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What's in the book?

RESIDUUM is a passion project seven years in the making. It is a role playing game with Aliens, Mutants, and what's left of humanity, seeking to survive on an Earth ravaged by nuclear war, disease, and the fall of civilization. The core rulebook contains rules for character creation and game mechanics as well as tools for Game Masters to create their own homebrew campaigns. The vision is for this game to be adaptable to the play styles of any group.

  • You are free to play with or without a grid/miniatures. 
  • You can create powerful synergies with vast multi-classing options or stick to one class. 
  • GMs can create settings and adversaries using the idea seeds in the book or creating their own from scratch. 
  • It can have an old-school number crunchy feel, or you can play it more loosly and let the narrative drive the game. 
  • It's YOUR game. Play it how YOU like. 

There are 24 character classes across three races: Humans, Mutants, and Bellati. The character creation and leveling system were designed to allow a player to quickly create a multitide of intricate combinations, making their character completely unique.

The World of Residuum

When I was a boy, my granddad used to tell me the story about how the world was, back before the Bellati came. He was just a boy then, the year of the Great Alien Plague. It wasn’t like in the Science Fiction films, he said, where the aliens come to wipe out the human race. The Bellati arrived on earth as refugees in need of a new home world after their star system was destroyed by a supernova. One of their multigenerational colony ships found earth; it still orbits the planet, out of fuel and beyond repair.

For a short while there was peace, but the Bellati unknowingly carried a viral strain from their home world that our human immune systems couldn’t handle. Very few humans were immune, and three quarters of Earth’s population was wiped out in a matter of months. The rest of the damage we did ourselves. Nuclear silos, weapon storage facilities, and military bases were left completely abandoned, and in the aftermath of the plague, thugs and terrorists worldwide became powerful warlords who, in their desperate grabs for power, managed to use these weapons of mass destruction to exterminate nearly the entire remainder of the human race and decimate most of the world’s major cities. Less than 1% of earth’s population remained, and of those humans who survived the plague, some had been mutated by it, gaining superhuman abilities but in many cases becoming deformed, twisted, and evil.

The thousands of Bellati that had arrived in search of a new home were now stranded on a planet which they’d inadvertently destroyed. Guilt ridden about the havoc they had accidentally wrought, the Bellati shared their technology and many adopted the role of caretakers to humanity in an attempt to rebuild their civilization.

So what is left for us now, those brave few adventurers who still roam this scorched abyss of a world? To survive.


  • Checks are a modified d20 system.
  • Attacks use a dice pool of D6s that is simple and intuitive with limited modifiers. 


 Customers Who Bought this Title also Purchased
Reviews (1)
Discussions (4)
Customer avatar
Patrick B October 29, 2020 6:56 am UTC
A question - why does the game use separate systems for checks and combat? Almost all RPGs I've seen use the same basic system for checks whether they are inside or outside of combat. I'm wondering if using a separate dice mechanic for combat is to allow for something different or special.
Customer avatar
ralph D October 29, 2020 2:35 pm UTC
Good question, Patrick. Originally they were the same (both d20) because I just like rolling d20s :) but after a while we figured out that a single d20 roll couldn't account for all of the "choice" that you have in firing advanced weaponry. So you'll get to roll x number of D6s based on how many shots you choose to take in a round. There are lots of mechanical and tactical iterations that can come from that single decision: how much of scarce ammo to expend, how efficient do I want to make my attack, how is my character built (some characters will benefit more from taking a single "calculated" shot rather than spraying a target with ammo.

Hope this answers your question.
Customer avatar
Keith M October 28, 2020 10:41 pm UTC
I agree with the previous comments. A whole lot of useful preview and how good it looks! A very interesting spin on my favorite genre! I will be purchasing this in a few moments.

Keep up the great work my friend!
Customer avatar
ralph D October 29, 2020 2:31 pm UTC
Thanks, Keith! Join our discord (link on website) and let us know what kinds of campaign styles you've run within the genre!
Customer avatar
Chris T October 28, 2020 5:30 am UTC
Just for giving us a 23 page preview and including some game mechanics within it, you have my deepest gratitude! I imagine I'll be buying this in short order.
Customer avatar
ralph D October 28, 2020 1:35 pm UTC
Thanks Chris! Trying to be as accommodating as possible :)
As a gamer, I know what I'd want to see.
Customer avatar
Suzanne T October 28, 2020 3:32 am UTC
Artwork is amazing! Congratulations on completing your project! We can't wait to play the game!
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Product Information
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65.15 MB
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File Last Updated:
March 22, 2021
This title was added to our catalog on October 27, 2020.
D Clef Games
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