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Shadows of Yog-Sothoth
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Shadows of Yog-Sothoth

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The Silver Twilight is an international organization dedicated to the destruction of the human race. As brave Investigators, you must piece together passages from esoteric books, shards of ancient artifacts, and puzzling letters to discover the Silver Twilight's loathsome goals. This multi-chapter adventure begins in Boston and spans the globe. The Investigators must survive and conquer the mind-shattering monsters and minions of the Cthulhu Mythos. Come, journey through awesome realms of reality, and match your wits and sanity against diabolical lurkers in SHADOWS OF YOG-SOTHOTH!

This scenario book includes three new adventures for the Call of Cthulhu role-playing game. SHADOWS OF YOG-SOTHOTH is a seven-chapter tale of horror and suspense. Also included are two bonus scenarios: one is suitable for beginners and the other is perfect for experienced Investigators. Eight pages of Player Information include corrections and additions to the Call of Cthulhu rules and a very special centerfold!


Experience it with 7th Edition Call of Cthulhu. Get the rulebook here.

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Reviews (5)
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August 19th, 2016
I've been running Call of Cthulhu since 1981, and have more than four shelf-feet of published Call of Cthulhu stuff (including the original saddle-stapled version of this campaign). Of late I've been converting to PDF to enable me to prep games on my [...]
April 3rd, 2010
This was the very first campaign supplement published by Chaosium for the then-brand new "Call of Cthulhu" RPG. While I see where the other reviewers were coming from, I've run this one on several occasions for groups of players and they alwa [...]
March 19th, 2009
A bit of a railroad adventyure. It also needs adaption from the GM to connect the 7 different adventures to make it run smoothly. The combats are very deadly, and also need adjustment from a GM. Otherwise players need to generate a large number of PCs. [...]
December 13th, 2008
A - possibly 'the' - classic campaign for the Call of Cthulhu RPG. It is... merely okay.The campaign material ticks all the right boxes for a Cthulhu campaign - secret societies, sorcerers, ancient uncaring entities, etc. - but these are stitche [...]
October 25th, 2008
While preety good for its time, I found this adventure to be like the old monster mash monster in every corner AD&D adventure. While in my opinion this can be a good thing, in a game where your average monster can destroy your characters eas [...]
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Product Information
Electrum seller
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File Size:
23.86 MB
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File Last Updated:
June 14, 2004
This title was added to our catalog on June 14, 2004.