Chaosium Inc
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Chaosium Inc
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Steampunk Cthulhu: Mythos Terror in the Age of Steam (T.O.S.)
Call of Cthulhu Anthology, Paperback
Mythos Terror in the Age of Steam “We live on a placid island of ignorance in the midst of black seas of infinity, and it was not meant that we should voyage far. The sciences, each straining in its own direction, have hitherto harmed us little; but some day the piecing together of dissociated kn...... More
Released 15 July 2014
Eldritch Evolutions (T.O.S.)
Call of Cthulhu Fiction Anthology, Trade Paperback.
26 Weird Science Fiction, Dark Fantasy, & Horror Stories ELDRITCH EVOLUTIONS is the first collection of short stories by Lois H. Gresh, one of the most talented writers working these days in the realms of imagination. These tales of weird fiction blend elements wrung from science fiction, dark...... More
Released 10 May 2011
Blood Tide: Black Sails and Dark Rituals
Basic Roleplaying Piracy Supplement
THE GOLDEN AGE OF PIRACY is a time when men turn their hands against each other and the seas and coasts are splattered with blood. The wars that ravaged Europe are over, but peace brings new problems. Thousands have been displaced or orphaned, their homes and lands ruined or claimed by others. Ma...... More
Released 16 September 2014
Enlightened Magic
Basic Roleplaying Magic Supplement
ENLIGHTENED MAGIC details two magic systems for Basic RolePlaying — Enlightened Sorcery and Enlightened Alchemy. Fully compatible with Basic RolePlaying, these systems are a departure from the magic typically presented in role-playing games, which was inspired by magic as depicted in fantasy novels,...... More
Released 05 August 2014
Advanced Sorcery
Basic Roleplaying and Magic World RPG Sorcery Systems Supplement
It had taken days for Curumir to attain the summit of the Copper Peaks. He stood at the highest point in the realm, casting his gaze across the land. There was a sickness in the valley; a sickness fey and malign. Black mist crept from Lake Nauriel, and the Count s Court had fallen silent. In his mi...... More
Released 15 April 2014
Keepers Companion 2
Call of Cthulhu sourcebook softback
New to Call of Cthulhu? A battle-scarred veteran of many campaigns? Here are essential background articles useful to most keepers. • "The History Behind Prohibition" — A lengthy article bringing anti-alcohol advocates, law enforcement, gangsters, rum-runners, and consumers into focus. Lots of go...... More
Released 01 January 2003
Horror on the Orient Express Screen (T.O.S.)
Horror on the Orient Express Screen
A two-panel Keeper Screen mounted on thick hardcover stock that folds out to 22” wide. Contains varied and useful tables and rules pertinent to playing the Horror on the Orient Express campaign....... More
Released 12 May 2015
Atomic Age Cthulhu (T.O.S.)
Call of Cthulhu RPG Sourcebook
Mythos Horror in 1950s NEVER BEFORE had the world faced a threat as potentially devastating as the A-bomb—and the even more lethal H-bomb that followed. Educational films showed how to “survive” a nuclear blast by crawling under a desk, as if a few inches of wood made any difference. In movie the...... More
Released 05 March 2013
Cthulhu Invictus Companion (T.O.S.)
Call of Cthulhu RPG Cthulhu Invictus Scenarios
As Rome’s influence spread throughout the known world, so too spread the worship of its gods. Roman leaders knew that converting the people of conquered regions to the state religion would make them easier to control. But some gods have been worshipped longer than Rome has existed, and their supplic...... More
Released 05 April 2011
Malleus Monstrorum (T.O.S.)
Here are those things which can “eternal lie”, and which have lived beyond human understanding for strange aeons. The CTHULHU MYTHOS is comprised of a complex and broad group of sometimes-contradictory entities, powers, and concepts that encompass the secrets of time, space, and the universe. Fundam...... More
Released 20 December 2006
The Stars Are Right (T.O.S.)
Call of Cthulhu Adventure, Softcover
THE NEW MILLENNIUM: a time wracked by violence, racism, AIDS, drug abuse, and all-consuming fear. Hollow politicians offer empty promises of the bright future — a thousand points of light which none can see. That which is greater than mankind lurks beyond the rim of human consciousness. It patie...... More
Released 21 December 2004
Horror on the Orient Express (T.O.S.)
Legendary and Massive Call of Cthulhu RPG Campaign
MAN DIES THREE TIMES IN ONE NIGHT! A puzzling headline begins a front-page article found in the Times of London. Three men, all identical in identification, were found dead in the same room of the Chelsea Arms Hotel. All were dispatched in a similar manner—stabbed through the heart. Then the h...... More
Released 06 January 2015
Secrets of Tibet (T.O.S.)
Call of Cthuhu RPG Sourcebook
An Unknown Land of Mythos and Mystery TIBET is a common term used in the western world to refer to a remote plateau situated north of the Himalayan mountain range in Asia. A land of high-altitude peaks, some areas are impossible to reach without modern technology. The land is populated with male...... More
Released 29 January 2014
Ripples from Carcosa: Call of Cthulhu RPG (T.O.S.)
Call of Cthulhu RPG Scenarios
“O do not seek to learn or even ask, What horror hides behind…The Pallid Mask!” Lin Carter, “Litany to Hastur” Three Scenarios Exploring Hastur, Carcosa, & The King In Yellow Of all the varied and mysterious Great Old Ones of the Cthulhu Mythos, few ensnare the imagination as easily as Hastur....... More
Released 16 September 2014
House of Rlyeh (T.O.S.)
Call of Cthulhu RPG Five Scenarios
Five Scenarios Based on H.P. Lovecraft Tales The House of R’lyeh contains five Call of Cthulhu scenarios that follow or expand upon events in five of H.P. Lovecraft’s stories: “Pickman’s Model”, “The Haunter of the Dark”, “The Hound”, “Arthur Jermyn”, and “The Nameless City”. Set in Boston, Provi...... More
Released 30 April 2013
Cthulhu Invictus (T.O.S.)
Call of Cthulhu RPG Supplement
Horror Roleplaying in Ancient Rome ROMAN CHILDREN TREMBLE in their beds as their mothers tell them stories of Medusa, the Hundred-Handed Ones, and the War of the Titans. They pray that the Fates have woven a long skein for them, free from encounters with the Minotaur and Cerberus. Little do they ...... More
Released 15 March 2011
Call of Cthulhu 7th Edition Keeper Rulebook (T.O.S.)
Call of Cthulhu RPG 7th Edition Core Rulebook
Horror Roleplaying in the Worlds of H.P. Lovecraft The Old Ones ruled the earth aeons before the rise of man. Traces of their cyclopean cities can still be found on remote islands, buried amid the shifting desert sands, and in the frozen wastes of the polar extremes. Originally they came to this wo...... More
Released 05 July 2016
Keepers Companion 1 (T.O.S.)
Essential COC Resource
The Keeper's Companion vol. 1 is an invaluable resource for Call of Cthulhu keepers. New material includes advice for new keepers, a lengthy study of Mythos artifacts, a learned discussion of many occult books, an up-to-the-moment description of every facet of forensic medicine, a thorough revision ...... More
Released 23 May 2009
Cthulhu by Gaslight (T.O.S.)
Call of Cthulhu RPG Sourcebook for Horror Roleplaying in 1890s England
IN THE 1890s, Cthulhu and his minions share the globe with the mighty British Empire. But they owe allegiance to an empire of their own — a dark and cruel design on ownership of the world and on the dreams of humanity. Even among the green fields of rural England, only thoughtful and energetic inter...... More
Released 24 April 2012
Masks of Nyarlathotep (T.O.S.)
Call of Cthulhu RPG Adventures
At last the stars are almost right! Soon Nyarlathotep's plans will come to fruition. Then the world will be changed irrevocably — but not quite yet. Pesky human investigators have learned much. Now they must survive long enough to make sense of what they know, and take resolute action. Masks o...... More
Released 16 November 2010

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