Advanced Search

Mysterium Weird Fiction RoleplayingClick to magnify

Mysterium Weird Fiction Roleplaying


To the casual observer reality may seem solid and stable, however this is unfortunately not the case. Our universe is just one of an infinite multitude that has emanated from the Abyss and they all overlap and interact with each other. Ravenous predators stalk the worlds and powers from beyond use us as pawns in a game that we can not conceive of.

Mysterium is a weird fiction roleplaying game where ordinary modern day people become exposed to the paranormal and the unknown, either by encountering an intrusion from beyond or being thrust into another world themselves.

The game is about how the player characters handle this confrontation with strange forces and entities and in what way they become changed by this. Are they consumed by fear or seduced by fascination? Do they turn their backs and run, or do they leap into the unknown? And what are the consequences of their choices?

Mysterium is played with one Game Moderator and two or more players and uses a simple and easy to learn d100-based rules system. This book includes a chapter on setting up roleplaying campaigns inspired by weird fiction, and six scenarios: The Door to the Unknown, Lost and Found, Twilight Town, The New Gods, Angel Tears and Hidden Masters.

 Customers Who Bought this Title also Purchased
Reviews (1)
Discussions (0)
June 2nd, 2022
A few days ago I soloed my way through Mysterium Weird Fiction Roleplaying Beta. This d100 system is free/pay what you want. I used Star Dogs Referee’s Handbook as the solo engine (DriveThruRPG). The adventure (included with the game) starts in 1971 [...]
Narrow Results
 Follow Your Favorites!
NotificationsSign in to get custom notifications of new products!

Product Information
Rule System(s)
File Size:
19.34 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:
December 01, 2022
This title was added to our catalog on May 24, 2022.
Publisher Average Rating