Materia Prima: The Cult Expansion

From the vaults and drainage shafts one can hear the unholy muttering of ancient ceremonies. The followers of this cult worship a god who is known in the vernacular only as the Unspeakable. His arrival is near. Dive deeper into the world of Alka Sowa. The expansion "the Cult" contains a mini-campaign, which consists of two full-length scenarios and offers some new gameplay mechanics. To play the expansion you need both Materia Prima - The Alchemists Guild and Materia Prima - The Inquisition. —description from the publisher