Achtung! Cthulhu: Horrors of the Secret War

Achtung! Cthulhu already contains a huge variety of malign Mythos monstrosities, terrors and abominations but this new grimoire of terror expands on them even further. It also features a brand new section devoted to Invidious Cults and Infernal Sects, detailing the malevolent followers of the old ones.

The 100-page, softcover Horrors of the Secret War features:

Over 75 new creatures, monsters, entities, demons and gods which range from lowly animals to the terrifying gods of the mythos
Includes classic Cthulhu creatures like the Hunting Horror
Many new and unique monsters and monstrosities
A wealth of new cults who worship the deities of the Mythos and oppose them
Rules for generating a unique cult, plus a full color HQ map and mission seeds
Requires the Achtung! Cthulhu 2d20 core books to run.