Devilry Press publishes 3rd Party content for Castles and Crusades, Classic Fantasy, Labyrinth Lord, Swords and Wizardry, Treasure Awaits (Ancient Odysseys), Old School Essentials, Basic Fantasy, Fantastic Heroes and Witchery, Openquest, Runequest, Basic Roleplaying, Dungeons and Dragons 5th Edition, and Pathfinder.
Devilry Press is currently developing its own core, flagship roleplaying game.