The Black Spire Pact is a slipcased pair of PvP adventure books where one player is a mortal sorcerer, the other a demon lord. PvP Gamebooks use a streamlined system built on and fully compatible with Old-School Essentials.

An official OSE supplement of demons, cults, and dark magic.

Remember those great Saturday morning cartoons? They're back – and you're the star. Be a panda, a postman, a possum, a pterodactyl . . . whatever you want!