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Petersen's Abominations has been unleashed in PDF.

Posted by Michael O'Brien on 25th Nov 2017

Gathered from across the aeons, Petersen's Abominations brings together is a collection of modern day scenarios from the twisted imagination of the creator of the Call of Cthulhu RPG himself, Sandy Petersen. Ably assisted by Mike Mason, Call of Cthulhu line editor, each one-shot scenario i … read more

ENnies spotlight: S. Petersen's Field Guide to Lovecraftian Horrors

Posted by Michael O'Brien on 16th Jul 2017

S. Petersen's Field Guide to Lovecraftian Horrors, aka The Petersen Guide, was the first collaboration between Chaosium and Editions Sans Détour, the French licensee for Call of Cthulhu. Christian Grussi and his talented team of artists - Loïc Muzy, Mariusz Gandzel, and Claire Delépée … read more

GREG STAFFORD & SANDY PETERSEN REJOIN CHAOSIUM INC.

Posted by Greg Stafford on 2nd Jun 2015

While we wanted the Kickstarter backers to hear this directly from us first, we also wanted all of you, the faithful, to get this information as soon as possible. Here is what we sent out. More very soon.We have pressed the reset button.In 1975 Chaosium started out as a quirky boutique game company. … read more