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Cavaliers of Mars Core Rulebook
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Cavaliers of Mars Core Rulebook

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Return now to dying Mars in its last age of glory. A world of flashing swords and choking sands, of winking courtesans and lantern-lit canal cities. Mars, where romance and heartbreak are two sides of the same obsidian chit.

Where lost cities are buried in the dunes, and dry oceans stretch out between the last daring bastions of civilization. Where the First Martians, the monument-builders, are but a faded memory. And the Red Martians have become decadent and capricious in their last days. 

Find yourself digging for someone else’s treasure in the lost tombs of Chiaro, or spitting defiance at the Roundhead priests of wild Ziggur, or dashing across the towered crypts of Vance with your long-lost lover. Lock steel with the Princess Invincible, even as your hand reaches towards your flintlaser for insurance.

Cavaliers of Mars includes:

  • A vibrant setting with cultures, careers, characters, and dozens of locations, all organized to get you right into the world of Mars!
  • An all-new system combining your character’s motivations, history, and beliefs with strategic swashbuckling action!
  • Astrology, crafting, psychic powers, and much more!

Created by Rose Bailey

Written by Rose Bailey, Benjamin Baugh, Storn Cook, Steffie de Vaan, Meghan Fitzgerald, Jordan Goldfarb, Danielle Lauzon, Ethan Skemp, Lauren Stone, Travis Stout, and senior writer Audrey Whitman

Note that while Cavaliers of Mars is a black & white book, we are two Hardcover versions. The usual black & white edition, plus a version using the Standard Color Heavyweight process to offer a book on a heavier paper stock for more vibrant printing.


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Discussions (2)
Customer avatar
Eldritch S October 19, 2018 8:19 am UTC
What's the engine/system powering the setting?
Customer avatar
Ilias T October 19, 2018 10:54 am UTC
Customer avatar
Rose B October 19, 2018 12:44 pm UTC
DEIMOS is a new set of rules for the setting. I'd call it medium complexity, on the same level as Cortex Plus or Cinematic Unisystem.

For most situations, you have traits rated in stepped dice: motivations like For Self and For Love, methods like With Grace and With Force, and careers like Priest and Cavalier. You roll them as a pool, then add the highest two together.

For combat, you use a "hand" of 10-sided dice in different colors for strikes, parries, and stunts. Everyone rolls their dice, and then the GM counts down from 10. When the number hits one of your dice, you get to act.

Crafting under pressure is similar to combat, with different dice representing different actions.

There are also systems for psychic powers and astrology.

I hope that helps!
Customer avatar
Eldritch S October 19, 2018 6:15 pm UTC
Thank you!
Customer avatar
Charles S October 19, 2018 6:45 am UTC
The Exhausted Condition on the character sheet is missing its "T".

Thanks for the very cool game!
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Silver seller
File Size:
28.44 MB
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File Last Updated:
September 19, 2018
This title was added to our catalog on October 17, 2018.