Sandy PetersenDiscover games that Sandy Petersen contributed to. Games listed on Pampa: 13.Games that Sandy Petersen contributed toCall of Cthulhu 7th Ed - Quick Start RulesCthulhu Mythos : L'Île aux GoulesL'Appel de Cthulhu - Les Abominations de PetersenRuneQuest - Bestiaire de GloranthaRuneQuest - Le Livre Rouge de la MagieRuneQuest - Le Livre Rouge de la Magie - CollectorCall of Cthulhu 7th Ed - Petersen's AbominationsCall of Cthulhu 7th Ed - S. Petersen's Field Guide to Lovecraftian HorrorsL’Appel de Cthulhu - Les Abominations de Petersen - PDFRuneQuest - Bestiaire de Glorantha - Version PDFRunequest - Cults of Glorantha: The ProsopaedaRuneQuest - The Red Book of MagicRuneQuest - Livret de Magie - Version PDF