As long as mortals have feared what awaits them after death, the threat of damnation has loomed. Powerful fiendish lords rule the deepest, darkest reaches of the Great Beyond: archdevils, demon lords, the Horsemen of the Apocalypse, and more. Such is the power of their evil that even angels cannot resist it—when one servant of Heaven cataloged all the evil in existence in the Book of the Damned, Heaven's judges doomed him to exile, appalled at what he had wrought. And now you hold those horrors in your hands! Pathfinder RPG Book of the Damned explores the evil planes and their fiendish rulers as they exist in the Pathfinder Roleplaying Game. This imaginative tabletop game builds upon more than 10 years of system development and an open playtest featuring more than 50,000 gamers to create a cutting-edge RPG experience that brings the all-time best-selling set of fantasy rules into a new era.