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The True OSR – Obsolete Shi**y Rules - ENGClick to magnify

The True OSR – Obsolete Shi**y Rules - ENG


The True O.S.R. – Obsolete Shitty Rules

A one-of-a-kind parodic old-school RPG

How does it work?

The True O.S.R. has a one-shot-focused game design, easy to learn and apply. In one session, Players will have to challenge (and defeat) the evil GM in an epic battle with no holds barred!

All systems compatible

Want to use all our madness for your boring old school favorite game?
No problem: The True OSR contains 46 table with a gazillion of possibilities, all compatible with every games around!

The theme
The True O.S.R. is a parodic RPG that embraces all the typical themes of classic RPGs (horror, cyberpunk, fantasy, etc.) and mixes them into a bizarre and fun narrative. Along the way you will find all the clichés of traditional RPGs with an explicit, raw and direct twist!

The rules

In The True O.S.R. you will find many randomic tables featuring thousands of elements that can be combined to generate new, unexpected and fun combinations seasoned with simple rules but capable of transcending the narrative level!

What to expect

Scary illustrations, a fun, beer and pretzel one shot game; another classic crazy project signed by Tin Hat Games!
Prepare for the worst!


  • Easy and fast game: lets you play immediately and it is perfect for one-shot sessions! Suitable for everyone from noobs to members of the old guard. 
  • Innovative gaming experience: OSR style yet featuring unique metanarrative outcomes such as the final Master VS Players battle. 
  • Irony filled: let’s take RPG for what it is: a game everyone plays with friends in order to spend a fun night.
  • Long-lasting: you can play it a thousand times with a thousand different outcomes! 
  • Compatible:  The True O.S.R. is compatible with classic Old School game systems which can easily replace the basic structure 

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Product Information
File Size:
59.69 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.

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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:
September 27, 2023
This title was added to our catalog on September 27, 2023.