From publisher blurb:
Cthulhu Eternal is a multi-era, setting agnostic ruleset which aims to support inventive game designers who have original ideas for Lovecraftian roleplaying games or scenarios. It draws upon the long line of D100 games of Cthulhu-themed investigation, offering a beautifully streamlined and elegant set of mechanics to support a diverse range of gaming styles.
Different eras of human history each have their own flavor and character – due in part to the technology available, and in part due to social conventions of the day. Recognizing this, Cthulhu Eternal exists as a family of inter-related rules engines – each based on the same mechanics but tailored to the needs of a specific era.
This version of Cthulhu Eternal is specially designed to support Lovecraftian games set during the Second World War (1939-1945), in any corner of the globe. It can be used for fuel stories of civilian Protagonists thrust into Mythos-related horror and peril as a consequence of the war, or scenarios where players take on the roles of trained military forces who encounter (deliberately or otherwise) ancient terrors amid the fighting. Both groups are equally vulnerable and unprepared when the "Terrors from Beyond" break their chains and are freed upon the world ...
The Cthulhu Eternal World War II SRD aims to support a broad spectrum of different types of Lovecraftian game set during the war years. Whether you want a gritty and historical tone or something more pulpy and high-action, these rules give you the building blocks to tailor a memorable and evocative wartime tale of dread. Whether it's battling for survival behind enemy lines, cracking codes to uncover the nefarious plans of an unscrupulous cult, or flying Spitfires in nocturnal aerial combat with Night-gaunts, these rules have everything you need.
Note: We acknowledge that the real-world events of WWII incorporated their own horrors of human origin -- exploitation, unspeakable cruelty, eugenics and genocide. We stronly believe that such things should never be trivialised by attributing them to a supernatural source. Humans are more than capable of committing evil acts without the help of the Mythos; any game depiction of the war should address these subjects respectfully.