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OSR Cosmic Horror Solo Roleplaying

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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. 

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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 Customers Who Bought this Title also Purchased
Reviews (1)
Discussions (4)
Customer avatar
Glenn P February 17, 2024 10:24 pm UTC
Given the increasing theme in various sources of adapting Love craft for kids -- if that seems improbable, here are some examples:

Cthulhu 4 Kids -

Littlest Lovecraft -

Along Came Cthulhu -

Wee Weird -

Mr. Elder Thing's Big Adventure -

Lovecraft For Kids -

Young Cthulhu -

The Adventures Of Chibi Cthulhu -

C Is For Cthulhu -

Cthulhu Comes: For Children -

The Outsider (Cthulhu Young Readers Level 2) -

Tales From Lovecraft Middle School -

The Children Of Eldrich Lane -

A Picnic At The Mountains Of Madness -

Necronomicon For Children

...ANYWAYS, given this, can this supplement be adapted for a Lovecraft solo game in which the Investigator (i.e., the player-character) is a CHILD? Because the concept very greatly interests me...!
Customer avatar
Peter R February 19, 2024 10:14 am UTC
I went through the book this morning and I can see nothing in it at all that would prevent you from playing a child as the main protagonist.
I would probably suggest taking a few points from STR and having the choice of which attribute to add them to, to better reflect the youth of the character, but the solo rules should work just fine.
Customer avatar
Aubertin L February 06, 2023 5:20 am UTC
A terrific resource!
The best and really useful book for solo players I've read!
Customer avatar
charles B October 07, 2021 12:40 am UTC
Customer avatar
Peter R October 07, 2021 9:41 am UTC
Yes, OK. I will put POD for this title on my to do list.
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!
Customer avatar
Joseph D January 15, 2021 2:24 pm UTC
Silent Legions is great. It is made by the same guy who made Stars Without Number. It works closer to first edition Stars Without Number.
Customer avatar
Peter R January 15, 2021 2:34 pm UTC
I have spoken to Kevin Crawford, and bought Silent Regions. At some point in 2021 there could be a Silent Legions themed set of solo tools.
Customer avatar
Aaron F February 20, 2021 3:04 pm UTC
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7.9 MB
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File Last Updated:
August 21, 2020
This title was added to our catalog on August 10, 2020.