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Release [Chaosium] Miskatonic Monday - New Call of Cthulhu Releases from the Miskatonic Repository

Michael O'Brien

An eclectic mix of new Miskatonic Repository scenarios here, showing the versatility of the Call of Cthulhu RPG!


The Grindhouse: Volume 1
Alex Guillotte, Ian Christiansen ($2.95, 40 page PDF)

grindhouse [grahynd-hous] n. – A grindhouse or action house is an American slang term for a theatre that mainly shows low-budget horror, splatter and exploitation films for adults.

Friday Night Double Feature!

The Crimson King: This scenario takes place in the early 1980s. The characters have been invited to an exclusive nightclub that features early goth music with industrial and punk influences. Illicit drugs and overt sexuality are ubiquitous with the underground nightclubs of the time, and by all accounts The Court of the Crimson King is no exception.

Isle of the Damned: Set on a small island off the coast of Maine, this scenario takes place in the summer of 1974. A group of friends have rented a small vacation house with the intent of spending a week fishing, drinking, and maybe smoking a little weed. Things begin to go sideways when they hear a noise from beneath the cabin that leads them to a hidden door. What lies beyond will change their lives forever.

These aren’t your typical Call of Cthulhu scenarios where some classy, well-dressed investigator sips tea and pours over leather books in some wood paneled library. These are burning dumpsters of pure horror where a fleeing private investigator limps through some filthy back alley on a busted ankle while a howling pack of mutants try to beat them to death with the limbs of their dead friends. In other words, these are not for the faint of heart, and are intended for mature audiences only. Player discretion is advised.


Treasure for the Watcher
Paul Owen ($2.50, 14 page PDF)

A bank robbery leads the investigators into a deeper plot in this Down Darker Trails scenario. The package contains the adventure, pre-generated characters and maps.

Lost Port Royal
Andy Miller ($5.99, 66 page PDF)

Both residents and visitors of Port Royal, Jamaica, in June 1692 have noticed odd things occurring in the town. It’s about to get a lot worse. As madness and strangeness spread through Port Royal, only a small group of locals and sailors can hope to stop what is happening in the British colony. Who or what is causing the increasingly odd occurrences in the “Wickedest City on Earth” and why? If the investigators don’t find out and stop it, it could be the end of Port Royal. It might be anyway.

A Stuart-Era scenario set in the waning years of the Golden Age of Piracy in the West Indies, now known as the Caribbean. In the age of tall ships and flintlock pistols, the bustling town of Port Royal, Jamaica, is in deadly danger and only the investigators can possibly save it. Or can they?

The Plague of the Pharaohs
Allan Carey ($8.99 $4.50, 33 page PDF)

"Some things should remain buried and forgotten by history. When a team of explorers and Egyptologists take shelter in the Lost Pyramid of Renpet, they find out exactly why..."

Brought to you by award-winning Chaosium licensee, Type40, The Plague of the Pharaohs is the twelfth Call of Cthulhu adventure in the monthly Seeds of Terror range.


The Moving Star
Marina D S Rodrigues ($5.99, 43 page PDF)

The year is 2936. Almost half of Earth’s land is now a watery and icy wasteland, but thanks to the discovery of wormhole technology humans have been exploring outer space. For the last 200 years humanity has colonized a planet christened ‘Spero’, where 70% of the human race now lives.

A slow burn Call of Cthulhu scenario set in a cyberpunk future. Board The Moving Star, the largest commercial spacecraft travelling between Earth and Spero - we at The Moving Star promise you a journey you will never forget.

Cthulhu Maps - Scenario Map Pack #2 - Genius Loci
Cthulhu Architect ($7.99, 26 maps in PNG format)

All the maps needed to play Genius Loci from Doors to Darkness, available with grid or without grid and in high (140 PPI) and low (70 PPI) resolutions. Suitable for use with VTTs.

The Arkham Witch Trials of 1693
Duncan Heystek ($2.25, 21 page PDF)

The sleep town of Arkham has suffered a lot this past year. Like Salem, a bloody witch hunt has been conducted, seeing many innocents to the gallows for no logical reason. However when an old widow in town has been accused of witchcraft, strange thing begin to seep into this silent little town. Can it be mere coincidence, or is there truly witches among them?

A scenario for new players or inexperienced Keepers set in 1693 colonial Arkham.

Grieving Skies
The Death Die Club ($3.99, 32 page PDF)

The adventure takes place in Mexico in 1928 during the Cristero War. This conflict between the Mexican government and the Roman Catholic church lasted 4 years and claimed over 80,000 lives. The investigators are part of a government platoon tasked to visit towns, bolt shut churches and imprison dissidents. When the group locates the hideout of Don Jose Garzon, a prominent Cristero leader, they can´t pass up the opportunity to capture him. Unfortunately, none of them where ready for what they were about to face inside the hacienda.


The Grieving Skies scenario was created as part of the Storytelling Collective's "Write Your First Adventure" course. Do check out the two Call of Cthulhu Writers Workshop Bundles on offer, with thirty-eight adventures written by fellow alumni from the Summer 2021 course!

Plus new titles in Korean, French, and Bahasa Indonesia!


Under the Miskatonic Repository community content license, Call of Cthulhu fans can make their own work for use with the game line available to the public, using guidelines, templates, and art provided by Chaosium.

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Whether you share your content for free or put it up for sale, this program is a digital home for terror that joins the dreamscapes of all who peruse it.

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Michael O'Brien


Now available on DriveThruRPG - two collections of Call of Cthulhu adventures created during the Summer 2021 RPG Writer Workshop!
  • Bundle One consists of 19 titles for $34.99 (total value $56.54, save $21.55 - 38% off)
  • Bundle Two consists of 19 titles for $39.99 (total value $60.21, save $20.22 - 34% off)
Once again, congratulations to everyone who has published for the first time, we're proud of you! For anyone who would like to give scenario writing a go, our friends at the Storytelling Collective will be running the workshop again in November!

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Under The Miskatonic Repository community content license, Call of Cthulhu fans can make their own work for use with the game line available to the public, using guidelines, templates, and art provided by Chaosium.

Whether you share your content for free or put it up for sale, this program is a digital home for terror that joins the dreamscapes of all who peruse it.

Michael O'Brien

Miskatonic Repository - Seeds of Terror Range

Congratulations to community creator Allan Carey of Type40! Twelve months ago he started the Seeds of Terror range on the Miskatonic Repository, with the aim creating a monthly series of accessible and exciting scenarios for Call of Cthulhu that Keepers can pick up and run in one evening.

Twelve months later, there are twelve Seeds of Terror to choose from, including the ENNIE nominated winning Hand of Glory. Each is a concise, easy-to-run Call of Cthulhu adventure designed for a single session of exciting play. Suitable for 4 to 5 players, they include maps, handouts, and five ready-to-play investigators. Everything needed to play has been presented as clearly as possible for a quick fun game. No need for hours of Keeper preparation, just pick one up, have a quick read, and dive right in!

To mark this anniversary, Type40 have put the entire range at 50% off right now.


Seeds of Terror creator Allan Carey says, "Seeds of Terror are perfect for introducing new players to Call of Cthulhu. An important goal of each adventure is to remove barriers of entry to new players. Leaning heavily on well-known tropes but at the same time subverting normal expectations, the Seeds of Terror line explores easily-referenced and familiar situations to help immerse players in the action."

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Are you a Keeper looking for new scenarios and story elements? A player looking for something mysterious to spark a character idea? Is your group looking for eerie ideas to use in your game? The Miskatonic Repository is where you can find —and create —self-published material for the Call of Cthulhu roleplaying game.

Interested in submitting content? Go here to see the guidelines, and here for the additional guidelines. No extra license is required. Get started and download the MS Word template or the InDesign template for Miskatonic Repository submissions, and check out our other free creator resources.

Michael O'Brien

Miskatonic Repository Titles August 2021

Here's a great selection of new Call of Cthulhu community titles on DriveThruRPG! Congratulations to all the authors, especially first-time publishers in the Miskatonic Repository.

Miskatonic Repository Titles August 2021

Four-Bit Characters, Volume 1
Aaron Vanek ($5.00, 70 page PDF)

Ten pre-generated characters for use as PCs or NPCs in the Call of Cthulhu (7e) RPG. Each is based on a real historical figure, with skills, attributes, and biographies created through extensive historical research. Each character is detailed on a redesigned CoC 7e character sheet with PDF autocalculating features. Each has both a print (black and white) and digital (color) version.

The Darkened Hermitage
Brendan Lahey ($4.99, 48 page PDF)

October, 1933. As the Royal Canadian Mail steamship pulls onto the quiet lake, the seemingly interminable forest gives way, revealing the tiny hamlet pressed up against the shore, framed on all sides by the rugged mountains of backwoods Quebec. You wonder what could make someone want to live in such a dismal little town, seemingly built in defiance of God and Nature. A bitter autumn wind blows through you as you wrap your jacket tight and turn the Professor's cryptic letter over, looking at the hurried handwriting once more. What could it mean?

A horror mystery scenario set in the forested hinterlands of Quebec, Canada. The investigators have come to speak to Dr. Ezekiel Freeman, an eccentric historian and folklorist as well as a true believer in a wide range of esoteric theories. The investigators arrive to the small hamlet of Le Fidèle to find out that something has gone horribly wrong - and the next boat to Montréal doesn't come for another two weeks. The forested mountains press in like the walls of a prison cell, and the investigators are trapped in this valley with whoever - or whatever - is responsible. To survive, the investigators must work to uncover this valley's dark secrets- and soon. Who can they trust?

Number 7 Dream
James Killick ($4.96, 26 page PDF)

The whole world seems against you - watching, waiting, observing - throwing obstacles in your way, closing some doors, while opening others - like it's guiding you, herding you, like it wants you to do something, remember something - but what?

A war veteran has received a letter from his daughter saying she has gone into hiding from bad people. She begs him not to go looking for her. But what else can he do? What father wouldn't? With his war-wound finally catching up with him, he asks the only people he can really trust for help - the investigators. A modern-day scenario set in the English city of Bristol but can be changed with minimal effort to another time or place.

Creature Feature: Sepulchral Shoggoths
Chitin Proctor ($1.50, 5 page PDF)

“So I prophesied as I was commanded: and as I prophesied, there was a noise, and behold a shaking, and the bones came together, bone to his bone. And when I beheld, low, the sinews and the flesh came upon them, and the skin covered them above: but there was no breath in them.”—Ezekiel ben-Buzi

Includes 3-page Monster Write-up & Stats and Spell: Create Sepulchral Remnants.

Trutz Blanke Hans
Florian Klamt (Pay-What-You-Want, suggested price $3.53, 16 page PDF)

A modular sandbox scenario with an investigative focus. It all begins on a cold January evening on the Hallig Südfall in the German North Sea. The investigators follow the call for help by a mutual acquaintance who is looking for open-minded people to aid him in a Séance. While the time of the setting can be adapted to the group’s liking, the investigators will soon find themselves in a vivid trip back in time to the 16th of January 1362 and a race against the merciless tides.

Miskatonic Repository Titles August 2021

Modern Era Scenario Bundle 2021 [BUNDLE]
Various ($29.23 $19.99, 6 PDF titles)

This special bundle product contains the following titles: The Unbearable Likeness, Little Torches, My Guardian Monster, The Great Healer, The Pipeline: A Call of Cthulhu Scenario for the 1980s, and Unremembered.

Cthulhu maps - The Lightless Beacon
Lovemaps (Pay-What-You-Want, suggested price $0.50, Map & Tokens)

You will find in this pack a large content of (grid and gridless) maps for The Lightless Beacon. You can print them out to play at a table or use them on a Virtual Tabletop.

Art for China - Masks of Nyarlathotep
Anna Zadrożna ($3.00, 20 page PDF)

25 art pieces for the China chapter of Masks of Nyarlathotep.

The Lo'thysss Duology [BUNDLE]
Various ($7.00 $5.50, 2 PDF titles)

This special bundle product contains the following titles: Test Subjects, and The Lair of Lothysss.

Lords by Birthright - a Zgrozy scenario
Marek Golonka, Piotr Kozioł, Keith Mageau ($3.49, 20 page PDF)

The Łukomski family was an influential noble house living in the Eastern part of what was once Poland-Lithuania in the early modern era. They were blessed with great charisma, and their servants were exceptionally devoted to multiple generations of the Łukomski family. Unfortunately, mental illness plagued the family. One evening, a confrontation with hired gunmen drags investigators into Łukomskis’ nightmare – but maybe they were a part of it even before?

A standalone scenario that can be run anywhere in the world in 1920's and, with a bit of tweaking, in other eras as well.

Miskatonic Repository Titles August 2021

Plus new titles in Catalan, Korean, and Spanish!

Michael O'Brien


This year's Miskatonic Repository Halloween Collection is live! 480 pages of Call of Cthulhu community content goodness. What's more, the bundle is 60% off until Halloween!

This year's bundle features Allan Carey's ENNIE Award-winning Hand of Glory, and scenarios and supplements by fellow independent creators William Adcock, C.M. Arnold, Pierre-Olivier Gagnon, Marek Golonka, Elizabeth Hildick, Bridgett Jeffries, Philip G. Orth, Leopoldo Rueda, Chris Stewart, and David Wright.

Bundles from 2020 and 2019 are back on sale at 60% off too, until Halloween!:

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