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Guide RPG - Playtest Edition

Suggested Price $9.99

Guide RPG - Playtest Edition

Note that this is a first-draft playtest edition. The price is set to PWYW, and any money raised will go towards developing the game and buying in art.

Cthulhu Investigations and Adventure

Built for the Cthulhu Mythos Game Master who wants that Rolemaster feel but doesn't want to have to hack systems together themselves.

This game takes Whitebox Eldritch Tales and does a Rolemaster-style conversion. You get all the game setting from Eldritch Tales, but with the d100 open-ended skills system of Rolemaster, the criticals, and characters can do anything if you are prepared to spend the development points to buy the skills.

This is the third game in the series. Navigator RPG was my attempt to make a Spacemaster retro-clone based on White Star, Pilot RPG was my fantasy conversion, based on Whitebox Fantasy Adventure Game, and this Cthulhu game is derived from Eldritch Tales. The underlying games are solid workhorses, and all three titles in the series are cross-compatible.

Character Creation

Characters follow a life path model. You choose your culture, a profession, and then spend a pool of points on skills to customize your character to the way you want them to be.

For the world-building GM, the rules for creating your own cultures and professions are included, you can deep dive into as much simulationist play as you want. You can pull weapon tables from any other games in the series if you want and mix and match different magical traditions.

The game, as written, uses broad descriptions to keep the number of options facing a new player small. There are only a few professions, cultures, and so on. This gives you are fairly rules-light (Rules medium?) game you can just pick up and play.

It also gives you the potential to refine and add to the game as much detail as you could possibly want.

Game Mastery

The origins of this game are a blend of an OSR 'original game' and a 1980s classic 'Rolemaster' by Iron Crown Enterprises. Everything is new. Where those games were criticized for excessive rules and charts, this version is fully 21st century; it has stripped out as many tables as you can while still keeping those iconic critical tables and wound descriptive text.


This game uses many of the ideas from White Box Eldritch Tales from Raven God Games. But has been entirely rewritten. What that means is that everything you need is here to play a classic Cthulhu mystery is right here.

The images below will give you an idea of the games look and feel.




Free as in Speech and Free as in Beer

This game is covered by the OGL Open Game License. This means that you are welcome to create anything you like for the Guide RPG universe, create it, publish it, and sell it.

All the sections are numbered so house rules for each section can be easily slotted into your version of the game, and numbered sections can be swapped, shared, or sold as companion material.

The game is also a Pay What You Want title for its PDF. You can download it and play it without paying a cent. 

There will also be high-quality softcover and hardback books if you want the books at your table.

This is Not a Beginner's Game 

You will not find a "What is an RPG?" or "How to Role Play" chapter in this book. It is assumed you know how to role-play and what an RPG is. This is not an ideal game for people new to the hobby.

Solo is a perfect way to learn a new game, test your first adventures and going beyond just making characters when you are first getting to know the rules.

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Discussions (1)
Customer avatar
Shawn S January 09, 2024 7:11 pm UTC
The email and the notice at the top of this page said it's PWYW but apparently it is not. Please let me know when this is fixed. I'd like to look it over - if it's useful I'll gladly give you some money for your hard work. Thanks!
Customer avatar
Peter R January 09, 2024 8:14 pm UTC
Whoops, slip of the mouse. This is fixed.
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 Recent History

Product Information
Publisher Stock #
File Size:
62.14 MB
Original electronic Click for more information
Scanned image
These products were created by scanning an original printed edition. Most older books are in scanned image format because original digital layout files never existed or were no longer available from the publisher.

For PDF download editions, each page has been run through Optical Character Recognition (OCR) software to attempt to decipher the printed text. The result of this OCR process is placed invisibly behind the picture of each scanned page, to allow for text searching. However, any text in a given book set on a graphical background or in handwritten fonts would most likely not be picked up by the OCR software, and is therefore not searchable. Also, a few larger books may be resampled to fit into the system, and may not have this searchable text background.

For printed books, we have performed high-resolution scans of an original hardcopy of the book. We essentially digitally re-master the book. Unfortunately, the resulting quality of these books is not as high. It's the problem of making a copy of a copy. The text is fine for reading, but illustration work starts to run dark, pixellating and/or losing shades of grey. Moiré patterns may develop in photos. We mark clearly which print titles come from scanned image books so that you can make an informed purchase decision about the quality of what you will receive.
Original electronic format
These ebooks were created from the original electronic layout files, and therefore are fully text searchable. Also, their file size tends to be smaller than scanned image books. Most newer books are in the original electronic format. Both download and print editions of such books should be high quality.
File Last Updated:
January 10, 2024
This title was added to our catalog on January 09, 2024.