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.

A series of connected adventures starting in our mortal realm and descending into Hell itself.

An Interdimensional Hell-Market for Old-School Essentials. Life is cheap here...but a good soul will cost you.

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

Within the White Temple, an extradimensional elf-made prison, you must battle Ramlaat’s supreme daemons and harness their Stones of Power for Law or Chaos.

Druskara is a brutal sandbox setting made for use with Shadowdark where the world evolves with or without you and your choices reshape the realm.

Unleash chaos with MÖRKTASTIC BEASTS, a nightmarish art book and Mörk Borg bestiary, featuring 150+ pages of twisted creations from eleven visionary artists. Back it to summon these horrors into your doom-laden adventures!

Experience fantascience roleplaying at the end of time. Escape the end of history. The eternal civilization is perfect. So say the gods, the machines. Will you defy the endless circle of awakening and forgetting? Can you kick a hole through the sky?

A fantasy adventure tabletop RPG, inspired by D&D 5e classes and monsters, but built with modern, narrative rules that strive for fluid gameplay, creative freedom, and a cinematic feel.

Pilot your own mecha in this high-octane cosmic horror TTRPG inspired by Evangelion, Pacific Rim, and Cosmic Horror.