The Two-Headed Serpent PDF

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An Epic Action-Packed and Globe-Spanning Campaign for Pulp Cthulhu

The world needs heroes, now more than ever. 

The Two-Headed Serpent is an action-packed, globe-spanning, and high-octane campaign set in the 1930s for Pulp Cthulhu. The heroes face the sinister conspiracies of an ancient race of monsters hell-bent on taking back a world that was once theirs. 

Working for Caduceus, a medical aid organization, the heroes will loot a lost temple in the forests of Bolivia, go head-to-head with the Mafia in New York City, face a deadly epidemic in the jungles of North Borneo, uncover the workings of a strange cult in dust-bowl-era Oklahoma, infiltrate enemy territory inside an awakening volcano in Iceland, face the horrors of hideous medical experiments in the Congo, race to control an ancient and powerful artifact on the streets of Calcutta, and ultimately travel to a lost continent for a desperate battle to save humanity from enslavement or annihilation!

Chaosium Unveiled: Inside the Two-Headed Serpent

Watch the unveiling video to see for yourself everything in the box and you get PDFs too!

Packed with nine adrenalin-fuelled adventures, Keeper advice, gorgeous full-color maps and player handouts.

Download the Pulp Cthulhu character sheet PDFs here.

Keeper Resource Pack for the Two-Headed Serpent

Want all the handouts for your players? Don't want to cut your book apart? You can download it here.

What the Critics Say

"Action, action, non-stop action! While I was playtesting the present campaign for the review, Chaosium received no less than 10 ENnie Awards in the 2017 ceremony, including Gold for Best Supplement for Pulp Cthulhu. Talk about premonition. The Two-Headed Serpent raises the bar very high when it comes to the Pulp Cthulhu rules and style of play. Definitely not a rehash of Cthulhu tropes, it unapologetically demonstrates that Cthulhu and pulp can go hand in hand."—Antonios S. Review, RPGNet.

"The plot details are even better than the original Masks of Nyarlathotep – the gold standard of Cthulhu scenarios.The Two Headed Serpent will provide many enjoyable game sessions of play."—GrogHeads.

"A cross between Indiana Jones and Hellboy... awesome action movie fun with a beautifully realized Lovecraftian back drop... The staff at Chaosium have put together a marvelous globe trotting tale of monster filled, paranoia inducing, world ending mayhem."—

"I especially love the variety of challenges the players must face and the amount of action which drives momentum to the finish line. 4 ½ Stars."—The Gaming Gang.

"Holy wow, is this one explosive. Like, literally."—Vintage RPG.

"One of the most amazing campaign books I've ever read..."—Gamer Supply Sourcebook.

"…fun, fast-paced and full of crazy action scenes. For those who like the mechanics and style of Pulp Cthulhu this is a golden opportunity to put it to the test."—Mundo Tentacular (Portuguese) 




Note: Note: The Two-Headed Serpent has been specifically written to be played with Pulp Cthulhu, although (with adjustment) the campaign can be played just with the core 7th Edition rule set.

Product Configuration

Physical Product Settings

Is Physical Product: [N]
Has Inventory: [Y]
United States: [Y]
United Kingdom: [Y]
Europe: [Y]
Australia: [Y]
Canada: [N]

Is PDF Available: [Y]
PDF Product Name: [Pulp Cthulhu - PDF]
PDF Product Link: [/pulp-cthulhu-pdf/]

PDF Settings

Has Physical Product: [Y]
Is Physical Available: [Y]
Physical Product Name: [The Two Headed Serpent - Hardcover]
Physical Product Link: [/the-two-headed-serpent-hardcover/]

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Page Count:
Paul Fricker, Scott Dorward, and Matt Sanderson
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