Witch covens battle in the city of Halloween. Virtue goes to die in the Eleventh Reich. T-Rexes hunt hominids in the tropical island of Mesozoica, while airships battle in the tempestuous cloud seas of Seishin Shore. Worlds Numberless and Strange, a setting sourcebook for The Strange, takes you into dozens of new recursions, where super-villains, dinosaurs, space troopers, killer robots, gods, and other dangers guard wonders and treasures few on Earth have ever seen!