game drops the "The" from the story title) and HP Lovecraft's Cthulhu Mythos. First released in 1981, the system has seen several releases over the years. See also other Lovecraftian games under the H P Lovecraft Franchise.