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!)

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...

A zinepack of adventure modules for Old-School Essentials.

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?

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.

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 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 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.

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

A new level has been discovered beneath the Castle of the Mad Archmage! On the western edge of the 5th level, new corridors have appeared, leading off into unknown regions of the dungeons. An expansion module for Castle of the Mad Archmage.

FLAIL is an old-school, fantasy RPG where spells act up, weapons fall apart, and characters survive mostly through nerve and sheer luck. Designed for people who like single-session dungeons and short campaigns of 10~15 sessions. Low-prep, max play.

The forge of fantasy role playing, Gary Gygax's legendary dungeon and its environs. Here begins the journey into depths never before reached.

The real dungeon was the hobby we made along the way. Dungeon crawl your way through half a century of RPG history in this full-scale megadungeon for the DIE RPG by Gareth Hanrahan.

Legendary TTRPG designer Monte Cook, creator of Return to the Temple of Elemental Evil, Ptolus, and more, returns to the megadungeon!

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.

Like your adventures a little WEIRD? Three-eyed goblins, psychic plants, and a carnivorous cauldron (among other things) await you in this Castle Whiterock tie-in adventure for DCC RPG and 5th Edition.

The PCs (and various NPCs from the Inn of the Slumbering Drake) are transformed into monsters by Drugila the orc’s botched ritual. They must quest to return themselves to their original form and stop Drugila’s masterplan.

Does your party want some great loot? Look no further than the heirlooms and lore of steampunk gnomes, as your party helps reclaim a merchant's long-lost heritage? In conjunction with Megadungeon Month: Steamlander, a DCC - Castle Whiterock adventure.

Explore the mysteries of a time-traveling tower under siege in this mind-bending adventure! Compatible with Dungeon Crawl Classics and 5E.

The Madness of Metronax is a low-level adventure for Dungeon Crawl Classics and 5e that increases ties between Castle Whiterock and nearby Cillamar. And it has magical giant ants!

This 48 pg book features NEW illustrated plates (by C. Aaron Kreader) of each level in Castle Whiterock. Now 5e or DCC judges will have rendered handouts, unique notes from the original designer, and remembrances of the greatest dungeon story ever told!