[Precis Intermedia] MasterBook Core PDF

By on 1 June 2017
[Precis Intermedia] MasterBook Core PDF Precis Intermedia

Updated: Now includes download of Second Edition public playtest.

Precis Intermedia brings this classic universal roleplaying system (originally published by West End Games) back in PDF format.


The Only Rulebook You’ll Ever Need

With the MasterBook rules system, you can adventure in any game universe imaginable. Flexible and easy to learn, the MasterBook rules can be adapted to everything from science fiction to high fantasy, from pulp adventure to dark horror. The only limit to where MasterBook can take you is your imagination!

In this book, you’ll find details on creating characters, choosing skills, running combat, magic, miracles and more — everything you need to start adventuring today.

MasterBook is a master game system designed for use with published WorldBooks or settings you create yourself. You need two 10-sided dice to utilize this system. MasterDeck™ card deck is optional, but recommended.


  1. This scanned reprint of the classic 1994 game also includes remastered MasterDeck™ action cards in PDF format (in both black & white and color, for both single and double-sided printing) — a $4.95 value for FREE.
  2. The public playtest version of MasterBook Second Edition (May 2017) is also included with this item.

Now you can create your own supplemental material for MasterBook royalty-free. Click here to download the Open Supplement License.

“The emphasis here is on drama. Every rule moves the Gamemaster and Players toward making more heroic actions… MasterBook’s game system is so slick… You have to play this system to believe it.”
— John J. Wick

About Dave McAlister

Dave has been roleplaying for over 30 years, having played and/or run most mainstream systems with the espionage genre being an early favourite. So much so that, in 1999, he started Modus Operandi. That same year he joined the Sarbreenar "Living" campaign team as their plotline controller before moving across to the Living Spycraft campaign team (as UK Regional Branch Director) in 2003. 2003 also saw the birth of UK Role Players as well as Dave's first freelance writing appointment (co-writing World Militaries and consulting on both US Militaries and Battlegrounds, all for Spycraft). Since then, Dave has concentrated on supporting the UK gaming scene. He has organised and run several small, one-day, events and was the RPG Area Manager for Gen Con UK in 2004. His current favourite systems are Dungeons & Dragons (specifically 5th Edition), Savage Worlds and Cinematic Unisystem. He has a (currently neglected) blog at dave.mcalister.org.uk and runs a D&D 5e SRD website at DnD5e.info.

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