Achtung! Cthulhu is a terrifying World War Two setting, fully compatible with the Call of Cthulhu, Sixth Edition and Savage Worlds roleplaying games.

Evil Never Dies... It Evolves

Discover the secret history of the war that may (or may not) have happened: a time of strangely enhanced soldiers, more machine than man; a twisted future-past of occult and technological development and intrigue; and a society where humanity struggles to maintain its increasingly fragile grip on reality (whatever that might actually be).

Interface 19.40 adds a new alternate dimension to the Secret War, including:

- A variant, Mythos-Fuelled history for the Interface Zero 2.0: Full Metal Cyberpunk setting, where ancient gods watch your every move from the shadows of the datastream
- New rules on how to include cyberware, Gruesome genetic manipulations, and even weirder science in your Achtung! Cthulhu games
- A 33 page adventure, set in 1941, that can be played by characters from either World War Two or the Far Future
- In fact, a whole Crossover dossier's worth of useful Alternate Historical and fantastical information to help you expand your campaign out into the wider world of the Secret War.

WARNING! Due to the nature of the themes discussed, this book is recommended for a mature audience only

Requires the Call of Cthulhu 6th Edition or Savage Worlds Rulebooks to play. This is a supplement for use with the Achtung! Cthulhu: Investigator's and Keeper's Guides.

More about Achtung! Cthulhu

Discover the secret history of World War Two - stories of the amazing heroism which struggled to overthrow a nightmare alliance of science and the occult, of frightening inhuman conspiracies from the depths of time, and the unbelievable war machines which were the product of Nazi scientific genius - and how close we all came to a slithering end!

A massive gaming universe unfolds with the Achtung! Cthulhu guides, supplements, campaigns, miniatures and more.