SKU: 26709315792

Achtung! Cthulhu 2d20 Gamemaster's Guide

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Description

Achtung! Cthulhu 2d20 Gamemaster's GuideDirect the course of the new Secret War! Welcome to the Secret War in this fast paced pulp influenced rollercoaster of an RPG that nimbly mixes the sanity challenging terror of Lovecraftian cosmic horror, with the chaos and heroism of World War II. As a gamemaster you will bring to life this pulp influenced world of brave Allied heroes and dauntless two fisted adventure, guiding the heroic actions of players while also directing the twisted might of

Direct the course of the new Secret War!

 Welcome to the Secret War in this fast-paced pulp-influenced rollercoaster of an RPG that nimbly mixes the sanity-challenging terror of Lovecraftian cosmic horror, with the chaos and heroism of World War II. 

As a gamemaster you will bring to life this pulp-influenced world of brave Allied heroes and dauntless two-fisted adventure, guiding the heroic actions of players while also directing the twisted might of the Nazi occult: the Cult of the Black Sun, who wield foul magic and summon captive horrors and Nachtwölfe, their rivals who place their trust in Atlantean technology, weird science, and strange wonder weapons. 

You will shape a world where dread secrets and powerful artifacts lie forgotten in ancient ruins, where dusty tomes are replete with eldritch knowledge, and you’ll arm players with experimental technology, deadly weapons, and powerful magic, to do battle with this uncanny threat. 

You’ll bring to life exotic races like the Deep Ones, undersea worshippers of the dreaming god Cthulhu, or the strange Mi-Go, fungoid-insectoid beings who have come to Earth for an unknown purpose. You’ll also control the sanity-sapping monsters, entities, and gods of the Mythos themselves, who seek to take advantage of the chaos of the second world war to extend their dominion over the minds of men. 

Will your players prevail against all odds, or will they, like so many others before, fall to the malign influence of the Mythos? That is your story to shape and tell… 

Inside this Gamesmaster's Guide 260+ page full color US Letter sized hardback you’ll find: 

  • Dedicated advice on the art of gamemastering including managing the game economy and specific tips for creating memorable characters, adventures, and campaigns to thrill and delight your players. 
  • Major new lore and detailed background information on the six major factions contesting the Secret War: Section M, Majestic, Black Sun, Nachtwölfe, the Deep Ones, and Mi-Go including their backgrounds, history, hierarchy, secret bases and missions, and goals. 
  • A vast repository of hidden lore and forbidden magical knowledge including new Mythos books and tomes, powerful ritualistic magic, plus the damnable spellbooks of Nyarlathotep, Yog-Sothoth, and dread Cthulhu himself! 
  • Arm your players with a wealth of new weapons and espionage devices from secret government labs and classified research departments with the Secret Weapons of the Secret War chapter. 
  • Complete profiles and statistics for the powerful heroes and villains of the Secret War, the men, and women who do battle for the fate of mankind, plus a huge bestiary brimming with all the terrifying gods, monsters, and entities of the Mythos themselves.

You'll receive a FREE GM's Guide PDF right away. 

NOTE! The Achtung! Cthulhu Player's Guide contains the full core cinematic 2d20 rules for actual play and you’ll require that to play the game.

What is Achtung! Cthulhu?

Achtung! Cthulhu is a setting for Lovecraftian roleplaying during World War II, which allows players to discover the truth behind the malign influence of the Mythos on the Nazi war machine and beyond, as conflict engulfs the globe from 1939 to 1945.

In this pulp-influenced world of brave Allied heroes and dauntless two-fisted adventure, players will take on the roles of Allied servicemen and women, secret agents, members of the resistance, or even hapless civilians caught up in the wider conflict. All stand firm against the twisted might of the Nazi occult: the Cult of the Black Sun, who wield foul magic and summon captive horrors in their bid to unleash Yog-Sothoth and Nachtwölfe, their nominal allies and rivals who place their trust in Atlantean technology, weird science, and strange wonder weapons to prevail.

Players will experience a world where dread secrets and powerful artifacts lie forgotten in ancient ruins, abandoned sites, and forgotten cities, and peer deep into dusty tomes and manuscripts seeking to understand eldritch knowledge that was never meant for the sight of mortals. They’ll arm themselves with experimental technology and deadly weapons and learn to wield powerful magical spells or harness potent psychic powers to fight against this uncanny threat.

They’ll also encounter exotic native races like the Deep Ones, undersea worshippers of the dreaming god Cthulhu, or the strange Mi-Go, fungoid-insectoid beings from the furthest corners of the solar system who have come to Earth for an unknown purpose. Towering over them all are the monsters, entities, and gods of the Mythos themselves, who seek to take advantage of the chaos of the second world war to extend their dominion over the minds of men.

Will your heroes prevail against all odds, or will they, like so many others before, fall to the malign influence of the Mythos? That is your story to tell…

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SKU: 26709315792

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chase
Natrona Heights, US
★★★★★ 5
The only chew toy that has actualy held up...for well over 2 years!
Size: Medium, Style: 4 Pack, Size: Medium, Style: 4 Pack
These things are amazing! They last forever even with dogs that can destroy nearly everything else in mins! I ordered these as a doggie Xmas gift over TWO YEARS AGO, and they are still pretty much fully intact! They chew on them all the time, too!(see pics; that's over two years of steady use!) I only got the one 4 pack, and have 4 dogs, too! Since making them so well does kind of reduce my ability to buy many more from them, I feel I should at least let people know they really are crazy durable and dogs love them! I will prob buy another 4 pack soon, just so they are easier to find(end up under couches,etc). Def a good buy!!!!
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Reviewed in the United States on May 10, 2026
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Marie Phillips
Port Orchard, US
★★★★★ 5
Built for heavy chewers and actually holds up
Size: Medium, Style: Fishbone/Wishbone
This chew toy is a total win for heavy chewers and has held up really well compared to so many others we’ve tried. It keeps dogs busy for long stretches and they stay genuinely interested in it instead of destroying it in minutes. The shape makes it easy for them to grip and chew comfortably, which adds to how much they use it. The durability is the real standout here, making it one of those rare toys that actually earns a repurchase. The material feels sturdy, it’s easy to clean, and there’s no noticeable odor, which is always a plus.
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Reviewed in the United States on May 2, 2026
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Arrin
Chelsea, US
★★★★★ 5
Definitely recommend
Size: Large, Style: 4 Pack
My dogs absolutely love these! I bought them at a great price! They have lasted my dogs over a year! I have a full pitbull, pit/lab, pit/boxer, and a pit/mastiff. So needless to say they pass the power jaw test. They look just like the pictures and they are pretty light weight!
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Reviewed in the United States on May 24, 2026
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Geena H.
Chelsea, US
★★★★★ 5
Benebone is fantastic for heavy chewers and busy, adolescent pups!
Size: Medium, Style: 4 Pack
This little multi-pack is cost-effective in a few ways, super durable and effective, and I'll definitely be purchasing the multi-pack again. We discovered these about a year ago and have been buying them ever since. I'm just now getting around to reviewing them because they're that good, plus I love that the company is family-owned. Four "bones" lasts a little over a month for a power chewer, which is a bargain! You get 4 medium size "bones" for the retail price of 2. These smell delicious to dogs but humans can detect the odor, which is so nice. They are incredibly durable, but somehow also not too hard for a power chewer, and they keep pup from chewing on books and other items that we don't wanted chewed to bits. Heavy chewers (and their people!) love these and the variety of shapes means we can swap them out in rotation and keep pup's interest going for a few weeks. Wait until your pup has all of their adult teeth, as they are a little too hard for teething. And for super power chewers, watch out for the fish shaped chew, as this one seems to allow larger pieces to be chewed off the fish head "corners" more easily due to the relative thinness of the shape at that point when compared to the other 3 shapes. Keep an eye on how much your power chewer is taking off of these "bones" (little tiny pieces do get chewed off) and toss them (or recycle with Benebone!) when your dog is able to chew off more than a crumb size piece. Hooray for Benebone! Hooray for family-owned businesses! We'll be back for more!
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Reviewed in the United States on April 7, 2025
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Pat H.
Fort Morgan, US
★★★★★ 4
Seems Very Durable So Far
Size: Small, Style: 4 Pack
My dogs are really enjoying these chew toys! These keep them busy for hours!! So far they seem very durable and my little dogs can really chew and destroy so I’m happy about these so far! They rarely each chew a toy at the same time, but choose to take turns instead. But now they each have a chew toy and they are happy campers!!
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Reviewed in the United States on January 1, 2026

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