Vault of Monsters is a 5e-compatible adventure rooted in British folklore, full of creatures with personality, lore with attitude, and encounters that escalate without asking permission.

The Cursed Flames is a fast, brutal escape adventure for Shadowdark RPG. Designed for 3–5 characters, Level 2–4. Built for one intense 3 hours session. Minimal prep, ready-to-run structure.

Create The Cure! The cure to what? Well, that's up to Marketing. However, rumor has it that a rival lab has sent someone to sabotage your efforts... Work together, if you can trust each other...

Riposte! and Cell Block 18 are two-player, 18-card strategy games that fit in your pocket. Try to anticipate your opponent's next fencing move in Riposte! or escape from prison in the asymmetrical Cell Block 18.

A fast and tense party game where you are a vampire who must eat a well-rounded meal to fart the most succulent fart imaginable.

Will you poor souls become heroes, or will all Hell break loose in the final installment of Afterthought Committee's Level-0 series for Old-School Essentials?

The gates of the Abyss have been thrown open! We're bringing you unique wooden miniature demons, dripping with old school style, for OSE Month.

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.

A dark and whimsical OSR forest crawl adventure zine.

This Demonic Adventure for the Old School Essentials system takes a party into a small pocket dimension of the hells. (A little Hellraiser and a bit of Silent Hill thrown into the Slaughterhouse sausage!)

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.

Delve the depths of evil with new demons and devils for your Old-School Essentials game, each with full stats and a small adventure showcasing these infernal entities. Perfect for Referees who need a few fiends in low places!

HELLCRAWL is a jumbo sized hexcrawl set in Nethria, the Burning Hell. This infernal module is built for Old-School Essentials and will throw your unfortunate players down into the darkest depths of hell.

A zinepack of adventure modules for Old-School Essentials.

Loud, colorful, and cartoonish art book, showcasing the demonic forces living in their various hells, and the clerics who worship them.

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

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

A new OSE bestiary of ancient horrors! Explore the Qliphoth, demons born from discarded divinity. Includes new spells, lore, and the occult scholars who dare name them. Knowledge is power, but every truth corrupts.

A doomed starship warps through the abyss and crashes into a sword-and-sorcery world, unleashing cyborg demons and alien tech. Classic science-fantasy meets 90s-inspired radness as high-level heroes face the forces of chaos in the hell-corrupted wreck.

Escape from the labyrinthine prison-hell of Carcerus!

A low-level adventure set in the plagued wilderness and abandoned mines of a crumbling dwarven mining town. Demon-hunters march in force, strange beasts stalk the woods, and cultists dig for something still buried in the silver mine...

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

The light went out, and the screaming began. Something has awakened below the jagged rocks of the Lonely Wyvern's Bluff Coast. A thick, unnatural fog has swallowed the lighthouse. The crew is silent. But something is moving in the dark.

A massive 26" x 39" full color poster of the Salamander Mines megadungeon