Devilarium: The Mythos Merchant is a supplement for Zgrozy, the Polish-language spinoff of Chaosium's Call of Cthulhu RPG.
Synopsis[]
Devilarium details a new Mythos creature which will trade information or items of use to Investigators in return for something precious to the Investigators, in the same way that traditional folklore and occult pacts with the Devil or other supernatural contracts were said to work.
Behind the Mythos[]
Zgrozy is an imprint for Polish players of Call of Cthulhu RPG, more recently translated into English for the general audience. Available in print and digital in Polish, Zgrozy as of mid 2021 is available only in digital formats for the English speaking audience. "Zgrozy" is an old Polish word of archaic usage, meaning "Horrible" or "Terror". The Zgrozy range is part of the Miskatonic Repository range of third party community products released under the Chaosium approval process.