Flaccid Acid

A street-by-street, door-by-door gazetteer of the Troikan borough of Ripplegate with spider banks, fire cults, population adjusters, and hundreds of other small businesses all mapped and packed with stats, spells, and secrets for your Troika games.

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

A city-crawl through a profane realm of the subtle divines of Vedic myth, created in homage to City-State of the Invincible Overlord and serving as a meta-commentary on syncretism, hedonism, and orientalist tropes on India across the history of gaming.

Escape from the labyrinthine prison-hell of Carcerus!

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

A zinepack of adventure modules for Old-School Essentials.

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