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 Hottest All-in-One Rulebooks, Hard Sci-Fi, PDF
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Hotshots

Hotshots


Do you have what it takes to be a hotshot, to feel the g-forces crash against your body without passing out, to keep your cool as bolts of plasma tear through your engines, to face death with every flight and laugh in its face? There's only one way to find out! System Hotshots is a lightweight system for creating pilots in fragile starfighters going on daring space adventures. Be...   [click here for more]
Mitchell Daily Games  Pay What You Want

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Cepheus Engine System Reference Document

Cepheus Engine System Reference Document


The Cepheus Engine System Reference Document comprises the core rules for a Classic Era Science Fiction 2D6-Based Open Gaming System. Inspired by the original three books of the oldest 2D6-based science fiction roleplaying game, the Cepheus Engine system incorporates elements of Open Game Content from previous releases of that game of intergalactic...   [click here for more]
Samardan Press  Pay What You Want

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Cepheus Engine Vehicle Design System

Cepheus Engine Vehicle Design System


The Cepheus Engine Vehicle Design System provides comprehensive rules for developing non-space vehicles for the Cepheus Engine or any Classic Era Science Fiction 2D6-Based Open Gaming System. Inspired by the starship design system found in the Cepheus Engine SRD, this vehicle design system provides everything...   [click here for more]
Samardan Press  Pay What You Want

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Sufficiently Advanced, Second Edition

Sufficiently Advanced, Second Edition


Sufficiently Advanced is a transhuman roleplaying game of the far future.  Humanity has been reconstructed by time and technology. Wield incredible technological enhancements and thousands of years of expertise, or the ability to mold the story of the game. Play a digital intelligence with remote-controlled robot drones, a diplomatic team that shares a group-mind, a soldier...   [click here for more]
Valent Games  Pay What You Want

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Wired Neon Cities - Minimalist Cyberpunk Roleplaying

Wired Neon Cities - Minimalist Cyberpunk Roleplaying


Welcome to Glow City, where the corporations will beat you down as much as the gangs. Cyberninjas patrol the neon streets with katanas, the Iron Maidens roam the roads with chains and chop shops are filled with the poor and bored who want to alter their bodies beyond their wildest dreams. Hulking sentries guard the gleaming skyscrapers of the elite and psycho juicers drop adrenaline before holding...   [click here for more]
Trollish Delver Games  Pay What You Want

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Space Knights

Space Knights


Space Knights is a science fiction roleplaying game about alien invasions, mighty warriors and desperate battles in the dark future. The player characters in Space Knights are no individuals but the companies of an Order of Elite Warriors in a time when humankind has spread through the galaxy and fights for survival. Space Knights uses a PbtA-based system and contains everything you need to play. ...   [click here for more]
Gabriel Ciprés  Pay What You Want

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Plasma Torch: A One-Page RPG of Derelict Spaceships

Plasma Torch: A One-Page RPG of Derelict Spaceships


In PLASMA TORCH, you serve on a deep-space salvage crew, slicing open  derelict space cruisers and delving into their claustrophobic confines in exchange for a meager percentage of the profits. All you’ve got to light your way through the dark ruins of these massive vessels is your trusty plasma torch — and each other. PLASMA TORCH is a one-page RPG featuring simple and fun mechanics for avoiding...   [click here for more]
Absolute Tabletop  Pay What You Want

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Journeyman: Anniversary Edition

Journeyman: Anniversary Edition


First published in 1989, Journeyman offered a new and exciting face to the world of pen and paper RPGs. Enjoyed by gaming enthusiasts from as far away as the radio rooms of Coast Guard ships, Journeyman fulfilled the promise offered, but never delivered, by other SFRPGs of the time. The anniversary edition revisits that era with enthusiasm. The rules have been re-typeset from the original electronic...   [click here for more]
Higher Dimension Games  Pay What You Want

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Trinity d20

Trinity d20


Epic Science Fiction In the 22nd century, humanity has ventured to the stars. Yet alien races, fractious colonies, contending governments and aberrant mutations all vie for supremacy amid the wonders of this new age. At the center of the conflict stands a new breed of humans — men and women with psychic powers — whose actions will determine humanity’s ultimate fate....   [click here for more]
Onyx Path Publishing  Pay What You Want

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Hipersono

Hipersono


Hipersono You woke up from the hypersleep and are alone in the spaceship. Your three colleagues are still sleeping and you don't remember who you are. Something is happening and your time is running out. Hipersono is a solo RPG of investigation and drama that uses a regular deck of cards.  ...   [click here for more]
Green Little Thing  Pay What You Want

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Posthuman Pathways

Posthuman Pathways


Posthuman Pathways is a transhumanist roleplaying game that focuses on the changing world and the sacrifices we make in the name of progress. It’s about the transformation of our society over a single lifetime, and what it means to be human. Technology is changing us. We are transforming into beings both less and more than human. We abandon the frailties of human flesh and our simple creature comforts....   [click here for more]
Genesis of Legend Publishing  Pay What You Want

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Modulus

Modulus


     Modulus is a human-oriented, gritty, setting-agnostic role-playing system! Math is kept to a minimum, and the rules absolutely needed for play fit on the back cover. The book contains a generic role-playing system with Game Master commentaries on all rule sections to provide insight into how to run the game, as well as why certain rules were included. The generic system includes two variants...   [click here for more]
Denver Cheney  Pay What You Want

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MADCAP Gimmick Cards

MADCAP Gimmick Cards


These cards are for use with MADCAP: SCREWBALL CARTOON ROLE-PLAY Each card includes: A Gimmick, an upside and a downside for your character. Some of them are General gimmicks (for use in any game), while others are specific to a genre (Medieval, Wild West, Sci-Fi, Teen Mystery, Horror, Cyberpunk). Pass these out to the players to let them...   [click here for more]
Sanguine Productions  Pay What You Want

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Primus Star Core Rulebook 1st Edition

Primus Star Core Rulebook 1st Edition


The Core Rulebook is the essential guide to run Primus Star. It contains the rules for character creation and advancement as a player as well as running the game and creating encounters as a Game Master. Use this book to run the game and to craft new characters and worlds to explore. Primus Star immerses you in a sci-fi world of your design. Explore derelict space stations and hostile compounds....   [click here for more]
Evil Pig Productions  Pay What You Want

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A-LIEN

A-LIEN


Gdr Fantascienza ULTRACOMPATTO dove il narratore può compensare con la sua fantasia ricreando una fantastica saga cinematografica. E giochi in 5 minuti, senza doverti studiare le pagine bianche di Milano Se il gioco ti è piaciuto accetto volentieri un caffè ...   [click here for more]
Qwein  Pay What You Want

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Journeyman

Journeyman


Flaming blasters, exotic aliens, strange worlds, speeding ships, political intrigue, corporate wars, mad scientists, noble (and not so noble) engineers, high tech societies, intelligent robots, cybernetic organisms...all this and more belongs to the universe of Journeyman. Be a part of the action and experience the greatest adventure of all time. Before there was Stellar Wind, there was Journeyman. In...   [click here for more]
Higher Dimension Games  Pay What You Want

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Medical Bay Three

Medical Bay Three


Four years of pre-med, four years of medical school, one year of residency, years of professional experience back on Earth and all the memory downloads about extraterrestrial culture have all taught you this: you don’t know anything about what you’re doing. Not here, anyway. On the Sphere, everything is weird and different. The Sphere is one of the wonders of the galaxy, an enormous construct...   [click here for more]
Teapot Dome Games  Pay What You Want

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xpandables

xpandables


XPANDABLES is an RPG about violence and tough choices and about the peaceful lives of those around you who are not fighting. It's a game about the sound of battles and the silence among the stars. It's a game about blood, stress and trauma, and how these affect the lives of the characters when they're back home. And it's a game fighting with remote controlled cyborgs, about apocalypse and technology,...   [click here for more]
DaimonGames  Pay What You Want

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1TR Core Rules

1TR Core Rules


Welcome to the early beta of 1TR system. It has been tested since 2015 and there are still glitches and imbalances in the gameplay mechanics, but you can try it yourself already! This system was designed for two sci-fi campaigns that will be published in pay what you want fashion in episodes later in 2016. Both of them can be played using your favourite universal rules, but we strongly adivise you...   [click here for more]
Cat at Home Studio  Pay What You Want

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Carbyne Jungle Player's Rules Cheatsheet

Carbyne Jungle Player's Rules Cheatsheet


Step into the Carbyne Jungle! Carbyne Jungle is the new Tabletop RPG created by Nor Cal Mythos Entertainment. This one page cheatsheet is the perfect reference to keep the most important rules at your fingertips ...   [click here for more]
Nor Cal Mythos Entertainment  Pay What You Want

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Krisensitzung - EINS: Das HUETEOTL-Projekt

Krisensitzung - EINS: Das HUETEOTL-Projekt


Der Präsident der Vereinigten Staaten von Amerika besucht eine Forschungsstation im Pazifik. Dort soll ein gefährliches Experiment stattfinden, dass die Energieprobleme der USA für immer lösen könnte. Doch nicht alles ist so, wie es scheint. Und während die politische Konkurrenz an seinem Stuhl sägt, potentielle Nachfolger sich in Stellung bringen, Wissenschaftler über Versuchsparameter...   [click here for more]
Pyromancer Publishing  Pay What You Want

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Carbyne Jungle GM's Rules Cheatsheet

Carbyne Jungle GM's Rules Cheatsheet


Step into the Carbyne Jungle! Carbyne Jungle is the new Tabletop RPG created by Nor Cal Mythos Entertainment. This two page cheatsheet is the perfect reference to keep the most important rules at your fingertips! Stocked with important tables, this will help you build awesome adventures and keep the game flowing. Also, check out the player's rules cheatsheet. ...   [click here for more]
Nor Cal Mythos Entertainment  Pay What You Want

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Traitor <beta>

Traitor <beta>


Using Conflict System Rev D, Traitor allows the Players to do more at that table. The Conflict System Rev D uses a 1d100 base system to allow players to use any Skill, passion, luck, technology, or Past conflict to create a SkillSet to overcome the GM set challenges. Rev D allows the players to pick the level of detail they want to use to resolve the effects of their SkillSets at the table. The...   [click here for more]
RolePlayersINK  Pay What You Want

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Crisis Meeting - ONE: The HUETEOTL project

Crisis Meeting - ONE: The HUETEOTL project


The President of the United States of America visits a research base in the Pacific. There, a dangerous experiment will take place that might solve the energy problems of the USA forever. But not everything is at it seems. And while his political rivals undermine his position, possible successors bring themselves into positions, scientists argue about test parameters, extremists plan attacks...   [click here for more]
Pyromancer Publishing  Pay What You Want

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Arkadia Grzech pierworodny

Arkadia Grzech pierworodny


A simple role playing game being mix of fantasy and science fiction in the style of Heavy Metal comic magazines. Designed for sandbox gaming. "A spaceship crashes on the abandoned planet, somewhere on the outskirts of the Galaxy in the midst of the civil war..." Intended for mature readers ...   [click here for more]
Nimsarn  Pay What You Want

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Carbyne Jungle Character Sheet

Carbyne Jungle Character Sheet


Step into the Carbyne Jungle! Carbyne Jungle is the new Tabletop RPG created by Nor Cal Mythos Entertainment. This 4 page editable PDF character sheet has room for everything you need to make an amazing character! Set thousands of years into a distant future, Carbyne Jungle combines elements of Fantasy, Sci-Fi, Noir, and Horror, into a rich gaming experience. Built on the Tri-Forge Engine, Carbyne...   [click here for more]
Nor Cal Mythos Entertainment  Pay What You Want

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