Call of Cthulhu is Chaosium’s classic roleplaying game of Lovecraftian horror in which ordinary people are confronted by the terrifying and alien forces of the Cthulhu Mythos. Call of Cthulhu uses Chaosium’s Basic Roleplaying System, easy to learn and quick to play. This bestseller has won dozens of game-industry awards and is a member of the Academy of Adventure Game Design Hall of Fame. In 2001 Call of Cthulhu celebrated its 20th anniversary. In 2003 Call of Cthulhu was voted the #1 Gothic/Horror RPG of all time by the Gaming Report.com community. Call of Cthulhu is well-supported by an ever-growing line of high quality game supplements.

This is a softcover edition of this classic horror game, completely compatible with all of previous supplements for Call of Cthulhu. This is a complete roleplaying game in one volume. All you need to play is this book, some dice, imagination, and your friends.

950 A.D. — The world is torn apart: empires and kingdoms have endured two centuries of invasions, and now warlords fight over the remains like wild dogs. The clergy is weak and morally depraved, cities are depopulated, trade is stagnant and violence reigns everywhere. History is coming into the Sixth Age of humankind, the ultimate age before the end of the world.

The Byzantine Theodoras Philetas translated the Al Azif into Greek, and renames it the Necronomicon. It will take one century before that blasphemous tome is finally condemned, and most copies destroyed.

New to Call of Cthulhu? A battle-scarred veteran of many campaigns? Here are essential background articles useful to most keepers, including: The History Behind Prohibition, The Keeper's Master List of Call of Cthulhu Scenarios, Iron: a Survey of Civilian Small Arms Used in the 1890's, 1920's, and the Present, Medical Examiner's Report and more.

The death of Kyle Woodson seemed an accident, an autombile crash. When medical irregularities became apparent, and then the body was quickly cremated, the case became more sinister.

This 64 page 1990s scenario book can be played in two to three nights.

The Bermuda Triangle is a 1990s sourcebook centered around the famous mystery of the Devil's Triangle. It acts as a guidebook to the entire Caribbean region and exposes the mysteries of Rha'thylla, the Sargasso Sea, and more. Includes one scenario.

Pagan Publishing presents a new stand-alone scenario for Call of Cthulhu! Final Flight begins with a routine flight and ends with the passengers of Flight 101 trapped in the green hell of the jungles of South America. Was their crash really just an accident? Are they truly alone in the jungle?

We all dream. For some, dreams can become reality...

H.P. Lovecraft's Dreamlands provides everything needed for Call of Cthulhu investigators to travel down the seven hundred steps, through the Gates of Deeper Slumber, and into the realm of dreams. Includes a travelogue of the dreamlands, a huge gazetteer, dreamlands character creation rules, over thirty prominent NPC's, over 60 monsters who dwell within the dreamlands, descriptions of the dreamlands gods and their cults, six adventures to help jump start a dreamlands campaign, and a new fold out map of the Dreamlands by Andy Hopp. Hardcover.

Includes the Following Adventures:

Four stand-alone adventures, or as a change of pace when inserted into an ongoing campaign. Though suitable for beginning player characters, these adventures are dangerous, and incautious beginners will come to regret rash decisions.

LORE OF THINGS FROM BEYOND – Gathered from every professionally-published Call of Cthulhu book and scenario, Malleus Monstrorum is the most comprehensive collection of gods and monsters ever assembled for Call of Cthulhu. Entries for the monsters have been tweaked, edited, updated, and corrected. A few have been significantly expanded from previous descriptions. Entries are divided into the following broad sections:

For Call of Cthulhu 1920's

In dim forgotten recesses of the world lurk mind-twisting horrors. Through the use of human agents, these horrors work to thwart humankind's destiny.

However, not all of these human agents are willing partners. Many times have the monsters resorted to subtlety and intrigue to further their ends, rather than gross displays of wanton destruction.

Andrew Keetling is one such unwilling agent. A successful Boston businessman, he has disappeared and is now held captive, in a mansion of madness.

MISKATONIC UNIVERSITY is a small, seemingly typical New England college nestled in the bosom of conservative Arkham, Massachusetts. A poor cousin to such hallowed institutions as Harvard, Brown, and Princeton (the term “Ivy League” won’t come into use until 1936), Miskatonic nonetheless offers coveted degrees in a wide variety of subjects and boasts high academic standards.

Devotees of the Cthulhu Mythos and long time players of Call of Cthulhu know the name well, and greet it with a mixture of fondness and dread. A small, quiet institution of higher learning, Miskatonic serves as the home of many of H. P. Lovecraft’s greatest protagonists, or as the staging ground for daring expeditions into the unknown.

An all-new anthology of eight unconnected scenarios for Call of Cthulhu, ranging from 1900 to 1930. Find two lost archaeologists in the Andes, rescue a kidnapped starlet in Hollywood, investigate a bizarre photograph from rural Mexico, a case of insanity in a Kentucky mining town, and much more. Authors include Michael Cisco, John H. Crowe III, Dennis Detwiller, Jeff Moeller, Rebecca Strong, and John Tynes, with illustrations by Toren Atkinson, Dennis Detwiller, and Heather Hudson. Assembled by Brian Appleton.

There is trouble in Bethlehem....

Thousands of crows have taken roost in the woods surrounding Bethlehem, NH, mercilessly attacking anyone who tries to enter the forest. The human population is outnumbered more than ten-to-one, and the birds are growing more bold every day. Can the investigators solve the mystery behind this unnatural infestation? Can they save the town of Bethlehem from a disaster of biblical proportions?

Murder of Crows contains everything a Call of Cthulhu group needs for an evening's worth of Mythos-inspired fun, including pregenerated characters. It is the first in an innovative new series of Call of Cthulhu scenarios and supplements from Super Genius Games.

This book contains ten scenarios from the first ten issues of The Unspeakable Oath, most never before reprinted. Fight cultists in the cornfield, take a train ride with a murderer, find an occult children's book, explore a ruined abbey, and much more. Most scenarios are 1920s, with a couple of modern ones as well. All-new artwork throughout. Catch up on your reading and happy nightmares!

This source book collects nearly everything known about the Lovecraftian-style universe which Ramsey Campbell set in England's West Country. Chapters include Books and Artifacts, Cults, Denizens, Magic, and material on Britain and particularly the Severn Valley. Contains 8 scenarios organized into a loose campaign.

This Fright Night scenario pack is suitable for beginning keepers and investigators. The adventures can also be used by experienced keepers as interludes in a longer campaign. The scenarios in this supplement are short, providing four nights of fright!

Modern-Day Exploration of the Land of the Rising Sun

Welcome to the Land of the Rising Sun, where you will discover that the horrors of the Cthulhu Mythos are not limited to the West.

SECRETS OF JAPAN provides detailed information for playing CALL OF CTHULHU adventures in a modern Japanese setting. This book includes new character occupations, new spells, new monsters, new organizations, and rules for playing Japanese investigators. Also included are three adventure scenarios, two short stories, a glossary of cultural terms, details on Shinto and Buddhism in a CALL OF CTHULHU setting, extensive cultural background notes, and the secret history of Japan!

SECRETS OF KENYA introduces a portion of this vast and varied continent — three times the size of the United States, with a ratio of four Africans to every American alive during this era. Kenya provides a setting that can be both familiar and foreign. Settled by Great Britain in the 1900’s it is an English-speaking colony where all the trappings of home can be found in the capital of Nairobi. Beyond Nairobi’s limits, much of Kenya remains unexplored and virgin territory for investigations, and hidden horrors.

The first half of this book provides a civil, cultural, political, geographical, and Mythos tour of Kenya during the 1920’s and 1930’s, the remainder offers four longer adventures using this background. The majority of the material in this book is factual, though locations have been elaborated on for game play. Familiar resources such as police files, newspapers, libraries, and museums are harder to come by. When they are present, diminished resources are all that investigators can expect.

LOS ANGELES IN THE 1920s was a fast-growing, fast-moving city that encompassed all that was great and all that was rotten in America. Racial, ethnic, and religious melting pots presaged what the whole country would become by the end of the century. L.A. nonetheless clung to a veneer of White Protestantism more in line with farm-belt states in the Midwest. The newly-rich built pleasure palaces in her hills and on her beaches, while recent immigrants and the descendants of the first humans who walked the land huddled together in filthy shantytowns. These resembled the most squalid parts of the undeveloped world. Philanthropists endowed the city with impressive monuments and dreams of a utopian society, while greedy businessmen and industrialists crushed the labor movement and embroiled themselves in scandals that rocked the nation. Celebrated movie stars worked and played before the eyes of the world, while rum-runners and racketeers plied their trade behind the scenes in the land of noir, hand-in-hand with crooked cops and two-faced politicians.

Eastern sophisticates dismissed the city as an abode of the frivolous and the nouveau riche, yet underneath it all coursed an energy at once vibrant and unwholesome. Los Angeles was a place where anyone could reinvent himself, and multitudes did — at a price. It was also a place where dark and blasphemous secrets infested every level of society, belying the carefree and enviable lifestyle broadcast to the world. For behind the glitz and glamour of Tinseltown, primordial, inhuman forces and their twisted minions worked to undermine the very foundations of sanity.

In the remote reaches of the world are hidden secrets and dangerous mysterious. Learn of the ancient tradtions of Morocco, of its war torn cities, and its rebels. Venture through the land as it was in the 1920s and 1930s. This Call of Cthulhu roleplaying sourcebook contains the historical information and the Lovecraftian Mythos details to adventure in one of the world's most exotic lands. Included are maps, NPCs, new character occupation templates, several mini-adventures, and two adventures that can be combinded as a campaign, or readily used with existing campaigns. From the white houses of Casablanca to the dangerous Rift Mountains to the deadly depths of the Sahara desert, all of a land haunted by eldritch horrors will be revealed.

Secrets of New York is a compendium of one of the oldest and most renowned cities in the United States. This volume explores the strange events above and below the gridiron streets and avenues of the world's financial capital during the 1920s. With a plethora of characters to bring the city to life, and a detailed history to build scenarios upon, Secrets of New York is an indispensable tool for keepers and players playing adventures in Gotham. Included are maps and historical documents and photographs to bring 1920s New York City to life, as well as three scenarios that explore the most popular and less savory locales of this grand metropolis.

This resource guide provides background for a campaign setting in the San Francisco Bay area of the 1920’s, including urban geography, civic history, and research venues—where San Franciscans go when they break the law, go insane, or die—and sights, sounds, and secrets of a city that make it unique. It is more than a metropolis, it is a living entity whose unique character and changeable nature shape its atmosphere, its institutions, and its leading citizens. It is an excellent location from which to launch campaigns focusing on the Orient, and it possesses abundant research resources and outré locales for scenarios within its extensive boundaries, including the largest, oldest American enclave of Chinese settlers, the world’s most famous haunted house, and two of the most infamous prisons ever erected. Here is a complete a portrait of San Francisco in the 1920’s, with careful attention to the vast body of local folklore and unique opportunities for Mythos investigation.

A Global Call of Cthulhu Campaign to Save Mankind

The Silver Twilight is a secretive, international order dedicated to the destruction of the human race. As brave investigators, you must piece together passages from esoteric books, shards of strange artifacts, and puzzling letters to discover the Silver Twilight’s loathsome goals.

Shadows of Yog-Sothoth is a modestly-sized campaign of seven scenarios. During the course of play the investigators penetrate the outer layers of a secret sinister occult organization led by the lords of the Silver Twilight. Beginning in Boston they investigate an organization in New York, run afoul of a coven in Scotland, roam the desert of the American southwest, vacation off the coast of Maine, and explore the mysteries of the South Pacific.

Astronomers have theorized that our sun is not alone in its journey areound the galaxy, but is accompanied by an unknown second star of dim radiance. This second star, while perhaps invisible from Earth even with the finest optics, would periodically pass close enough to our solar system to have far-reaching effects upon the evolution of this planet.

This is a campaign-length adventure for 4-6 experienced investigators. The suspicious death of a former teacher draws the investigators into an adventure with cosmic import.

Originally published in 1982, this new edition includes modified episode scene changes, player-handouts guide for the keeper, and new illustrations and diagrams.

IT IS OCTOBER 1928. London is the capital of an empire covering a quarter of the globe and governing one quarter of the human race. The people busy themselves with concerns of politics and government, finance and production, work and recreation. How fragile things are. What ignorance there is.

TATTERS OF THE KING is a Call of Cthulhu campaign suitable for four to six investigators: ideally one should be a psychoanalyst or alienist and published in this field, and one or more of the others should be involved in the creative arts. It is convenient if the investigators live in or near London, but one or all can be foreign-based if they are prepared to travel to Britain to address events. Detailed advice on options for involving the player characters is provided.

That which is greater than mankind lurks beyond the rim of human consciousness, patiently watching, waiting to assume command of our destiny. We cower in our homes, quaking behind the false security of tall fences, locked doors, and television. But to no avail - the stars are right and cannot be denied. The Stars Are Right contains seven modern-day adventures that explore the pit of man's fears and the darkness of his soul.

Three mini-campaigns set in modern New York State. Investigators will be aided by mysterious allies, face the Cult of the Sacred Light and the Black Brotherhood. These scenarios can be combined to form a modern NY state campaign.

Join the Conspiracy — an unofficial, illegal faction within the United States Government, which has as its main objective one thing, and one thing only: to preserve and protect the citizens of the United States from any and all threats from paranormal phenomena, with the secondary goal of understanding the nature of said threats, so as to better protect the security of the people and government of the country.

Do You Know Who is Pulling The Strings? Delta Green knows. Things from beyond space and time, that titter in the shadows, the slow rot at the core of humanity, the dark stars that whirl madly above—these are the true masters of the world. Delta Green has been fighting them since the 1928 Raid on Innsmouth, and the fight still rages on… heedless of whether or not the stars are soon to come right.

Eos Press has joined forces with Pagan Publishing to bring back Delta Green, the critically-acclaimed roleplaying game of the Lovecraft Mythos in the modern age. Packed full of secret organizations, shadowy conspiracies and alien invaders, Delta Green now comes to you as a handsome hardbound book, durable and with all the material you need to play using Wizards of the Coast’s Call of Cthulhu d20.

NO FUTURE: Get used to the taste of ashes. Delta Green: Countdown blows the doors off the world of Delta Green, reaching wider and digging deeper to map the terrain of the twisted pulp apocalypse we call the dawning of the 21st century. Brace yourself for the final world order! Covers more occult weirdness than you can shake a fetch-stick at, including DG's counterparts in the U.K. and Russia. Plus three scenarios, more than a hundred international intelligence-agency templates, and scientific reports from a DG-friendly microbiologist on several Mythos creatures. And much more!

This third volume in the Origins Award-winning fiction line for Delta Green includes eight stories of horror and conspiracy. This time, the Cthulhu Mythos tales traverse the twentieth century--a grunt's-eye view of the 1927 Raid on Innsmouth, the terrible work of the Nazi Karotechia in WWII, the crushing miasma of Vietnam, and much more. Edited by Bob Kruger & John Tynes, with cover art by John T. Snyder. (312 pp.)

Thule, the Nazi Atlantis, legendary home of Aryan superbeings that ruled prehistory. Thule was supposed to be a Nazi myth, but when a defector from the SS occult sciences division, the Karotechia, brings proof of Thule's reality, Delta Green's course is clear: the alien city and its technological and occult secrets must be denied to the enemy at all costs. But the true masters of Thule are fighting their own war. A traitor from the past endangers their eons-old plan to shape the future. The survival of mankind depends on the fate of Thule; but to destroy Thule or save it? Which choice will save mankind? Written by Dennis Detwiller with cover Art by Samuel Araya.

An alien conspiracy 160 million years in the making.

A group so powerful, their leader may be a god.

An accident so terrible it threatens the past, present and future.

To DELTA GREEN, it’s just another Night at the Opera.

For the first time, all three of Dennis Detwiller's legendary DELTA GREEN: EYES ONLY chapbooks are collected into one deluxe hardcover volume.

A Cthulhu Mythos magazine, featuring adventures for the various eras (Modern, Dark Ages, Gaslight, Twenties), fiction, and advice for GM’s.

I shivered at the mysteries the past may conceal, and trembled at the menaces the future may bring forth. -- H. P. Lovecraft, "The Shadow Out of Time"

Worlds of Cthulhu is a magazine dedicated to supporting Call of Cthulhu, Call of Cthulhu d20, and Cthulhu Dark Ages roleplaying games published by Chaosium, Inc.

Worlds of Cthulhu #5 is the Summer 2007 edition of the respected Call of Cthulhu magazine.