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Monophobia - Rules Light Solo Roleplaying



Rules Light Solo Roleplaying


This book is designed for use with 7th Edition Call of Cthulhu but will work perfectly well with any edition if you are aware of the positive and negative dice rules and the concept of half and one-fifth values. A character's Luck, half luck, and one-fifth of their Luck attribute play a major role here.

I am fully aware that these are not the only solo rules for Call of Cthulhu in the Miskatonic Repository. This book takes a completely different approach to solo play than the Solo Investigators Handbook. That PDF is 95 pages and has tables for just about everything.

The solo rules in this booklet represent a light-touch approach to solo play. There is one table for plot hooks to kick off a solo sandbox campaign. It is a 10 x 10 x 10 table, commonly called a d1000 table, These create a who, what where plot hook to get you going.

Optional tables are provided for answering Keeper questions but when playing you will not need to refer constantly to this booklet. This is a book of techniques to drive your improvisation. If you are having a day when inspiration deserts you, then you can fall back on the tables.

There is also a section on running investigations, using either an open sandbox or a purchased campaign. A slightly different technique is used for purchased campaigns. In the sandbox no one will know, not even you will know what is really going go behind the plots and conspiracies until you discover the truth for yourself. Everything is open until the clues you have discovered point you to the truth.

To use this booklet you will need a copy of the Call of Cthulhu rules, two sets of d100 dice, and a pack of regular playing cards.




DriveThruRPG does not support Community Copies. The entire text of this supplement is viewable in the Full-size preview. If you cannot afford the cover price, please feel free to use the preview with my full blessing.

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Discussions (3)
Customer avatar
Kyle M May 30, 2022 1:59 am UTC
Are the Positive / Negative dice on page 5 referring to Bonus / Penalty dice in CoC? I don't see any definition for these in the document otherwise.
Customer avatar
Peter R May 30, 2022 8:49 am UTC

Yes, positive and negative dice are bonus penalty dice.
Customer avatar
Kevin K November 01, 2020 11:39 pm UTC
Nice Mono rules. Really good for developing and sharpening your Keeper skills. I intentionally didn't flesh out a portion of a game I ran last Thursday and used some of the tips and tricks to develop a compelling narrative of the fly. By Yog it's a worthy purchase.
Customer avatar
Peter R November 02, 2020 11:47 am UTC
Thank you for your kind words. Glad you are enjoying it.
Customer avatar
Will H August 17, 2020 8:24 pm UTC
Why would you use the same title as an excellent FREE collection of scenarios which has been available for a decade:
Customer avatar
Peter R August 17, 2020 9:02 pm UTC
I didn't realize that existed. I did check for the title on DriveThruRPG and it had not been used.
I just had a look and although the titles are similar, they are not the same. They are also very different books, aimed at different target audiences.
There was no intention to hijack the title. I have changed mine just as an act of goodwill.
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File Last Updated:
December 13, 2021
This title was added to our catalog on August 17, 2020.