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Mythras Imperative

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Mythras Imperative is a 38 page introduction to the Mythras system, designed for both newcomers and old hands. It gives you a pared-down, simplified version of Mythras but still with enough options and depth to be a playable game. The rules cover character creation, skills, the core mechanics of the game, spot rules for different circumstances, combat mechanics, and several creatures from fantasy, real life and science fiction.

Is this a fantasy game?

We’ve made Mythras Imperative generic. Skills cover the ancient, modern and futuristic settings, and the weapons include firearms. So Mythras Imperative gives you the starting point for adventuring in any time period you want. Other supplements, and the core Mythras rules themselves, expand on things like magic, vehicles, psionic powers and so on.

What else can I do with it?

Mythras Imperative can be used by third party publishers to develop their own, Mythras-powered games, in conjunction with the Mythras Gateway License. This simple agreement extends our permission for the Imperative rules to be used wholesale in new systems people want to create. Contact us for more details.

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Reviews (4)
Discussions (4)
Customer avatar
Sándor L March 08, 2021 7:01 pm UTC
The file size just got x6 bigger with the latest update. Could you please re-upload it with a more reasonable size for a ~40 page document?
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Douglas B March 08, 2021 6:27 pm UTC
On the credits/copyright page, the words "Mythras" and "Mythras Imperative" don't display in the line just below the ISBN code:

" is a Registered ® trademark of The Design Mechanism. All rights reserved.This edition of is copyright © 2019."
Customer avatar
Alex G March 08, 2021 2:33 pm UTC
p. 34 of the Third Edition, "Elemental Control." The paragraph ends with "Eclipse’s powers provide examples of this ability."
Customer avatar
Michael D February 12, 2017 4:06 pm UTC
I have both the Lankmar and Hawkmoon supplements from a previous edition of Runequest. Are these new "basic rules" in some way compatible with the older system?
Customer avatar
Lawrence W May 14, 2017 12:57 pm UTC
With some tweaking, yes. Both Lankhmar and Hawkmoon were released using Mongoose's first version of RuneQuest, and Mythras has some similarities to it. There's probably an 80%+ compatibility level.
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File Last Updated:
March 08, 2021
This title was added to our catalog on June 11, 2016.