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Call of Cthulhu 7th Edition - Keeper's Rulebook

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Chaosium's 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 world from the stars. They sleep now, some deep within the earth or beneath the sea. When the stars are right they shall again walk the earth.

Call of Cthulhu is Chaosium's tabletop roleplaying game based upon the worlds of H. P. Lovecraft. It is a game of secrets, mysteries, and horror. Playing the role of steadfast investigators, you travel to strange and dangerous places, uncover foul plots, and stand against the terrors of the Cthulhu Mythos. You encounter sanity-blasting entities, monsters, and insane cultists. Within strange and forgotten tomes of lore you discover revelations that man was not meant to know. You and your companions may very well decide the fate of the world.

This book, the Keeper Rulebook, contains the core rules, background, guidance, spells, and monsters of the game. It is intended for use by the Keeper of Arcane Lore (the Keeper) — that player who will present the adventure to the other players. You must have at least one copy of this book to play Call of Cthulhu. The other players, the Investigators, should have one or more copies of the Investigator Handbook, containing expanded rules for character creation, skills, occupations, equipment, and more.

Call of Cthulhu, 7th edition, is backwards-compatible with all other available Chaosium titles with details conversion rules for earlier versions.

Character Sheets for 7th Edition Call of Cthulhu can be found here

What the Critics Say

"The stars are right for the best edition of the best role-playing game in the world."—Antonios S. Review, RPGNet.

"Call of Cthulhu is now the Pepsi of RPG franchises, alongside D&D’s Coke, and the game’s success is part of the revival of Lovecraft and Lovecraftian fiction."—Paul StJohn Mackintosh, “The Legacy of Lovecraft”, Greydogtales.

"The Call of Cthulhu RPG has been in print from the same publisher since 1981. It is the horror RPG that all other horror games are judged by."—Powell’s Bookstore, Portland OR.

"Call of Cthulhu has been called “one of the best roleplaying games of all time” (Geek & Sundry). But something that’s overlooked about this classic horror RPG… is that it’s also one of the most versatile and well-researched historical RPGs around... I mean honestly, you can now play CoC in more time periods than your average season of Dr Who. "—Games Vs Play

"…one of the most iconic tabletop roleplaying games of all time."—Catholicsay.com

"The ultimate horror RPG, Call of Cthulhu is a stone-cold classic of the tabletop."—Tabletop Gaming Magazine (UK)

"It almost destroyed my life and career"—George RR Martin (Game of Thrones, etc)

2016 UK Games Expo Awards - Best Roleplaying Game

2017 ENnie Awards - Best Production Values (Gold)

2017 Beasts of War Awards - Best RPG

2017 Tabletop Gaming Magazine 'Top 150 Greatest Games of All Time' - Ranked #3, after D&D and Chess (Reader Poll)

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Reviews (7)
Discussions (21)
Customer avatar
julie L October 25, 2024 2:13 pm UTC
Any chance of a POD on this site. I prefer ordering from here because it goes straight to my mailbox and I don't have to worry about porch pirates when working.
Customer avatar
Ben F August 23, 2024 5:57 am UTC
PURCHASER
Just a heads up, been this way since the 40th Anniversary release, but the hyperlinks are busted. Hyperlinks and bookmarks go to wrong pages and the hyperlinks themselves are a few pages off in both the regular and reduced size PDFs.
Customer avatar
Micheal B September 19, 2022 11:44 pm UTC
I'll wait for the POD.
Reply
Customer avatar
Michael O December 18, 2023 9:22 am UTC
PUBLISHER
The physical version of the Keeper Rulebook is available at the Chaosium website, and in retail distribution. It is off-set printed, not POD.
Customer avatar
Jeremy H July 27, 2022 3:13 am UTC
Probably OT, but maybe you folks can help me. I purchased CoC back in the day (90s?). In that ancient edition, there was a list of Lovecraftian adjectives as an appendix. I'm looking for a similar list to aid my writing. Is there a standalone product that provides writing tips such as said adjectival fuel and adventure hooks? TIA.
Reply
Customer avatar
Stephen D July 21, 2023 6:00 pm UTC
I think someone posted this from the 4th edition sanity quiz: https://forums.giantitp.com/showthread.php?111510-Lovecraftian-adjective-listing
There's a sentence generator here: https://perchance.org/el38ptoigg
And a phrase generator here: https://www.wyrmworld.com/interactive/lovecraft/lovecraft.html

Aberrant, abominable, absurd, abysmal, acidic, adhesive, airy, alien, ambiguous, amorphous, anarchic, ancient, angular, animated, animalistic, anomalous, antediluvian, appalling, appendaged, ashen, askew, astounding, atrocious, awry;

Baboon-like, baleful, baneful, bankrupt, barbarous, beastly, bellowing, bilious, blasphemous, bleating, bloated, bloodshot, blubbery, boiling, brutish, bug-eyed, bulbous;

Cackling, cadaverous, cancerous, cellular, changeable, chattering, coarse, colossal, colorless, chaotic, confusing, congealed, conical, convoluted, corpulent, corpse-like, corrupt, creamy, criminal, croaking, crystalline, cylindrical;

Dank, dark, dazzling,...See more
Customer avatar
Brittany S April 05, 2022 3:37 am UTC
PURCHASER
To hopefully save someone from making the same mistake I did, this is the 7th edition CORE rulebook. Just because it's branded "Keeper's Rulebook", it is NOT some sort of "Dungeon Master's Guide" equivalent, like I'd thought. But ultimately I can't be mad at giving money to this company.
Customer avatar
James L August 30, 2021 9:41 pm UTC
Why in the 7 hells is THE single greatest Cthulhu Rulebook NOT on sale for the CTHULHU SALE??!
Reply
Customer avatar
Rick M September 09, 2021 1:48 pm UTC
PUBLISHER
It doesn't need to be on sale to be worth purchasing.
Customer avatar
Ed S September 17, 2020 1:41 am UTC
PURCHASER
I appreciate the updated pdf, but could you mention what has actually been changed?
Customer avatar
Dave T October 11, 2019 11:33 am UTC
Here is a video review that I made of the 7e system as a whole:

https://youtu.be/XZSFlwU_C0Y
Customer avatar
Robert L March 24, 2018 10:44 pm UTC
PURCHASER
Any chance for a printer-friendly version? Even printing out a few pages drains the toner in my printer. Also, why do those who purchase this title throuch chaosium.com get the ePub/MOBI version and those of us who purchased it here do not?

Cheers, Bob
Customer avatar
Cherch I October 04, 2017 5:58 pm UTC
I am interested in this rulebook, but I would like to get a hard copy as well. Would you consider that option in the near future?

Thanks a lot
Customer avatar
Joshua R July 02, 2017 7:54 pm UTC
PURCHASER
Anyone else had an issue with the PDF version of this opening REALLY SLOWLY? I've tried it on multiple devices and with multiple apps on my tablet (where I prefer reading RPG books), and even if I download the file, it seems every time I open it to read, it has to refresh or reformulate the images and text. It's laborious and makes reading it a pain, because every three pages are blank when I turn to them, until it can "refresh" everything and appear. Is it just me? I've downloaded the most recent version according to my library information.
Reply
Customer avatar
Robert L August 28, 2018 4:08 pm UTC
PURCHASER
Welcome to the world of full color .pdfs. The richness of this book in particular takes its toll on load time.
Reply
Customer avatar
Sean S March 15, 2020 6:27 am UTC
Book is super bulky and slow. I cracked mine open and removed all the extra images in the background of each page that aren't even viewable. Cut file size in half and made it readable on my tablet. There is a LOT of digital slop in this book.
Customer avatar
Vanderson T February 28, 2017 12:41 pm UTC
PURCHASER
I can't open this pdf in adobe or any other devices ....
Reply
Customer avatar
C February 28, 2017 3:34 pm UTC
PUBLISHER
Good Morning Vanderson T

We're sorry to hear you are having difficulty with the Call of Cthulhu 7th Edition Keepers Rulebook PDF. Please email us at customerservice@chaosium.com and let us know what browser you are using, what sort of computer you are using, and which version of Adobe Acrobat you are using so we can trouble shoot the problem and help find a solution.

Thank you!
Dustin Wright
customerservice@chaosium.com
Customer avatar
Sean B June 19, 2016 3:52 pm UTC
PURCHASER
I can't get this PDF to work in Adobe. Keep getting a warning message that Acrobat can't download some embedded font and then get told that Acrobat ran out of memory. None of the fonts are on the page, unless it's zoomed in to some useless degree and even then, if I scroll or flip to another page, the fonts are gone again. The bookmarks have no labels. Other PDF's do not have the problem. Garbage file.
Reply
Customer avatar
Sean B June 19, 2016 11:53 pm UTC
PURCHASER
Downloaded the file again just now and it works fine. Quick turnaround! Disregard above.
Customer avatar
KONSTANTINOS A V April 25, 2016 11:20 pm UTC
PURCHASER
Anyone knows what the update includes?
Customer avatar
Mathew H April 18, 2016 6:28 pm UTC
PURCHASER
I'm posting here to make sure no one else makes the same mistake i did.
This book should have been called the CORE RULEBOOK, as it contains everything needed for both the keeper and investigators. Had I known this i wouldn't have bought the Investigators Guide, which is supplemental.
Reply
Customer avatar
Daniel P December 09, 2019 6:41 pm UTC
Supplemental, but, in my opinion, indispensable.
Reply
Customer avatar
Mathew H January 02, 2020 4:07 pm UTC
PURCHASER
I really wish i could delete my above comment. But yes, i agree with you.
Customer avatar
David S March 03, 2016 1:13 am UTC
How many pages is this book?
Reply
Customer avatar
Daniel P December 09, 2019 6:42 pm UTC
488, it tells you on the right at the top.
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Product Information
Adamantine seller
Pages
488
ISBN
9781568824307
Publisher Stock #
CHA23135-PDF
File Size:
195.77 MB
Format
Original electronic Click for more information
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File Last Updated:
May 25, 2023
This title was added to our catalog on June 11, 2015.