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Petersens Field Guide to Lovecraftian Horrors - PDF

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A Field Observer’s Handbook of Preternatural Entities and Beings from Beyond The Wall of Sleep!

Chaosium Unveiled: Inside Petersen's Field Guide to Lovecraftian Horrors

Watch the unveiling video to see the book for yourself. Remember that you get the PDF when getting the physical copy.

Weird shapes in the park? Odd rumbling noises in the basement? A lurking dread in the kitchen? Bad dreams involving strange adventures and bizarre creatures?

Identifying the lurking horrors of the Cthulhu Mythos is never an easy task, so researchers need all the help they can get—don’t leave home without the Field Guide!

What's Inside

Penned by Sandy Petersen, the creator of the Call of Cthulhu roleplaying game, Petersen’s Field Guide to Lovecraftian Horrors is the essential spotter’s guide for the budding and experienced preternaturalist.

Marvelous Monsters

Deep One

Over 50 beasts of the Cthulhu Mythos are detailed and categorized with background information, size comparison charts, habitat and lifestyle notes, and much more. Each entry is accompanied by a full-colour illustration of the dreaded entity.


Rules Free


Petersen’s Field Guide To Lovecraftian Horrors is completely rules-free. You can use it to inspire your own Call of Cthulhu (or RuneQuest or 7th Sea!) scenarios, or the book itself can be used as an in-game prop—a tome of forbidden knowledge!


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What The Critics Say

2017 ENnie winner - Petersen Guide for best monster and interior art

  • "One of the most gorgeous books of this type that have ever been published for a role-playing game."

    — Antonios S, RPGNet Review.

  • "A lovely hardback… full colour, muscular and imposing, weird and unearthly, strange and shocking. …attractive to own, sometimes to peruse, sometimes to show off, sometimes to inspire."

    — Reviews from R’lyeh, Horrors for Halloween.

  • "There are Cthulhu Mythos monster books aplenty, but Petersen’s Field Guide stands out."

    — Graeme Davis, My Top Five RPG Monster Books.

  • “I bought this book for the artwork, but found that the text was delightful… It’s a coffee-table book for people who love monsters. Sure, any Keeper worth their salt will filch the art to show to their players at the game table, but this tome’s natural habitat is in the vicinity of a couch, on a rainy day, with the aroma of coffee wafting across from the kitchen. Enjoy.”

    — Stygian Muse, Petersen’s Field Guide to Lovecraftian Horrors.

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PDF Product Name: [RuneQuest: Roleplaying in Glorantha - PDF]
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Physical Product Name: [S.Petersen's Field Guide to Lovecraftian Horrors]
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Page Count:
Color PDF
Sandy Petersen, Mike Mason
Loic Muzy, Mariusz Gandzel, Claire Delepee