Modiphius Launches New D-Day Campaign Book for Acthung! Cthulhu

‘The Darkest Day’ campaign book now available for pre-order

London, ENGLAND: 7th May 2024

Modiphius Entertainment Ltd’s pulp adventure game, Achtung! Cthulhu has a brand-new D-Day campaign book available for pre-order on 7th May 2024.

The second of the late war campaign books for Achtung! Cthulhu, ‘The Darkest Day’ contains everything needed to run adventures during the greatest amphibious invasion in history, Operation Overlord.

The book consists of guide content for the GMs to use in games and covers some of the authentic weapons and equipment which featured during the D-Day landings. Also included are the fabulous, fantastic, and febrile inventions from the devious minds of scientists and boffins on both sides of the Secret War.

The second part of the book consists of a dozen adventures which form the main campaign. Pre-Invasion covers the build up to D-Day while Down with the Deep Ones is a mini-campaign set both above and below the waves amongst Cthulhu’s chosen children. Finally, The Darkest Day presents five missions set on and around D-Day itself. You can play all 12 of these missions in order for the full immersive experience, or dip in and out of them as you see fit. Some are minor diversions, others will have a major impact on the course of the Secret War, but all provide a stern test of your agents’ abilities – especially the epic finale: Unleash the Hellish Horde.

As the 80th anniversary of D-Day dawns, a percentage of this book’s profits will be donated to veterans’ charities, so that we never forget and keep the true spirit of D-Day alive.

Achtung! Cthulhu is a setting for Lovecraftian roleplaying during World War II, which chronicles the malign influence of the Mythos as conflict engulfs the globe during 1939-1945.

John Houlihan, line editor at Modiphius said: “It’s fantastic to be able to declassify this top secret project at last. We’ve assembled a crack team of writers and artists to bring D-Day: The Darkest Day to life and its comprehensive guide and epic campaign will be a real draw for Achtung! Cthulhu fans, especially on such a significant anniversary.”

Pre-orders for Achtung! Cthulhu The Darkest Day go live on Tuesday 7th May and can be registered at


About Modiphius Entertainment

Modiphius Entertainment is a London, England-based entertainment publisher of tabletop games and related hobby merchandise. The company launched its own IP, the Achtung! Cthulhu Roleplaying Game, in 2013, and has since released a huge range of tabletop games, including the Star Trek Adventures TTRPG with Paramount, the official Dune RPG with Legendary, The Elder Scrolls Skyrim The Co-Operative Board Game, the official Fallout: The Roleplaying Game, and Fallout: Wasteland Warfare miniatures game with Bethesda. The company has since launched new IP’s Cohors Cthulhu and Dreams & Machines.

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