Sandy Petersen's Cthulhu Mythos for Pathfinder

Created by Sandy Petersen

Sandy Petersen's Cthulhu Mythos for Pathfinder
Photo original
2,328 backers pledged $203,503.00 on Kickstarter

The definitive guide by Sandy Petersen. New rules and over 100 monsters for the Cthulhu Mythos plus tons of 28mm scale miniatures.

Raised in Kickstarter
$203,503.00 / 2,328 backers
Raised in BackerKit
$73,414.49 / 2,394 backers

Learn About Our Project:

Sandy Petersen is the undisputed authority on the Cthulhu Mythos in games as the author of the groundbreaking game Call of Cthulhu, the first game ever to bring HP Lovecraft’s work to the gaming world.

He now proudly presents Sandy Petersen's Cthulhu Mythos for Pathfinder, by Petersen Games. This is the definitive and ultimate guide to bringing Lovecraft to the high fantasy sword and sorcery worlds played using the Pathfinder rule system. 

Your band of heroes can now fight (and maybe even defeat) monstrous horrors and bizarre, inhumanly advanced races in adventures featuring these unique entities, their magics, and the alien technologies accurately portrayed from Lovecraftian works!

We're offering a lot with this Kickstarter. Some of you have asked how to add copies of the book or more sets of miniatures to your pledge. It's easy - just add the price of the item you want to add to your pledge after clicking the Manage button in the upper right corner of this page.

Or just use this convenient copy we made!

For easy reference, here's a list of Add-On prices:

  • Add $35 per print copy of the book
  • Add $70 per Dwellers of the Dreamlands Campaign Collection
  • Add $70 per Former Human Horrors Campaign Collection
  • Add $70 per Cosmic Nightmares Campaign Collection
  • Add $70 per Shadows Out of Time Campaign Collection
  • Add $35 per Primal Horrors Adventure Kit
  • Add $35 per Foulness From the Stars Adventure Kit
  • Add $35 per Shadows Out of Space Adventure Kit
  • Add $35 per Dwellers of the Abyss Adventure Kit
  • Add $15 per Cultist Horde Pack
  • Add $15 per Deep One Horde Pack
  • Add $15 per Mythos Ghast Horde Pack
  • Add $15 per Moonbeast Horde Pack
  • Add $15 per Mutant Horde Pack
  • Add $15 per Tcho-Tcho Horde Pack
  • Add $15 per Mythos Ghoul Horde Pack
  • Add $35 per Designer's Collectors Kit
  • Add $30 per Hero Lab license
  • Add $15 per Glow in the Dark Elder Thing
  • Add $25 per Monster Deck

For example: If you have selected the HERO PLEDGE option and want two extra Horde Packs, just raise your pledge from $200 to $230.


  • A bestiary with over 100 entries, almost half never before seen in a Pathfinder book before.  
  • Over 25 Mythos Entities: Creatures in the Pathfinder Bestiaries I-V now authoritatively revised & updated in this book. Additionally, the original entries as found in the Bestiaries I-V are also included for easy reference and comparison. 
  • Over 50 NEW Mythos Entries: Creatures from the Cthulhu Mythos that have never before been published in any Pathfinder Bestiary.
  • Over 40 'Unusual Suspects': Creatures that could (and maybe should) be in the Cthulhu Mythos, found in the pages of the current Pathfinder Bestiaries. Some have been updated to reflect our new rules. 
  • Adventures: Plot Hooks and Campaign starters by Sandy Petersen and others. 
  • How to run horror in a heroic sword and sorcery setting by Sandy Petersen.
  • Mythos Alien and Bizarre Technology (Stretch Goal; Funded!)
  • New Expansive Insanity Rules (Stretch Goal; Funded!)
  • The Necronomicon and other Tomes (Stretch Goal; Funded!)
  • New Rituals and Spells (Stretch Goal; Funded!)
  • Archetypes and Class Options for Base Classes (Stretch Goal; Funded!)
  • Cults of Cthulhu and Other Great Old Ones (Stretch Goal; Funded!)
  • Mythos Magic Items and Artifacts (Stretch Goal; Funded!)
  • Aklo Language Essay (Stretch Goal; Funded!)
  • Mythos Ghouls as Player Characters (Stretch Goal; Funded!)
  • Mythos Eidolons, Familiars and Animal Companions (Stretch Goal; Funded!)
  • Tcho-Tchos! (Stretch Goal; Funded!)
  • Gnorri as Player Characters (Stretch Goal; Funded!)
  • Advanced Adversaries (Stretch Goal; Funded!)
  • Zoogs as Player Characters (Stretch Goal; Funded!)
  • Mythos Cats and Mythos Cats as Player Characters (Stretch Goal; Funded!)
  • Campaign Launch Adventure (Separate PDF) (Stretch Goal; Funded!)
  • Hero Lab Data Files! (Stretch Goal; Funded!)
Example layout - Not Final.
Example layout - Not Final.

The Pathfinder Roleplaying Game is an evolution of the 3.5 rules set of the world's oldest fantasy roleplaying game, designed using the feedback of tens of thousands of gamers. Since Paizo released the first playtest documents in March of 2008, more than 50,000 gamers have downloaded the rules and posted their feedback, resulting in a year-long open playtest that was the largest in the history of tabletop roleplaying games. Going back to the beginning of the game's third edition, the rules engine that powers the Pathfinder Roleplaying Game have enjoyed more than 15 years of active playtesting and revision. 

Some Cthulhu Mythos has already been introduced in Pathfinder, but we plan to bring an authoritative expertise of Lovecraftian Horror to the game. Our goal is that this book will be the ultimate guide to the Cthulhu Mythos for the Pathfinder Role-Playing Game

Sandy Petersen brought Cthulhu to role-playing games with his groundbreaking game Call of Cthulhu and now wants to bring the Mythos to the high fantasy world of Pathfinder. 

We also believe that no game of Pathfinder is complete without great miniatures, and we have plenty to include in this campaign. These miniatures come fully assembled and ready to be played immediately.

The miniatures are all in scale with Sir Pointsalot and with each other. (Yes the miniatures are really that big.)

The miniatures are all in scale with Sir Pointalot and with each other. (Yes the miniatures are really that big.)

The miniatures are all in scale with Sir Pointalot and with each other. (Yes the miniatures are really that big.)

Designer Pledge

We want to offer a few select backers the unique opportunity to put their mark in the Cthulhu Mythos. You will work directly with Sandy Petersen and his design team to create a creature based on a miniature. 

That creature will be published in Sandy Petersen's Cthulhu Mythos for Pathfinder! As a backer at this pledge, you will have selected a one-of-a-kind Designer Pledge Level. As a member of the design team, your design will forever live on in Pathfinder history!

Meet the Designers

Sandy Petersen's name is synonymous with Cthulhu in gaming. He is a well-known game designer and horror personality. In 1981, he designed the cult game Call of Cthulhu, the very first game to incorporate the Cthulhu Mythos. It has been translated into many languages and is still played worldwide. 

Sandy developed dozens of roleplaying games, campaigns, and supplements. In 1988, he moved on to video games and was a designer on Civilization, Doom, Quake, and the Age of Empires series, among many other games. He inserted tributes to Lovecraft (sometimes hidden) in every game. In 2011, he was Executive Producer on the critically acclaimed movie The Whisperer in Darkness, based closely on the story by H. P. Lovecraft. 

In 2015, he released the famous tabletop boardgame Cthulhu Wars, about the conquest of the earth by the Great Old Ones, and now runs his own small game company. His games have sold tens of millions of copies worldwide, and he has received dozens of awards from the game industry. He is regularly a guest at gaming and horror conventions around the world.

Arthur Petersen has lived and breathed the Cthulhu Mythos with his father for most of his life. Arthur has worked for Petersen Games as the Production Manager for a little over 2 years. His first game as a developer was Cthulhu Wars and its expansions where he helped to test, balance and develop the game. He has been an avid role-player, steeped in the Cthulhu Mythos for over 15 years. 

Ian Starcher has worked in every facet of the game industry on and off for the last 30 years, starting with his stint at Chaosium Inc. Ian is an expert on the Pathfinder system and is Petersen Game's newest team member.

Special thanks to miniatures painters

  • Avalon Starcher 
  • Ben Brownlie 
  • Chris Ewick 
  • Ian Phillips of Iron Tusk Miniatures
  • Kevin Fox 
  • Paul Sanderson 
  • Roy Duffy 
  • Stone Cold Lead 
  • Tim Prow
  • Chase Norton

Photos of painted miniatures by Sheri Starcher.

Cool looking dice provided by Zucati Dice: Minimalist Metal Dice (pre-orders still available on Kickstarter).

Kickstarter Consultant: Gamerati

Graphic Design Help from: Immortal Nights and Shadestream148

Latest Updates from Our Project:

Master of Insanity joins team + The Gods War
12 months ago – Tue, Aug 16, 2016 at 11:39:11 PM


For those of you made to GenCon (and back) welcome home.  

Thank you to all of you who stopped by. It’s always great to see you and meet you in person.  

As for Petersen Games, we had a blast! It was our best GenCon ever both in terms of sales and connecting with our customers.


Thanks to all of you who sent in your requests to be part of the program. It was a little overwhelming how many of you responded. It was also awesome.  

We had a chance to learn a lot about our Campaign Launch Adventure during GenCon. We’re going to make some changes on what we’ve got as to make it better before sending it out to the beta test teams. At that time we’ll be emailing everyone who offered to participate.


Dr. Bruce Ballon…  

Dr. Bruce Ballon is an Associate Professor of Public Health and Psychiatry for the University of Toronto’s Faculty of Medicine and Adjunct Professor for the University of Ontario Institute of Technology’s Faculty of Health Sciences. Dr. Ballon is also an Academic Educator for the Centre for Faculty Development at the University of Toronto. Dr. Ballon has received numerous national and international awards and peer-reviewed grants for his work. 

Dr. Ballon is also a long time gamer and has written gaming supplements. Most notable Unseen Masters which won an Origins award AND a special award for mental health awareness by the University of Toronto. The only publication receiving these awards simultaneously.  

Dr. Ballon brings a truly unique perspective to the development of the insanity rules for Sandy Petersen's Cthulhu Mythos for Pathfinder. As a doctor in psychiatry and a gamer he understands the need for compassion for those with mental illness in the real world and need for theatrical rules for role-playing in an RPG. We are grateful and very much welcome his input to make Sandy Petersen's Cthulhu Mythos the best publication that it can be.


For those of you unaware, Petersen Games launched the Kickstarter: The Gods War today. It has fantastic, amazing miniatures as gorgeous as our Cthulhu mythos ones. Check it out here.

Here is a poor Cthulhu cultist about to be munched by 3 entities from Glorantha: The Gods War:

The Kraken, Lady of Disease, and The Hellmother
The Kraken, Lady of Disease, and The Hellmother

GenCon and new Art for the book
12 months ago – Sun, Jul 31, 2016 at 12:42:50 AM


If you’re at GenCon this year stop by. We’re in booth #423 with our friends at Chaosium. We’ll have many of the miniatures at the booth, including some of the painted ones shown on the Kickstarter for you to look at. Additionally we’ll have demos of a variety of our games at GenCon (notably Cthulhu Wars and its expansions, and Theomachy, which was recently released to retail).


We feel our painters of miniatures did a great job for the Kickstarter. But they were operating under some pretty tight deadlines. We’re now having them go over these miniatures again to either repaint them or take them to the next level of quality. We want the pictures of the book to be top notch. The good news is that we’ve already have about ½ of them through this process already.


We are blessed to have a real veteran working on the layout, Liz Courts. We’ve already started trying out layout ideas to ensure they’ll look as cool as possible while simultaneously being as user friendly for player and GM alike. So far these ideas look like they’ll work out nicely.


In our last update we told you we’d put up pictures after GenCon. But we couldn’t wait. We’ve selected Kent Hamilton to be a key artist for the book. He’s a veteran artist for Pathfinder pics. Expect to see a lot of his great work in the coming weeks and within the book. Here’s one of his – the Gnorri, which is a Player Character race.

Gnorri out of Water
Gnorri out of Water



Attached here is a picture for a Dark Young by M Petersen (Arthur’s 6 year-old daughter). When she heard Grandpa (Sandy) needed art, she jumped right in and started creating. Watch out Kent! 

NOTE: According to M, This particular Dark Young shoots laser beams from it’s eyes among other amazing powers. Certainly not your ‘average’ Dark Young. 

You didn't know Dark Young had eyes?
You didn't know Dark Young had eyes?


Cthulhu rises from the Sea
Cthulhu rises from the Sea


Some of you may have seen in Wire Magazine or elsewhere the story and picture of a d20 from the time of the Romans. Although not exactly “news” I’ve learned a lot of people never heard about this. I thought it would be fun to share this with ya’ll. Here’s a picture of it and the link about it.


As we mentioned in the last update, the miniature packs are a ‘rare commodity’. To make these packs affordable we’re manufacturing them at the same time we’re manufacturing these miniatures for Cthulhu Wars board game and its expansions. If we did a separate run of these, they’d be VERY expensive.

There will be a very, very select few retailers spotted across the country that will have a limited supply of these miniatures available in their stores. So, if you or your friends want them, act now!

You can raise your pledge to add more miniatures. Your friends can pre-order still, for a limited time. I apologize if I sound like a late night commercial. I just know as a miniatures junky I’d be really, really peeved if I missed out on getting as many of these as possible now while I still can. And yes, we know some of you entrepreneurial capitalists out there will order extras to then sell on eBay. Cool by us. Supply and demand – that’s what it’s all about!

Look for the next update to be shortly after GenCon unless we’re too hyped up at GenCon to wait, then we’ll do an update during GenCon.

May all your d20 rolls be 20s.

And thanks again,  

- Brain Cylinder #67.08.23 (Ian)

Brain Cylinder Report - Campaign Launch Adventure Playtesters
about 1 year ago – Wed, Jul 20, 2016 at 08:59:41 PM

We’ve got lots of fun things to report on in this update. Lots and lots of activities that are moving us forward swiftly.


Prior to the Kickstarter finishing we were testing out various ideas for the Campaign Launch Adventure. We’ve settled on which we’re going with and have been having successful alpha playtesting going on. We’ll be looking for a few volunteer groups to be beta testers in the coming weeks. No special (or any for that matter) knowledge of the Cthulhu Mythos is required.   

If your group is interested in being a beta tester group, email us at Please include all of the following to be considered:

# of players in your group (including the GM).

What city and country the group is in.  

We’ll only be able to work with a limited number of groups, so we can’t guarantee everyone will be selected. Groups who are selected and complete the playtest will have their players listed as play-testers in the adventure. Thanks in advance for participating and joining in on the fun!  


Besides photos of the painted minis as seen on the Kickstarter, we will also have paintings in the book in the ‘Classic Paizo Style.’ We’ve started interviewing artists and giving them ‘test’ assignments already. We should be able to show you the first fruits of these efforts right after GenCon.  


We’ve left up the ability for people who missed the Kickstarter to still be able to participate. But this won’t last much longer. Thanks to you folks that backed this project during the Kickstarter, they get all of the applicable stretch goals (and as you know there are a lot of them). Additionally, many of the miniatures sets may not be available in retail stores. They are also not going to be available again until (or if) we do another print run of that particular miniatures set. So now is the time for them to act if they want to ensure they get everything they might want. Please spread the word.


Ninety-two Percent (92%) of you have entered your information for shipping as well as ordered any additional add-ons on the pledge manager. Thanks for doing that! If you’re in the 8% OR want to add even more goodies, you still can. You should have received an email with a link to the pledge manager. If you didn’t receive the email or have any questions regarding this, please email

On the note of shipping, we really appreciate emails of “thank you” regarding shipping. As some you may not know, Petersen Games is subsidizing the costs of shipping. We can’t cover all of the shipping costs, but we did what we can. That’s why it costs you less (in the US) to ship Sandy Petersen’s Cthulhu Mythos for Pathfinder than when you order a game book directly from Thanks again!

Keep havin’ fun!  

And thanks again,  

  - Brain Cylinder #67.08.23 (Ian)


Here's a selfie of me!
Here's a selfie of me!


The BackerKit survey + exciting news!
about 1 year ago – Tue, Jun 21, 2016 at 12:37:20 AM

It's been a while since we've posted any updates - since funding, in fact - but the content of this update should truly make up for that lag in communication! 

GREAT NEWS! Tell your friends, tell your neighbors, tell your daughters and your sons. The Pledge Manager for Sandy Petersen’s Cthulhu Mythos for Pathfinder is open for business! What this means for you, the backer, is that you can go in and select the details of your pledge, including which packs you want and your peeps that missed the Kickstarter can be late backers. Backerkit will be sending out surveys momentarily, and it should take them anywhere from a few hours to a day to finish sending them all. You will find them in the same email you use for your Kickstarter login. 

BETTER NEWS! The project overall is going very well. Despite hitting every single stretch goal that added content to the book, we are on schedule. 

AWESOME NEWS! In addition to the three mi-gos (Sandy Petersen, Ian Starcher, and Arthur Petersen) leading the design of this project, we’ve added the following folks to the team:

James Jacobs, Creative Director at Paizo is now working directly on the Sandy Petersen’s Cthulhu Mythos for Pathfinder. James is, of course, an expert on Pathfinder as well an aficionado and expert on the Cthulhu Mythos in his own right. 

Liz Courts, Community Manager at Paizo is now also involved with the project on a freelance basis. Liz, a graphic designer (and good artist in her own right), will be doing the layout of the Sandy Petersen’s Cthulhu Mythos for Pathfinder book and Campaign Launch Adventure PDF. Besides being a veteran in laying out Pathfinder Compatible books, she’ll be simultaneously making sure we remain compliant to the Pathfinder Compatible Agreement. This is something that’s critical and a high priority to Petersen Games. 

Jeff Hersh, designer and Hero Labs programming expert is also on board. He has been a designer and contributor for other excellent publishers and has done Hero Labs programming for several companies and have been the programmer on multiple Adventure Paths for Paizo. 

Please let everyone you know who’s either into Cthulhu Mythos and/or is bored with fighting the same, old creatures, about our Kickstarter and the opportunity to be a late backer. Also, on that note, we will NOT be releasing all of the miniatures packs after the pledge manager is closed into retail stores or even on the Petersen Games website. So, in some cases this will be the ONLY chance to get them! We don’t know yet which may or may not be released, so it’s best to not take chances. 

Thank You!
over 1 year ago – Tue, Apr 12, 2016 at 11:39:01 AM

Thanks to you all, this campaign has exceeded our expectations! Your support has actually pushed us through ALL of the stretch goals we had planned, even those who considered to be pipe-dreams at the start. While we could try to invent some more goals, we feel that this would both increase shipping costs and slow the product’s production. Hence, out of respect for you all, and in the interests of getting this product to your doorstep as soon as possible, we have decided not to burden the project with further stretch goals. Thank you again for your great support.