Advanced Search

OSR Cosmic Horror Solo Roleplaying
Quick Preview
Full‑size Preview

OSR Cosmic Horror Solo Roleplaying


OSR Cosmic Horror

Solo Roleplaying


Compatible with Eldritch Tales: Lovecraftian White Box Role-Playing(TM)

This is a rules supplement that allows you to play Eldritch Tales without a Game Master. The rules pick out the suggested optional rules from within Eldritch Tales that best suit solo play, and then add in randomised plot hooks, question and answer rules and some unique game mechanics to help bring some of the mystery of the classic Lovercraftian investigation.

These rules are an extention of my best selling OSR solo rules but introduce several key modifications to those rules light solo rules. 

The 'oncoming horror' mechanic introduces a way to moderate how and when the dark forces will come after you, when you know too much or are too dangerous.

I have integrated the insanity system to make it more playable, for a solo character.

More features are demonstrated in the actual play video below. 






Other solo rules you may be interested in:

ICRPG Solo - Index Card RPG solo  Playing The Lore System solo  Solo Roleplaying Dungeon World  Solo Roleplaying 13th Age  Solo Roleplaying Tales from the Loop  Cosmic Horror Solo Roleplaying-Rules for Whitebox Eldritch Tales  Dark Stalker Solo Roleplaying-Rules for DSDS  Solo Laser - Solo Roleplaying in The Bleed  Forbidden Hero - Solo Roleplaying in the Forbidden Lands  Capers Solo  Savage Worlds Solo Play Guide  Lone Star, Solo Roleplay using Mothership-RPG  Maze Rat, Solo Roleplay using Maze Rats  A Lonely Knave, Solo Roleplay using Knave  Solo roleplaying in an anime world  Solo Roleplaying compatible with GURPS and other d6 systems  Solo roleplaying using Castles and Crusades  Shadow of the Demon Lord solo rules  Grim and Perilous solo roleplay  303622-thumb140.png  285433-thumb140.jpg  284798-thumb140.jpg  239218-thumb140.jpg  285163-thumb140.jpg  280650-thumb140.jpg   309335-thumb140.jpg  282609-thumb140.jpg  282773-thumb140.jpg  286375-thumb140.png  309335-thumb140.jpg  282609-thumb140.jpg  282773-thumb140.jpg    282609-thumb140.jpg 

Complete Solo Game Systems

286375-thumb140.png  286375-thumb140.png  286375-thumb140.png


Maze Rat, Solo Roleplay using Maze Rats  A Lonely Knave, Solo Roleplay using Knave  One-Page OSR Adventure  Part One of an adventure series  Solo roleplaying using Castles and Crusades  282609-thumb140.jpg  282773-thumb140.jpg 

 Customers Who Bought this Title also Purchased
Reviews (0)
Discussions (1)
Customer avatar
Aaron F August 21, 2020 4:51 am UTC
To what extent is this product compatible with other OSR Lovecraftian games? I have Silent Legions and while not solo out-of-the-box, it does provide quite a few GM tools useful for the Soloist. I was thinking about combining it with this system.
Customer avatar
Peter R August 21, 2020 9:51 am UTC
I don't know Silent Legions. (Is it good?)
The best answer I can give you is this.
1. Go to the Full Size Preview, or if that gives you a 404 then use this link:
2. That is the entire PDF as the preview. The only difference is that this has a great big SAMPLE watermark.
3. Decide for yourself if this will work for you.
I don't want you to spend money on something that is simply not what you need.

DriveThruRPG does not support Community Copies. I always put the full PDF as the preview. If you cannot afford the $5 price tag, you are welcome to use the preview.

I hope that is an answer for you.
Customer avatar
Aaron F August 22, 2020 6:10 pm UTC
It is good! If Lovecraftian OSR is something you're interested in, I'd strongly suggest checking it out. It has straightforward mechanics and random tables for everything: generating your own mythos, generating eldritch locations (both on earth and in "other dimensions"), creating magical artifacts and weapons, etc. To get the full use out of it, you'd probably have to play a full-on campaign as opposed to a one shot. What it doesn't have is something for "automating" the behavior of the threat the way you propose. I will most likely make use of your system in that capacity. Thanks for your response!
Browse Categories
 Follow Your Favorites!
NotificationsSign in to get custom notifications of new products!

Product Information
Silver seller
File Size:
7.9 MB
Original electronic
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:
August 21, 2020
This title was added to our catalog on August 10, 2020.