The Great Old Ones ruled the Earth aeons before the incidental rise of man. They came from the gulfs of space, waged war upon one another, and then were cast down by even greater beings. Remains of their cyclopean cities and forbidden knowledge can still be found in the remote extremes of our planet. Upon uncharted islands, within dark ocean depths, under burning desert sands, locked within polar ice, miles below the Earth's crust, they lay imprisoned. But when the Stars are right they will awaken and walk this earth once more... This new edition is completely compatible with all previous 5th edition supplements for Call of Cthulhu. Some sections of the book have been revised and clarified, and the book includes some new interior art as well as incorporating the layout from the Origins Award winning Call of Cthulhu 20th Anniversary Edition. This book is a complete roleplaying game in one hefty volume. All you need to play Call of Cthulhu is this book, some dice, imagination, and your friends.