Call of Cthulhu Edition 5.6.1 Rulebook, hardback roleplaying game, by Sandy Petersen & Lynn Willis, with Keith Herber, William Hamblin, Mark Morrison, John T. Snyder & Friends
“The Great Old Ones ruled the earth eons before the age of man. Remains of their cyclopean cities can still be found on remote islands in the Pacific, buried amid the shifting sands of vast deserts, and in the frozen wastes of the polar extremes. Originally they came to this world from the stars. Now they sleep — some deep within the earth and others beneath the sea. When the stars are right they will rise, and once again walk the earth.
Call of Cthulhu is a roleplaying game based on the works of H. P. Lovecraft, in which ordinary people are confronted by the terrifying beings and forces of the Cthulhu Mythos. To play all you need are this book, some dice, and your friends.”