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.

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 zinepack of adventure modules for Old-School Essentials.

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

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.

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

A dark and whimsical OSR forest crawl adventure zine.

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.

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

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.

Enspell your table! Rebuilt from the ground up, fully OGL-free, brand new content, refined for clarity and usage. Over 1,000 spells, 210 rune spells and much more. This expanded tome brings the power of arcane, divine, and runic magic into your hands!

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