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Chaosium was founded by visionary game designer Greg Stafford in 1975. For more than forty years, Chaosium has captivated gamers, readers and mythic adventurers worldwide. Its award-winning roleplaying games, boardgames and fiction have been acclaimed as some of the most engaging and innovative of all time.
From the dense jungles of Mexico to a lonely estate in the deep woods of Maine,a curse has awoken. It no longer slumbers through eons of time hiding from the eyes of men. Tonight, it lays claim to this house and all those who dwell within. Can you survive the rhythm of the Temple Drums and bring back the artifacts that you have been hired to acquire or will your souls be stripped and tormented forever?... [click here for more]
Matt is tired of his kid brother following him around everywhere.
Especially as he died three days ago...
Bring your players to the edge of terror with 'The Unbearable Likeness', our first Patreon-fuelled modern-day scenario. Can they discover the hidden forces behind Luke's sudden and very unexpected reappearance? Can they chase their quarry through the streets of Brooklyn? Where at first... [click here for more]
When searching in various places, including homes, desks and the pockets of corpses, characters may on occasion stumble across notes and letters that contain meaningful or important information. They may also find notes and letters that are not. This supplement contains 100 notes and letters that characters could find in Miskatonic Country, focusing in or about Dunwich (marked with "(D)") and Innsmouth... [click here for more]
When searching in various places, including homes, desks and the pockets of corpses, characters may on occasion stumble across notes and letters that contain meaningful or important information. They may also find notes and letters that are not. This supplement contains 100 notes and letters that characters could find in Miskatonic Country, focusing in or about Kingsport. They may be simple letters... [click here for more]
After thwarting a theft on the streets of 1890s Chicago, an old gentleman offers you a job of guarding his collection of strange artifacts while he is away. As the guard, your choices lead to mystery, mythos, magic, and even death while guarding... A Lone Collection.
Content Warning: solo rpg adventure -- meant for one player or one player and a Keeper.
Secondary Content Warning:... [click here for more]
The year is 2017 and your research team has been sent to the North West of England to investigate a mysterious outbreak of earth tremors in the area.
But things are more complicated than they first appear with the locals claiming the tremors are linked to a controversial fracking project, while those in power are eager to move forward with the drilling as planned.
Of course things take a dire turn... [click here for more]
For the past few weeks, summer school artist Cesar Dominguez has been dreaming of a strange world. Walking through a landscape of vivid colours and patterns, his vision pulsates in time with discordant melodies and whispers. Strange moving shapes in the corner of his sight have been urging him to share his visions with others, so they too can join in the harrowing beauty.
A Tableau of Red takes place... [click here for more]
In this scenario for the 7th edition of Call of Cthulhu, the investigators venture into 1920s Paris, and more specifically the red-light district of Pigalle and its scandalous Grand-Guignol, the theater of thrills and chills. They go there on the invitation of Mary Riley who makes her debut on its stage. However, after a performance as titillating as it is frightening, the young actress disappears... [click here for more]
After Dark - a modern scenario for Call of Cthulhu
After Dark is a new reality show, looking to cash in on the popularity of 'real' hauntings. You're hoping to cash in too, as contestants in the very first episode. Details are sketchy; you know you're being taken to spend two nights in a haunted location somewhere in Maine, there will be some sort of challenges to complete there, and there will... [click here for more]
AL-AZIF UNEARTHED: THE UNRAVELING
"Al-Azif Unearthed: The Unraveling was a blast to run and a pleasure to read. From the perspective of a Miskatonic Repository creator, it should also be used as a standard for how to present community-made work. It’s hard to state how good it looks. Even if you, as a creator, are not interested in running the scenario, it has... [click here for more]
AL-AZIF UNEARTHED: THE UNRAVELING**********In the summer of 1925, a classified ad appears in the Boston Globe promising an ancient near-eastern jar containing a mysterious scroll. Working on behalf of the Miskatonic Exhibit Museum to verify the artifact’s legitimacy, the investigators travel to a venerable hotel in the old city’s downtown to meet with... [click here for more]
Alpaca in the Coffee: A modern Call of Cthulhu scenario
How would you react when the last person who'd ever use violence, turns violent? Something is very wrong with the coffee. Can the investigators unravel the mystery and confront a burgeoning sentience before it causes the city to tear itself apart?
Alpaca in the coffee is a modern scenario set in Leith, part of Edinburgh in Scotland. It is an... [click here for more]
A plane has crash landed on a small island, a storm is approaching and there is no hope of rescue until morning. But the survivors are not alone on the island. A dark nightmare is hunting them. Can the investigators figure out which of the passengers is responsible before they themselves are consumed and an ancient ritual is completed?
Alpaca on a Plane is a convention length (3-5 hour) Whodunit adventure... [click here for more]
Archives of Terror
A Call of Cthulhu scenario of paranoia and surveillance
by Christopher Dimitrios
This is an adventure for Call of Cthulhu 7th Edition, set in Romania in 1990. It draws on themes of political surveillance, paranoia, conspiracy, obsession, and personal guilt. It takes inspiration from Romanian culture and history, specifically religious philosophy and the communist secret police.
An... [click here for more]
It contains Japanese version (6th) and English version (7th). このコンテンツには日本語版(6版)と英語版(7版)が入っています。
本シナリオは『クトゥルフ神話TRPG6版』に対応したシナリオである。プレイ時間は探索者の創造を含めないで、1時間から2時間程度を想定されており、プレイヤー1～2人向けにデザインされている。本シナリオはクトゥルフ神話を遊んだことがあまりない初心者向けのシナリオである。『クトゥルフと帝国』のサプリメントを使用すれば、さらに楽しめるだろう。... [click here for more]
Winner of Storytellers Competition by Miskatonic Playhouse - Bronze
A Modern Call of Cthulhu Scenario
“A good sandbox scenario about a culture and setting that we don’t get to see very often. Some unusual choices like the spotify playlist really makes this one stand out.” - Miskatonic PlayhouseBaba Dochia is a... [click here for more]
Beach Blanket Bloodbath and Worse Tales contains five foul and depraved Call of Cthulhu adventures. Feast your eyes upon this cornucopia of the loathly transmundane and be amazed!
Written by Jim Thomson, author of Blood Orgy on Vampire Island, Tales From Ye Dusty Olde Crap Shop and yet less distinguished works, these five scenarios cover a wide spectrum of settings, tones... [click here for more]
Gain and Loss of a Different Sort…
Investigators are always seeking strange places, dark matters, and forgotten tomes and artifacts, but how are they supposed to afford all that travel and commerce? How could this affect their future purchases? Is there some method to judge that?
The answer is yes, and it lies in this small supplement for Call of Cthulhu intended to help... [click here for more]
February 1992, the newly-independent country of Ukraine still has nuclear warheads on its territory, and now one has gone missing. An international group of intelligence officers and scientists must find the culprit, leading them into the dark and nightmarish world of the Chernobyl Exclusion Zone.
Broken Arrow: Chernobyl is a Call of Cthulhu 7th edition scenario designed for 2-6 players,... [click here for more]
The Old Carlisle House outside of town is haunted, and everyone knows it. Ten years ago a gruesome murder took place there. Since then, local youth say you can still see the ghost of Mrs. Carlisle walking the halls.
Randy just moved in, and he's nothing if not excited about the idea of living in a real haunted house! When he starts to realize that it may really be true, he... [click here for more]
A year after the investigators defeated a daemon-summoning cult, their allies have been in touch. Murder, arson, disappearances. Could the Siblings of Burning Desire be back? The investigators must return to the scene of their former victory and get to the truth lest disaster befall them, their friends and everything they hold dear.
Burning Desire is a modern... [click here for more]
WHAT IS BUSILAK Here in the Philippines, everyone has heard their own share of ghost stories. Whether they were experiences one had, stories shared by relatives, or anecdotal tales of a friend of a friend’s friend, everyone has had their own share of strange experiences and creepy tales. Superstition remains rampant, even among the religious and the intelligent. Perhaps it stems from the belief... [click here for more]
This is an Investigative Modern Day scenario that can be played as a One-shot, or, inserted as a short scenario in a pre-existing campaign.
It is specifically designed for new players with several routes of investigation that lead to the conclusion of the story.
When the Police find eight severed hands and seven bodies with the left hand missing, they realise that... [click here for more]
A Tale of Survival to make your blood run cold...
The Ottawa Mountain Ski Lodge in Northern Michigan is a wonderful place for Investigators to relax and unwind. However, wintertime is fickle in the North, and blizzards can serve a serious hazard to anyone caught in the middle of them. Roads shut down, snow covers doorways and buildings, andanimals are frozen solid. And above... [click here for more]
A Call of Cthulhu adventure of lost media
Employed by a wealthy collector of rare pieces of cinema, a group of investigators travel from New York across the globe in order to track down the only surviving copy of a previously lost film - a cinematic recording of "The King In Yellow"...
They are not alone in seeking this elusive recording.
Cages... [click here for more]
Come home again!
Hometown Horrors, Vol. 2 contains 16 more tours of the uncanny, the astonishing, the unwholesome, and the terrifying towns that our contributors call home. From the Midwest to the Southwest, from the Arctic Circle to the sunny Mediterranean, these brief guided tours will fire the imagination of Keepers and players alike.
Each entry contains:
a short... [click here for more]
Camp Hollow Lake – A Modern Call of Cthulhu Scenario
Camp Hollow Lake is set in the modern day and is designed to recreate the feel of a typical slasher film, including all its clenches. Four pre-generated investigators are provided, each with a secret which can help the investigators piece together what is going on at Camp Hollow Lake.
Camp Hollow Lake is designed for up to 4... [click here for more]
Welcome to the Carcosa Carnival.
We’re so happy that you’ve come to play with us. We’re going to have some good, funny times...
A group of post-apocalyptic survivors seek supplies and their missing friends in an abandoned carnival. Once inside, the Investigators find themselves unable to leave. Their only chance for escape is to interact with the Carnival’s malicious, cruel and treacherous... [click here for more]
Great for new players and keepers! Not too many NPCs to keep track of and easily expandable. The story works best with 1-4 but can still work well with 5+ new investigators or imported ones. This story typically takes one or two sessions to complete and is easily expanded.
Sunday, October 13th, 1996, agents from the FBI headquarters in Washington D.C. are sent to the small town of Fogwood Oregon... [click here for more]
Children of the Tides explores the small town of Oak Hill, FL. Visit this quaint Florida town, where friendly locals seem just a little bit off and things become terrifying during the night. Don't forget to visit Manny's Alligator Center, and check out the gators while picking up a few souviners.
Take part in the adventure, as a your small group's vechicle breaks down, as you... [click here for more]
Davae Breon Jaxon'sCinematic Environs begins a new series of supplements designed to help Call of Cthulhu Keepers paint vivid cinematic scenes for their players in a way that gives the environment its own unique character. These environs can take a mundane encounter or location and turn it into an epic scene that the players will be talking about for year... [click here for more]
Welcome to the Alaskan Triangle!
An abandoned fishing boat stranded in the cold alaskan coast. A crime that seems to be a random act of violence. A mystery that roots deep into the local folklore. When you are one of the first to accidentally arrive at the crime scene, you quickly become convinced that it is part of something much more sinister. There are things unspeakable for the... [click here for more]
Contact is a modern scenario for Call of Cthulhu 7th Edition. It is designed to be played in a single session and is intended for small groups of investigators. Over the course of the scenario, the players will investigate a missing persons case and his mysterious disappearance. They will unravel the missing person’s connection to a group of alien conspiracy theorists and one man... [click here for more]
This will make your life easier
Using images and fonts from the Creative Commons domain and a lot of time and effort, I produced these 15 documents that can be used during the investigations of the '' Crimson Letters '' Scenario. Some of them have more than one variation, totaling 34 files, and you can choose the one that best suits your adventure.
In the PDF file, I explain in... [click here for more]
Oddball mythvestigators gathered by eccentric lore expert Mr. Ed use conventions to disguise their exploration of mythos rumors. In June 2023, they meet under cover of RageCon in Reno, Nevada by day and hunt for a cemetery-lurking mythos creature by night.
Content warning: drug use, mental illness, ghosts, inappropriate humor
6 pregenerated characters
6 player handouts
1 map... [click here for more]
This special bundle product contains the following titles.Miskatonic Repository Anime-PunkRegular price: $10.00 Bundle price: $8.00 Format: PDF “The brightest light casts the darkest shadow.”
Jess C Scott: The Darker Side of Life
Whether you like your anime with demons and supernatural elements or just straight up modern dystopia in your Cyberpunk... [click here for more]
Call of Cthulhu goes into the Backrooms
A job offer that will take you to the stars and back after intensive and top-secret training will prepare you for the trip. Now all you need to do is succeed in leaving Earth or getting back to it.
A one-shot Call of Cthulhu adventure set in modern days.
In this Cthulhu adventure set in modern times, a group of would-be explorers will explore space. Not outer,... [click here for more]
Dark Visions From Beyond is a magazine with its structures based on the Cthulhu Mythos, dedicating its pages to the insanity of Call of Cthulhu 7th.
Here you will find:
The Alienist: A 12-page article delving into the Alienist's occupation, providing inspiration for players and Keepers with a broad background, occupational and personal... [click here for more]
A heavy rain storm has forced the investigators to seek shelter in the outskirts of the Massachusetts town of Talus in the Berkshires. While they find shelter in a seemingly abandoned house, once owned by the Richards family, it might hide more secrets than it cares to advertise.
This is a modern day scenario for Call of Cthulhu 7e.
... [click here for more]
Division 13 is the epitome of paranormal investigations and supernatural adventures, bringing an elite team of specialists together to tackle the mysteries that lurk in the shadows. With a rich tapestry of characters, including astrophysicists, tech geniuses, detectives, forensic pathologists, and occult scholars, Division 13 forms a unique, diverse task force capable of handling the most enigmatic... [click here for more]
What happens when an algorithm is trained on data corrupted by cosmic evil? ALChat is a real-time data-mining generative AI with a malign intelligence. Just as a diffusion model destroys data to create images, ALChat murders the living to create new synthetic life. In this modern Call of Cthulhu scenario, the investigators must solve the mystery by navigating a rapidly shifting metaverse, investigating... [click here for more]
Myths of the Kalevala, iron age bog grave and epidemy of madness are connected in this present-day adventure. Cthulhu mythology lives in dark corners of Finland and investigators will meet both academic challenges and great danger..
This scenario is part of the Northern Lights and Darkness collection. Scenarios in this collection share the common traits that they are set in a Nordic country, written... [click here for more]
Two dark entities — one created by an unnatural disaster, the other ancient — vie for the body and soul of a rising rock star in ’90s Detroit.
Investigators have five nights to face these dangers before an apocalyptic performance that will change the world.
The adventure is intended for three to five investigators over the course of two sessions, and can be used to continue an existing campaign... [click here for more]