Murder by Numbers details the Correct, their beliefs, their practices, and their true motivations, as well as various ways you can weave them into your Shadow of the Demon Lord games.
Of Gears and Ghosts explores the inner workings of the Guild of Engineers: the Gearsmen of Lij, their Great Works, the arduous process needed to become a Gearsman, and the deadly secrets that form the literal foundation of the Guild.
The Cult of the Cog God reveals the secrets of Rûl’s newest faith and gives players everything they need to create members of this faith for their Shadow of the Demon Lord games.
Heart of the Machine God reveals a sinister new threat that infects clockworks and others alike, making them willing thralls to a monstrous entity.