The Ninth World is the setting of Monte Cook’s multiple-award-winning Numenera RPG. Beneath the Monolith brings this critically acclaimed world to 5e. Explore the ruins of incomprehensible civilizations. Discover the numenera, ancient technologies so advanced that most people think they’re just magic. Encounter creatures weird, fierce, and dangerous. Open doors to new worlds and alternate dimensions. And, perhaps, unlock some of the mysteries of the prior worlds.

Beneath the Monolith brings the wondrous Ninth World your Fifth Edition game.

Arcana of the Ancients will help you get the most of this book. It contains loads of cyphers, artifacts, creatures, and additional content that brings a Ninth World campaign to life, along with great advice and information on running weird science-fantasy games in 5e.