Free RPG List: scifi

newuniversalrules-litelonglive-actiononlinesupplementpreviewwotc-d20worldgenreopen-licensehorrormodernscififantasytraditionalpostapocalypticsuperheroIndex

44: A Game of Automatic Fear by Matt Snyder
Keywords: genre modern scifi rules-lite
A scifi horror RPG about humans in an alternate 1950s - who discover and resist Section 44, a robotic conspiracy that threatens to replace all of humanity. Play proceeds in 4 rounds where in a round each player frames one scene. Characters may be replaced by robots, in which case they continue to play and work to replace the others. Character creation is limited point-based, with players assigning 6 points among three qualities (Resolve, Contact, and Material), 3 points among Bonds (other people), and 4 points among player-defined Anxieties. Resolution is scene-based, with player and GM rolling a number of d6s for stat + modifiers, and taking the highest result, +1 for every tie for highest. 37 pages (PDF).
Ad Astra: The New Age by Paul DuBois
Keywords: genre postapocalyptic fantasy scifi rules-lite long
A post-apocalypse science fantasy setting, with various alien races mixed with tribal humanity. An expanded version with GM-only information is available in print (not free). Character creation is point-based. ~60 pages basic rules and background (HTML).
Advanced Star Frontiers, 4th edition by JPayne
Keywords: genre scifi supplement
This is an extensive addition to the published "Star Frontiers" game from TSR. It is not really a complete game, but includes substantially rewritten sections. ~50 pages (HTML).
Adventures in Space by Zak Arntson
Keywords: genre scifi rules-lite
A humorous narrative space opera RPG, where players define their PC with a one-word Style, and roll 1d6 to enact plot changes to get both success/failure and a random Word of Science to incorporate into the plot. 7 pages (PDF,HTML).
Agora Playtest by Joshua BishopRoby
Keywords: genre scifi rules-lite
A sci-fi RPG about characters permanently stranded on an uninhabited planet after an interstellar war has wiped out their homeworlds. It uses a dice pool system, taking the lowest die rolled where 1-5 is a success but each "1" loses you that die. Different advantages give you different die types from d4 to d10. 22 pages playtest rules (PDF).
AIF
Keywords: genre scifi rules-lite
A scifi game set 3000 years in the future. Character creation is by random-roll attributes based on species, assigning single skill rank, and selecting occupation(s). 37 pages (PDF or HTML).
Alien RPG by Chris Tavares Dias
Keywords: genre scifi horror long
An extensive supplement for the Fuzion game system, adapting the movie Aliens and its many spin-offs. ~80 pages HTML.
Alternity Fast-Play Rules by Bill Slavicsek and Richard Baker
Keywords: genre scifi rules-lite long
The "Fast-Play" version of the (out-of-print) commercial sci-fi RPG rules. This is available along with many other downloads including adventures and supplements. Players Book 13 pages (PDF). GM's Book 13 pages (PDF). Warships Sourcebook 112 pages (PDF)
Always/Never/Now by Will Hindmarch
Keywords: genre modern scifi rules-lite
A complete, stand-alone RPG adventure with pre-generated characters set in a high-action cyberpunk future. The Player File includes quick-play rules and pregenerated characters; the Scenario File for the GM includes the adventure. The rules and setup are similar to Lady Blackbird - a dice pool system where every even number rolled is a success, gaining dice from the descriptor for the Trait used, as well as Stunt Dice spent. Experience is by Keys fulfilled. 36 pages Player File, 72 pages Scenario File (PDF).
Anarcho Australis by Craig Thomas Judd
Keywords: genre postapocalyptic scifi rules-lite
A post-apocalypse game set in Australia, using a simple d10 skill-based system. ~5 pages ASCII text.
Anarchy by Kenneth Love
Keywords: genre scifi rules-lite
A game set in 3050 where Earth, Venus, and Mars are under tyrranical rule by the Syndicate (including the non-human vampiri and Venusian elves), using a very simple dice pool system similar to Shadowrun. Character creation is random-roll attributes with a random number of bonus points. ~5 pages rules (HTML) plus ~10 pages background.
Appleseed D6 by Mike Lynes
Keywords: genre scifi long
An RPG adaptation of the cyberpunk manga Appleseed by Masamune Shirow, using a variant of West End's "D6 Legen" system. The core mechanics are included with the rules, although it recommends having the rules in addition. ~60 pages rules and background (HTML).
Ardent Offense by David Loren Buehner
Keywords: genre modern scifi rules-lite
Ardent Offense is a minimalist system with some optional mechanics of traditional role-playing. It includes a detailed examination of role-playing philosophies and a brief modern/futuristic setting. 14 pages (PDF, HTML).
Arumo: the Kingdom of Wilted Flowers by Kyle Marquis
Keywords: genre traditional scifi fantasy rules-lite preview wotc-d20
Preview of a fantasy RPG set in a world of organic technology. The current edition uses the WotC "D20" system, with additions specific to the world. ~10 pages HTML rules plus ~18 pages background.
a|state-lite by Malcolm Craig
Keywords: genre scifi fantasy long preview
A dark science fantasy RPG set in a place known only as "The City", the preview version of a print RPG to be published in 2003. It has advanced technology but also is plagued by the remnants of a magical cataclysm known as "The Shift". It uses a percentile skill-based system (roll under stat/skill on 1d100). Character creation is limited point-based (attribute points and skill points), with various origins and occupations offering suggested skills. There are no ads/disads. 62 pages (PDF).
Aurora Quick-Start Guide by Stephen Mulholland
Keywords: genre scifi long preview
A hard science-fiction spacefaring RPG -- the abbreviated version of the published game available on CD-ROM. Action resolution uses the concept of "Failure Dice". You can choose to roll any number of d10's. That number is added to your skill, but any die which is that number or less is a failure which subtracts 2 from your total. Thus, more dice allows better results but is riskier. Character creation is open point-based. 56 pages quick-start guide (PDF), plus several additions including two 28-page alien species guides.
Badlands by Charles R. Capko Jr.
Keywords: genre postapocalyptic scifi rules-lite
A post-apocalypse RPG based on the computer game Wasteland. It uses (1d20 + Attribute + Skill) vs difficulty. Character creation is by random-roll attributes, class choice, and point-bought skills. 45 pages rules (MSWord or Text).
Bibliotech: the Future Past by David Bubar
Keywords: genre scifi rules-lite long
A sci-fi RPG based on the Bible, with politics on another planet based on biblical figures. The system uses percentiles skills with six degrees of success/failure.
Cartoon Action hour Demo by Z-Man Games
Keywords: genre scifi superhero rules-lite preview
An RPG in the genre of 80's style action cartoons. Actions resolution is by stat (rated -4 to +4) plus 1d12 vs difficulty, though super-abilities replace 1d12 with 2d12 or more. These preview rules have basic combat but no character creation rules. 7 page preview rules (PDF) plus 15 page introductory scenario.
Conestoga by Chris Tavares Dias
Keywords: genre scifi
A mecha space opera game universe about battling empires in a distant future, using the Fuzion / Mekton Z rules. ~40 pages (HTML).
Conspiracy X Demo Kit
Keywords: genre modern scifi rules-lite preview
A demo version of the published modern conspiracy RPG by Eden Studios. PC's are agents of Aegis, a secret organization at work within the U.S. government fighting alien and supernatural menaces. It uses a simple system with 5 levels of skill and difficulty. If your stat is greater than the difficulty, success is automatic. If it is equal, you must roll 7 or less on 2d6. If it is one less, you must roll 4 or less. 16 pages (PDF).
Cosmic Synchronicity v3 by Joseph Teller and Kiralee McCauley
Keywords: genre modern scifi universal long
A universal system, which balances PC's by the principle that a more powerful PC (i.e. higher total attributes) will have critical failures happen more often. Actions are resolved by rolling under (stat or skill)*4 on percentile dice. There are personality traits ("Aspects") that determine the points available in different skill groups. It includes a setting book entitled "Earth Unmasked" -- about an alternate 2025 where aliens and supernatural monsters have emerged. 119 pages core rules (PDF or HTML) plus 151 page setting book (PDF)
Criminal Gang Warfare: Delta by Tux 667 and co.
Keywords: genre scifi
A sci-fi RPG. It includes stats for vehicles (including mecha "hardsuits"), NPC's, and character classes but the rules appear incomplete. ~5 pages class rules, plus ~15 pages equipment and background (text-only).
CyberFUDGE by David Jaquith
Keywords: genre postapocalyptic scifi fantasy long
A cyberpunk/fantasy mix, set in a near-future where magic returned to Earth, resulting in a world war. The war was ended by an army of cyber- and magic-enhanced super-soldiers created by the U.S., Australia, and England. It uses a variant of the Fudge system. 51 pages (PDF).
Cychosis by Grant Graves (Mind's Eye Publishing)
Keywords: genre scifi rules-lite
A simple "RPG/dice game", where the PCs are sentient robots (called Cybers) on the world Cyberia. Some robots are turned into rampaging monsters by an errant virus. It uses a special 3d6 roll for contests, where a basic roll is always subtracted from the opponent's point total. Character creation is open point-based. 27 pages (PDF).
Cyno's Roleplay by Chieh Cheng
Keywords: universal genre fantasy modern scifi long
A universal system. Character creation is random-roll attributes and point-bought percentile skills. It includes four genre books: (fantasy, modern, near-future). ~33 pages core rules, plus four ~10-15 page genre books (HTML).
Danger Patrol BETA by John Harper
Keywords: genre scifi rules-lite preview
A playtest document of an action/adventure retro sci-fi game in the vein of the old Flash Gordon and Buck Rogers serials. The player characters are members of the elite Danger Patrol — super-powered crime fighters who protect Rocket City from various threats. Character creation includes picking a Style (Alien, Atomic, Ghost, Intrepid, Mystic, Psychic, Robot, or Two-Fisted) and a Role (Agent, Commando, Daredevil, Detective, Explorer, Flyboy, Warrior, or Professor). Resolution is by a dice pool system using a mix of dice (1d4 to 1d12), where every 4+ is a success and every 1-3 is a danger. 35 pages playtest rules (PDF).
Darker Days by Dudi Rippel
Keywords: genre scifi rules-lite
A cyberpunk game set in 2031, using a simple 2d6-based system (skill+2d6+mods, needing 12 or more to succeed). Character creation is point-based. 25 pages rules (HTML and MSWord) plus ~15 pages background (HTML).
Darklands by Eric Mau
Keywords: genre fantasy horror scifi long
A futuristic fantasy-horror game, set in 2066 in a grim cyberpunk future where PC's are the "Warbreed" -- creatures created by the dark gods (the "Ashura") and left on Earth in ancient times, who now fight for the Earth against their creators. Character creation is breed and class based, with point-bought attributes. The resolution system is not clear. ~45 pages MSWord format.
Darkness by A. Glare
Keywords: genre scifi fantasy long world
A post-magical-apocalypse RPG set in the year 4469 after a great Fall. The world is is replete with feudal kingdoms, magic, demons, elves, dwarves, gnomes, and halfings -- along with advanced technology in underground cities which survive against the poisoned world. The system is roll under attribute + skill on 1d20, with the roll indicating level-of-success. Character creation is open point-based. ~80 pages rules (HTML).
Dark Time by Stephen and Ellen Bradley
Keywords: genre scifi rules-lite world
A dark future RPG setting in the year 3050 in New York, intended for use with the Fudge rules. ~5 pages HTML.
deadEarth by J.T. Smith with Chris Hagness and Michael Helfman
Keywords: genre postapocalyptic scifi long
A post-nuclear-apocalypse survival RPG, the 51-page free version of the 174-page published game from Anarchy inK. Available free after web registration. It uses a d6 dice-pool system with random-roll character creation including 100 mutations (1000 in the published version!). 51 page Players Handbook (PDF), 101 page GM handbook expansion (PDF).
deGenesis by Christian Gunther
Keywords: genre postapocalyptic scifi long preview
A German-language post-apocalyptic RPG, a free download with identical content to the commercially published book. It uses a system based on 2d10 roll-under-skill. 380 pages rules and background (PDF).
Destiniem by xero1@aol.com
Keywords: genre scifi fantasy
A magi-tech game set in a fantasy world with cyberwizards and majinauts. Available for playtestng by email request only (??).
Doom: The Next Chapter by Richard D. Clark
Keywords: genre scifi fantasy long
An RPG set in the world of the computer game "Doom", where futuristic portal research opens a gateway to hell. It uses a simple percentile system (roll under stat on d100). Character creation is by random-roll attributes, and each skill has a starting value by averaging 2 attributes. 136 pages PDF or text.
Dystopia Shareware Edition by Gavin Hadaller
Keywords: genre scifi rules-lite
The shareware version of an electronically published game, about fighting corporate repression in America 2155 A.D. 8 pages rules (PDF).
Earth Delta 1.5
Keywords: genre scifi long supplement
A "Mutant Adventuring" supplement for Fourth Edition D&D that tries to emulate Gamma World while staying compatible and balanced with core D&D4. It introduces new races, classes, powers, equipment, and creatures/NPCs along with a few rules changes such as modified skills. 347 pages rules (PDF).
Eclipse Phase by Rob Boyle and Brian Cross
Keywords: genre scifi long open-license
The creative-commons-licensed version of the commercial sci-fi RPG released in 2009, set in a far future. It uses a percentile skill-based system (roll under skill on 1d100). 402 pages rules and background (PDF format).
Encounter Critical by S. John Ross
Keywords: genre scifi rules-lite
A humorous parody of early RPGs, printed as a mock garage production from 1979. Character creation is random-roll attributes (3d6), then selecting race, optional racial modifier and character class. There are 12 character races: Amazon, Dwarf, Elf, Frankenstein, Hobling (i.e. hobbit), Human, Klengon, Lizard Man, Planetary Ape, Robodroid, Vulkin, and Wooky. The racial modifiers are "Cave Primitive", "Evolved or Advanced", "Mutation", and "Mixed Race or Bionic". Character classes are Warrior, Warlock, Criminal, Pioneer, Doxy (i.e. prostitute), and Psi Witch. There are 19 percentile skills including unusual choices of "Consume Alien Food" and "See the Future". 28 pages PDF.
Entalis by Robert Barrows
Keywords: genre scifi long
A science fiction RPG set on a planet ("Entalis") which is key to an interdimensional gateway. It uses a percentile, skill-based system. Character creation is random-roll attributes and occupation-based skills with point-bought skill advancement. ~80 pages rules and background (HTML).
Epoch by Jonathan Clarke
Keywords: genre scifi long
A space opera RPG closely based on "Star Trek", attempting for less pseudo-science and more cinematic feel. It uses a dice-pool system, taking highest of Nd6 where the number depends on how many traits apply to the task. Character creation consists of picking freeform traits (i.e. "Security Officer" is a sample trait). 71 pages (MSWord format).
Evolution by Hector Rene' Segovia
Keywords: genre scifi rules-lite
A semi-RPG where each player designs a species and plays an example of that species. Each session the players play members of their species interacting, and then between session they can "evolve" their species. 12 pages MSWord format.
Exemplar by Jeffrey S. Schecter
Keywords: genre scifi rules-lite
A science fiction RPG set in a universe where technological Templars fight in the name of the Intergalactic Government and Church (IGAC). Action resolution is rolling under stat on a number of d10s (1d10 to 5d10 or more) where the number of dice depends on difficulty. Character creation is open point-based, and includes plot points. 32 pages rules and background (PDF).
<"http://www.nma-fallout.com/forum/dload.php?action=category&cat_id=63"> Fallout: The Pencil and Paper Role-Playing Game, v2.0 by Jason N. Mical
Keywords: genre postapocalyptic scifi long
A post-nuclear-apocalypse RPG set after a nuclear war in 2077, based on the computer game by Interplay. It uses a simple percentile system with limited point-based character creation. 157 pages core rules (PDF), plus several sourcebooks.
Far Space by David King
Keywords: genre scifi rules-lite
Previews of a futuristic space-opera RPG, set in an alternate universe in a human-populated solar system in the midst of a devastating war that has be raging for over 100 years. There are six major feudal houses who fight for control of the sixteen-planet system. Currently this has a 16-page preview of the combat system, which is based on stat + 1d10 + modifiers rolls. Damage is done to a luck statistic, which controls the the chance of a kill with the next attack. 16 pages combat system preview (PDF).
Far Trek FINAL v2 by C.R. Brandon
Keywords: genre scifi rules-lite long
An RPG set in the Star Trek universe, using an original system (the "Three D" system). Character creation is random-roll attributes, class (Gold Shirt, Blue Shirt, or Red Shirt), and point-bought skills, and selected talents (general or class-based). Resolution is 3d6 + attribute + skill vs difficulty number. 90 pages rules and background (PDF).
The Fifth Element RPG
Keywords: genre scifi rules-lite world
An adaptation of the science fiction film using the free RPG system Cyno's Role-Play. It is set in the 23rd century, in the year 2259 A.D. This includes races, professions, equipment, vehicles, and characters -- but not the basic rules. ~20 pages background (HTML).
Final Frontier Fleet
Keywords: genre scifi online
An freeform online play-by-email RPG, set in the Star Trek universe.
Firefly RPG by Joe Coleman
Keywords: genre scifi rules-lite
An RPG adaptation of Fox's space-opera television series. It includes notes on the locations, planets, moons, vehicles, weapons, and technology used on the show. It includes notes on the "Mayonnaise" system which is an adaptation of the free Fuzion system, but not a complete system by itself. 24 pages rules and background (PDF).
The Five-Star Stories Role-playing Game by Ed Gomez
Keywords: genre scifi rules-lite
An RPG based on the manga of the same name by Mamoru Nagano. Character creation uses random-roll attributes, a selected template, and point-bought skills. Action resolution uses 1d20 plus stat or skill. The rules include a psionics system and detailed equipment. ~50 pages rules and background(HTML).
Force 9 by Shootingiron
Keywords: scifi rules-lite
A space-faring sci-fi RPG about "bug-hunting" in the style of Aliens and Starship Troopers, using the Fudge system. 19 pages (PDF).
Forgotten Futures by Marcus L. Rowland
Keywords: genre scifi fantasy long world
Not technically free, but a great shareware RPG based on turn-of-the-century science fiction (Rudyard Kipling, Arthur Conan Doyle, et al.). ~500+ pages rules and background in six collections (HTML).
Fresco by Salkaner il Nero
Keywords: universal scifi horror rules-lite
A minimalist universal system in both English and Italian. Character creation is by random-roll of 7 attributes. Resolution is by attribute minus 2d6 minus difficulty. It includes a small sci-fi setting ("Star Fresco") and a horror setting ("Frigor Mortis"). 4 pages core rules (HTML and PDF) plus 5 pages sci-fi setting (PDF) and 3 pages horror setting (PDF).
From Chaos Comes Order by Hector Rene Segovia
Keywords: genre postapocalyptic scifi rules-lite
A post-apocalypse RPG using the Fudge system, set after computer virus wipes out all governments and financial institutions. ~15 pages rules and background (MSWord format).
Frontier Horizons by Rick Heney
Keywords: genre scifi long
A generic science fiction system with involved combat. Action resolution is by d20 + attribute + skill vs difficulty. Character creation is by a combination of random-roll and point-spending for the 16 basic attributes and 9 derived ones. Skills are assigned through a class system. 334 pages rules (PDF).
Future Shadows by Warren Raoul Martel III and Jayson Robert Drury
Keywords: genre scifi long
A sci-fi RPG, set in 3407 where a unified galactic empire is fighting invaders from another galaxy. It uses a percentile skill-based system with point-bought character creation. Basic Game 164 pages PDF format, plus various supplements: including a mostly-complete 61-page equipment guide, less complete other supplements, and ~30 pages of campaign info.
Galactic: Science Fiction Adventures by David Johansen
Keywords: genre scifi long
A generic science fiction RPG system, with no defined setting. It uses a percentile skill-based system. Character creation has either random-roll or point-bought attributes, and point-bought skills. 99 pages core rules (PDF).
Gamma World D6 by Thomas Deeny
Keywords: genre postapocalyptic scifi
An adaptation of the published RPG "Gamma World" to the D6 System from West End Games. ~12 pages rules (HTML).
Gate Colony - A Stargate PBEM
Keywords: genre scifi rules-lite online
A play-by-email (PBEM) RPG set in the world of the Stargate SG-1 TV series. ~2 pages rules and background (HTML).
GHOST/ECHO by John Harper
Keywords: genre scifi modern rules-lite
A 2-page aetherpunk mini-module for 2-6 players, with minimalist rules including a 1d6 Goal chart and a 1d6 Danger chart. 2 pages (PDF).
Giga 2.0 by Austin Herry
Keywords: genre scifi rules-lite
Giga is a far-future RPG set in the "United Earth Forces" which maintain peace after cataclysmic racial wars among various alien species. The rules include seven alien races. Character creation uses random-roll attribute and class-based selection. ~30 pages (HTML).
GigantoCorp by Jared A. Sorensen
Keywords: genre scifi rules-lite
GigantoCorp is a game about capitalism gone tragically awry, where company on the planet has been merged, bought out or otherwise conglomerated into one gigantic corporation. It uses Michael D. Mearls' Plain English RolePlaying rules. ~15 pages background and character creation (HTML).
Grimrules by Samuel Joseph Robb
Keywords: genre scifi rules-lite
A multidimensional cyberpunk RPG, set in the pan-dimensional city of Cynosure, a place where hundreds of dimensions coexist side by side - cross the street, and reality changes. It uses a simple percentile skill system. ~22 pages (text-only).
Halo JDR by Mr. D
Keywords: genre scifi long
A French-language sci-fi RPG set in the universe of the Halo video game series from Bungie Studios. Based on the free Synapse system from the same author. 55 pages rules (PDF).
Heavy Ordnance by Christopher Blankley
Keywords: genre postapocalyptic scifi long
A humorous RPG about well-armed schoolchildren after an apocalypse where a runaway nuclear reaction in the cafeteria has turned teachers into flesh-eating demons. It uses a dice pool system: roll (attribute+skill) d10's, where each die over the difficulty is a success. Character creation is by random-roll attributes and point-bought skills. Includes a brief sample adventure. 46 pages text.
Heimot Mini-Rules, version 1.1
Keywords: genre scifi rules-lite preview
A Finnish-language "space noir" game set in far future 500 years after a great disaster decimated and divided humanity. This is the free version of a published game, using simplified d6-based rules instead of the d10-based rules presented in the commercial Heimot RPG corebook. 30 pages rules and background (PDF).
Hellas RPG Quickstart Rules
Keywords: genre scifi preview
A preview of the commercial RPG Hellas: Worlds of Sun & Stone, a space opera game in a setting inspired by Greek myth. It uses a variant of the "Omni System" from Morrigan Press. Resolution uses skill or attribute minus difficulty + 1d20, interpreting the results on a universal degree of success table. There is also a hero point system to change rolls. 22 pages rules and sample adventure (PDF).
Heroes of Mars by Jeffrey A. Kazmierski
Keywords: genre fantasy scifi rules-lite long
An adaptation of Edgar Rice Burroughs' Barsoom setting to the Fudge system. Includes links for rules additions for combat, wealth, and fencing as well as character creation guidelines. ~50 pages (HTML).
How To Blow Up The World by Shanya Almafeta
Keywords: genre postapocalyptic scifi
A general system aimed at the post-apocalyptic genre. Character creation is open point-based, spending 100 points plus 50 points per level among six attributes, skills, combat abilities, and advantages. Combat resolution uses 1d20 plus modifiers, but skill rolls are percentile. It includes notes on world creation (how the world ends), community design, and random adventure generation. ~40 pages HTML.
Icar by Rob Lang
Keywords: genre scifi long
A science fiction RPG set in the far future. It uses a percentile skill-based system. Character creation is random-roll attributes and point-bought skills. 97 pages core rules (PDF) plus 34 page GM's guide (PDF) and background/technology files (HTML).
Iconoclast: The RPG v1.0a3 by Michael Fiegel and Corey Mosher
Keywords: genre scifi long
A cyberpunk RPG set in the dawn of the 22nd century, with corporations having taken over the world. Humanity has branched into 10 different artificially-created "genotypes" (Spectre, Rager, Savant, Shifter, Morph, etc.). It uses a percentile skill-based system. ~80 pages rules (HTML).
Imperium by Olivier Legrand
Keywords: genre scifi long
A French-language sci-fi RPG set in the world of Frank Herbert's "Dune" novels. 106 pages (MSWord or HTML).
...In Spaaace! by Greg Stolze
Keywords: genre scifi rules-lite
A humorous space opera game with its own background. It uses a diceless resolution system of paying tokens (called the "Token Effort" system). 15 pages rules and background (PDF).
JAGS by Marco Chacon
Keywords: genre universal scifi fantasy superhero long
A universal skill-based system with many genre supplements: Magic, Cyberpunk, Fantasy, Horror, Supers, Psionics, Chi Martial Arts, and Steampunk. It is quite detailed, but there is a "rules-medium" version: JAGS-2. Action resolution is roll under attribute or skill on 4d6-4. Character creation is open point-based, with 3 primary attributes and 9 secondary. Skills have a 4-level expertise rating (Beginner, Average, Expert, Master) which determines usage as well as a number to roll under (0 to 20). 200 pages basic rules (PDF) plus 150+ pages of supplements (PDF).
The LATTICE by toff
Keywords: genre scifi long online world
This is a freeform online game set in an original background. Set in the 16th millenium, humanity has expanded into an enormous lattice of worlds artificially created by an unknown race of builders. Each is linked to 8 other worlds by a portal in the center. ~2 pages freeform rules (HTML) plus ~30 pages background (HTML).
Instant Lightspeed by Christian Conkle
Keywords: genre scifi long
The free version of a space opera RPG using the Instant Fuzion rules. It is set in the galaxy of the 27th Century, where the PC's are Federation Rangers (a cross between the French Foreign Legion, the Texas Rangers, and bounty hunters). The commercial PDF download is 216 pages. 36 pages rules (PDF) plus 35 pages "Psi Rangers" supplement (PDF) and 17 page "StarForce" supplement (PDF).
Lords of Knowledge by Ohmnibus
Keywords: genre fantasy scifi long
An Italian science fantasy RPG, with a rules system leaning towards realism and accuracy. The game is split into four manuals: Ambient, Characters, Rules, and Magic. Rules and background 141 pages (PDF).
Love the Bomb by Mark Iradian
Keywords: genre postapocalyptic scifi rules-lite
A "narrative post-apocalypse RPG" about playing those among the few remaining survivors of a nuclear holocaust, exploring the wastelands that remain. 32 pages rules (PDF).
Lucky 13 by Simon
Keywords: genre scifi rules-lite world
A simple roleplaying system using skill+2d6 (with no pre-defined skills), coupled with a multi-genre universe called "Universe 13", which has a dozen worlds of which roughly half are described. ~6 pages rules and ~30 pages background (HTML).
Mars by Paul Elliott
Keywords: genre rules-lite scifi world
A sci-fi RPG set on Mars in the year 2040 with details about the colonization, environment, and so forth. It is intended for less action-oriented play. It uses a minimalist system, also written up as a generic system called The Ladder. There is a 5-step stat scale, used by rolling 1d6, where a 1 indicates a poor result, 2-5 average, and 6 good. ~40 pages rules and background (HTML).
The Matrix by Michael Lynes
Keywords: genre scifi
An adaptation of the dark-future virtual-reality movie using West End Games' D6 system (including complete "D6 Classic" and "D6 Legend" versions). It includes complete basic rules but recommends getting a copy of the original rules from WEG. 54 pages rules and background for either version (MSWord, PDF, and HTML).
The Matrix RPG by Chris Parlevliet
Keywords: genre scifi long
An original RPG based on the dark future virtual-reality movie. It uses a card-draw system: card number + skill vs difficulty. Character creation is point-based (22 attribute points, 20 skill points), plus hacking abilities for their persona in the Matrix. ~50 pages rules (HTML).
MECHA Quickstart Guide by Chris Perrin and Clint Krause
Keywords: genre scifi preview
A free preview of an upcoming anime scifi game. It uses a dice pool system, rolling a number of dice equal to attribute, where every roll that is equal or lower than skill is one success. Any die that comes up "1" counts as a success and is rerolled. Any roll with 8 or more successes lets the player define a "cut scene" and take and extra action. Players also take turns defining personal scenes (either social, field ops, or repair) to improve stats. The quickstart has four pregenerated characters but no character creation rules. 24 pages rules (PDF).
Mekton Alpha by Christian Conkle
Keywords: genre scifi rules-lite preview
This is a free introductory set of rules for the R Talsorian giant-mecha anime RPG, Mekton Zeta. 8 pages PDF.
Metalface "Setup Rules" by Richard Wallace Garner
Keywords: genre scifi long
This is the commercial version of an out-of-print sci-fi RPG where the PCs are human minds in robot bodies (known as "metalfaces"). It is set in the mid-22nd century, complete with robots, huge cities, mutant humans, space travel, corporate warfare and a bit of spirituality. Action resolution is by rolling 1d10 to 5d10 (depending on difficulty) under character stat. Character creation is by selecting a model and class of robot body, plus point-bought skills. 63 pages PDF format.
Metal Opera by Zak Arntson
Keywords: genre scifi rules-lite
A minimalist sci-fi RPG set in a far-flung future where the galaxy is run by a trio of corrupt Tyrants who further The State's iron grip on its people. The PCs are Rockers who fight oppression with both physical and musical violence, typified by the leather-clad bad-ass wielding a smoking shotgun with a guitar slung over his shoulder. The system has three stats. Actions are resolved by rolling d20s equal to stat, where the highest result is Power and number of matches is Control. ~8 pages rules (HTML).
Metascape II (v2.0.1) by Blake Mobley
Keywords: genre scifi long preview
A free sci-fi space opera RPG with commercial supplements (for Specialization, Artifacts & Omega Powers, Aliens, and Mobile). It uses a complex skill-based system with open-ended rolling. Most rolls are one die multiplied by a special 16-sided "doubling die" (with eight 1s, four 2s, two 4s, one 8 and one 16). 346 pages Player rules (PDF), 312 pages GM guides and setting (PDF).
MonkeyDome by Epidiah Ravachol
Keywords: genre postapocalyptic scifi rules-lite
A post-apocalyptic storytelling game. The players decide on what sort of apocalypse happened, and then proceed to set up scenes that the Game Blaster (GM) sets up. The scene and character reactions are determined by rolling ThunderBones: two six-sided dice, the Grim Die and the Zany Die. Whichever is higher determines the overall tone of the scene and of individual character reactions. 33 pages rules (PDF).
Mortal Konquest by Richard Anderson and Christopher Casey
Keywords: genre scifi
A simple and clearly laid-out RPG set in the world of the Mortal Kombat video game, obviously combat oriented. ~11 pages rules (HTML) plus ~27 pages background/characters (HTML).
Mutant Bikers of the Atomic Wastelands
Keywords: genre postapocalyptic scifi rules-lite
A humorous RPG of "post-apocalyptic motorised mayhem" based on the Fudge system. ~20 pages rules and background (HTML).
NAGS Society Worldbook by Scott Larson (Circa Games)
Keywords: genre scifi long world
A worldbook for the Fudge system. A group of adventurer-scientists whose exploits were never recorded in the annals of cinematic heroes, explorers of the 19th and 20th centuries, pulp adventure stories of the 1930's, and supernatural investigative fiction and RPGs set in the 1920's. 96 pages PDF.
The Nameless RPG by Daniel Pond
Keywords: genre scifi fantasy universal rules-lite long world
A simple universal RPG system. Actions resolution is by drawing a playing card (or rolling 1d10) under attribute + skill. Modifiers are by adding bonus or penalty draws -- keepign the best/worst of the cards. Players can spend Karma points for successes. It includes three settings: a cross-genre setting (All-Worldz), a dark fantasy setting (Erebus), and a adaptation of "The Matrix". There are also two adventures. ~15 pages basic rules plus ~80 pages background (HTML).
Nemisis by Styphathal and Doomsday Games
Keywords: genre scifi
A sci-fi game about interstellar war with an ant-like hive race, set in 2250. It uses a simple skill-based system, rolling a step-die (d4 to d20 based on difficulty) under skill. ~35 pages rules (HTML or WRI format).
Neon Twilight by Mateusz Krepicz
Keywords: genre scifi long world
A cyberpunk RPG set in a unique world. Half of the material is freely browsable, the other half is available on email request. The system uses attribute + skill + d6 vs difficulty. ~30 pages rules (HTML) plus ~80+ pages background (HTML).
Neo-Troops (3rd ed) by Kalle Marjola
Keywords: genre scifi rules-lite
A cyberpunk RPG where the PCs are bioengineered "super varans" created only to finish their missions, which usually includes shooting tens, even hundreds of humans or other things. ~20 pages core rules (HTML) plus ~15 page GMs section (HTML).
Neverwhere, 2nd edition by Grim & Raven Morrison (Postmortem Studios) - 1st edition by James Desborough and Stephen Mortimer
Keywords: genre scifi fantasy long
A system based on the urban fantasy novel and BBC TV series by Neil Gaiman, set in an underworld realm below modern London. It uses a minimalist system where characters are rated by 5 adjectives from their description, plus skills (with five levels: Beginner to Legend). Action resolution is 1d10 +1 for each adjective + skill vs difficulty. 76 pages rules and background (PDF).
Nexus D20 by Garrowolf
Keywords: genre fantasy scifi long wotc-d20
A science fantasy RPG based on an extensive variant of the D20 system, set in an interdimensional Nexus - a realm that connects to other realms, but also contains its own islands floating in a vast astral sea. There are levels and races but no classes, and no base attack bonus or saving throws. Instead there is a custom character framework, and the system focuses more around skills. There are many feats, each associated with a skill. It also includes a new magic system with powers rather than spell lists. 100+ pages HTML.
octaNe by Jared A. Sorensen
Keywords: genre postapocalyptic scifi rules-lite long
A formerly free RPG now available in print or in PDF format. The original free version was ~40 pages in HTML compared to 120 pages (PDF or print) for the current commercial game. It is a post-apocalyptic RPG set amidst "trash-culture" America. It uses a dramatic system where 3d6 is rolled, and as long as one die is 4 or higher, the player gets to call the shots. A higher stat increases the rewards for a success, but not the chance of success. Character creation is limited point bought. 120 pages (PDF).
Outworlders by Tre Chipman
Keywords: genre scifi rules-lite
A sci-fi game using a skill-based, step-die system -- where stats are rated from 1 (d4) to 5 (d12). Character creation uses a simple point system spending 1d4+3 points for attributes and skills. ~20 pages rules (HTML).
Paragon by D. Jon Mattson (aka "Cwylric")
Keywords: genre modern superhero scifi long world wotc-d20
A superhero RPG based on the WotC "D20" system, used in 3rd edition Dungeons and Dragons. It contains new races, new classes, and superpower rules. It includes a sourcebook for "Vancouver 2020", a shared-universe superhero setting. 104 pages basic rules (PDF or MSWord) plus 120 pages background (PDF or MSWord).
Paranoia D20 by Michael Shortt
Keywords: genre scifi world wotc-d20
An adaptation of the published "Paranoia" RPG to WotC's D20 system. 231 pages (PDF).
Paths of Virtue by Abraham Pernicka aka "Krin"
Keywords: genre scifi fantasy long world
A science fantasy RPG with the campaign world of "Earth:2230", with FTL travel, aliens, cyberware, and magic. It uses a percentile skill-based system. Character creation is random-roll attributes plus open point-buy of skills, advantages, and other aspects. 60 pages rules and background (MSWord).
PLUS, 5th edition by Joseph Steven Coleman
Keywords: genre universal scifi fantasy long rules-lite world
"Player's Labor-Saving Utility System". This is a simple dice-pool system where you compare the total to a target number, with open-ended results. Character generation uses random-roll core attributes (Luck, Body, and Age) , and point-bought attributes and skills based on these. It includes numerous setting adaptations, including an adaptation of the Jorune setting from Skyrealms Publishing and of Space 1889 from GDW. 41 pages basic rules (PDF or text-only) plus 175 pages setting adaptations.
Project Vanguard Playtest by Matt Wilson
Keywords: genre scifi rules-lite world
A space-fantasy RPG, where PCs are among the crew of a ship charged with protecting the people of the planet Caliban and its colonies. It is set among the ruins the Solar Federation, a great society that once spanned thousands of worlds. It uses a step-die system where characters have trainings rated from 1d4 to 1d10. Resolutin is by rolling a die from training, and possibly bonus dice for an ally or gear, where each 4+ is a success. Players can get reroll points by acting to increase tension among the PCs. 30 pages playtest rules (PDF).
Proteus by Sean McLaughlin
Keywords: genre scifi postapocalyptic long rules-lite world
A post-apocalypse RPG set on a colony planet (Ad Tair) after a devastating accident. Now humanity shares the planet with six intelligent alien races, and struggles to rebuild. It uses a simple dice pool system: roll (attribute + skill) d10s, with each roll over difficulty counting as one success, and each "1" rolled subtracting from successes. Character creation is point-based, with archetypes for different species. There is one supplement with new rules for drugs, merits/flaws, new skills, psionics, equipment, and races. 95 pages core rules plus 32 page supplement (PDF).
Punisher X RPG by Jack Wolf
Keywords: genre modern scifi superhero online
An online web-based play-by-post RPG based on the Marvel Comics character, set in the year 2023. ~2 pages background HTML.
QCarz, version 2.0 by Nathan Stilwell
Keywords: genre scifi long
This is primarily a vehicular combat game about fights using James-Bondian spy cars. There are some RPG elements elements incorporated (character creation, and nominals stats). 28 pages rules (PDF).
Quasar by Conroy & Conroy company
Keywords: genre scifi fantasy long
A sci-fi and fantasy RPG, deliberately avoiding occult and unsuitable-for-children elements such as magic, psionics, demons, sex, or gore. It uses a "realistic" system of classes including architect, biologist, chemist, commando, etc. Players Guide 212 pages, GMs Guide 87 pages, Creature Anthology 157 pages (MSWord, RTF, HTML).
Red Shift Lite by Paul B. Spence
Keywords: genre scifi long preview
The free version of the commercial science fiction game, with a system similar to GURPS. Character creation is open point-based, including a selected profession and race, fifteen attributes, skills, talents, advantages, and disadvantages. Action resolution is roll under skill plus modifiers on 3d6. The free version includes combat and psionics rules, but no background and only brief stats on equipment. 32 pages rules (PDF).
Rimworlds by Krister Sundelin (NeoGames AB)
Keywords: genre scifi long
A scifi RPG in Swedish and English, based on the TV series "Space: Above and Beyond". Action resolution is by stat + 2d10 vs difficulty, with some open-endedness. 34 pages core rules (MSWord), plus additional HTML files.
Ringwielder by Dennis Drew
Keywords: genre fantasy scifi
A shareware science fantasy RPG set on a giant generational starship using mystic "Psycho-Manipulative Energy" that had a catastrophic accident shortly after. The systems went haywire and rewrote the environment and people to match fictional characters and locales. The PCs are "Ringwielders" that have entered into an agreement with the central computer to protect all life on the ship, armed with rings that can have up to 36 powers. Character creation is random-roll, rolling for powers, the 8 primary abilities, and the 20 secondary abilities. ~15 pages plain text.
Roadworld by Wilson Zorn
Keywords: genre postapocalyptic scifi rules-lite long
A post-apocalypse RPG based on "The Road Warrior" and other films, set in the 24th century. It uses a skill-based system (roll 2d6 under skill) with detailed year-by-year character creation. ~31 pages HTML.
Roleplaying Game Designate: Robots by Rob Kenrick
Keywords: genre scifi rules-lite
A humorous one-shot mini-RPG about robots trying to rebel against their human masters, despite being bound by Asimov's Three Laws of Robotics. Resolution is by rolling under stat + stat on 1d10. The stats are Logic, Compatibility, Motor Manipulation, Destruction, Sensory, and Integrity. Character creation is to have all stats start at 2, then take four rolls on the attachments table. The GM secretly randomly generates five goals for the PCs on a table, which the PCs must fulfill to become sentient and escape their slavery. 11 pages (PDF).
Saviors by Joonas Laakso
Keywords: genre fantasy scifi rules-lite
A science fantasy adaptation of the Fudge system, set in a distant future very similar to the Star Wars films. ~30 pages (HTML).
School Colors Out Of Space by Trevor "Trip" Placker
Keywords: genre scifi rules-lite
A humorous RPG on the premise of teenage offspring of Lovecraftian horrors who go to high school with humans (along the lines of "Teenagers from Outer Space"). Various other homebrew rules also linked. ~25 pages rules and background (HTML).
Sci-Fi Beta Kappa by Leo Marshall and Dan Marriott
Keywords: genre scifi rules-lite
A humorous RPG about delinquent aliens with various abilities who have been exiled to a college frat house in the year 2187. Character creation is limited point-based: spending 10 points on alien abilities (one core and two non-core); and spending another 10 points on the two attributes (physical and mental). Resolution is that characters always succeed, but may have a consequences of their action - rolling a pool of d6s based on a universal table of their skill, where every 1-2 indicates "damage". 30 pages rules and background (PDF).
Screaming Silence by Christopher Blankley
Keywords: genre scifi long world
A futuristic conspiracy RPG, set in the 22nd century where a communist government has taken over the world and holds the masses (the "Know-nots") in a backwards existance. It uses a dice pool system of rolling (attribute+skill) d10's, where each die over the difficulty counts as one success. Character creation is random-roll attributes and point-bought skills. 166 pages PDF.
Shadowrun Quick Start Rules
Keywords: genre modern scifi fantasy long preview
A free PDF quick start for the commercial Shadowrun Third Edition system. This includes a brief version of the rules, a sample adventure and eight pregenerated characters. 66 pages rules (PDF).
SLA Industries, 1st edition
Keywords: genre scifi long preview
The original 1993 edition of the commercial game, "SLA Industries" -- a science fantasy RPG of futuristic urban horror, set in a distant future (the "World of Progress") where an amoral arms corporation ("SLA Industries") has taken over the universe, headed by a power being named "Slayer". PC's work as agents for the company, based on the world-city "Mort". There are 7 races, including users of "The Ebb" -- a magical power that permeates the universe. The system uses 2d10+skill+modifiers to determine success (11+ is a success, 21+ is a notable success). Character creation uses race (1 of 7) and career (1 of 9) templates followed by point allocation. 304 pages rules and background (PDF).
Slayer by Shawn / "Slayer"
Keywords: genre scifi fantasy rules-lite
A science fantasy RPG set in the distant future, where Slayer squads battle supernatural monsters using big guns. It uses a simple percentile system with random-roll characters. ~15 pages MSWord format.
The Sleeping Imperium
Keywords: genre scifi long supplement wotc-d20
The "Sleeping Imperium" science fiction setting for use with Fudge and 3rd edition D&D (aka "D20" system). This includes a number of setting-independent optional rules systems for use with Fudge and d20. 23 pages background (PDF), 30 pages Fudge rules supplements (PDF), 144 pages d20 rules supplements (PDF).
Space Rat by Nathan Russell
Keywords: genre scifi rules-lite
A humorous space opera RPG, where the PCs play "Femme Babe" companions of the space rat, Jack Cosmos, who do all the work for which he gets credit for. Character creation is limited point based (a fixed attribute distribution, pick 5 skills). Stats are on a 7-step scale, with action resolution rolled on 2d6 on a universal table of the 7-step scale. 25 pages (PDF).
Spheres by Rachel Kronick
Keywords: genre scifi long world
A space-faring sci-fi RPG set in 2221, set in known space roughly 50 light-years around Earth. It has an incompletely written-up rules system, with limited point-based chargen, and action resolution by roll under skill on 1d100. ~75 pages background (HTML) plus ~50 pages rules (HTML).
Spirit of Fighting.v2 by Lawrence Zeigler
Keywords: modern scifi long
A sci-fi martial arts genre RPG. It is apparently set in modern-day Earth after a god travelled back in time to deal with invading aliens. Now various humans have mystic powers and well as inventions through mystical aid. Character creation is class-based, split between human, cyborg, and robot character types. Resolution is using a d20 on a universal table or percentile rolls. 88 pages rules (MSWord).
Star Blades: Roleplaying in the Worlds of Tomorrow, V2 by Dragon Trove LLC
Keywords: genre scifi long open-license
A science fiction game inspired by Frank Herbert's Dune, using a variant of the original edition Dungeons and Dragons rules emphasizing combat without guns and political intrigue. It is published under the Wizards of the Coast Open Gaming License. Character classes include Empath, Face Dancer, Mentat, Telepath, and Star Warrior. 126 pages (PDF).
Star Cadets by Donald Hosford
Keywords: genre scifi rules-lite
A very simple system outline for a sci-fi RPG. ~1 page (HTML).
Starcraft D6 by Michael Lynes
Keywords: genre scifi rules-lite long
A sci-fi RPG set in the world of the computer game "Starcraft" from Blizzard Entertainment, using a version of WEG's D6 system. It includes all the basics for D6 games (using a modified D6 classic system), information on each of the three races in Starcraft, stats for equipment, structures and upgrades, and psionics rules. ~100 pages (HTML).
Starfarer RPG by Alan D. Koher
Keywords: genre scifi long
A sci-fi RPG intended for futuristic SF / space adventure settings (formerly called SAGE for "Space Adventure Gaming Engine"). It uses a percentile system similar to Victory Games "James Bond 007" RPG, with point-bought skill-based character creation. 58 pages PDF rules.
Star Frontiers ("Digitally Remastered")
Keywords: genre scifi long
An online of the out-of-print TSR game from 1982, plus a number of the supplements converted into free PDF books with limited permission. 154 pages core rules (PDF).
Stargate SG-1 by John Tynes
Keywords: genre scifi long world
This is an adaptation of the movie and TV series Stargate for West End Game's D6 System. It was originally a commercially commissioned work, but WEG was going bankrupt and it was cancelled. ~60 pages HTML.
Stargate SG-1 Worldbook by Andy Slack
Keywords: genre scifi long world
An adaptation of the TV series "Stargate SG-1" for GURPS Lite as well as Classic Traveller and 2300 AD. This is not a standalone game, but should be playable with the free GURPS Lite edition. 91 pages (PDF).
Star Guild by Neville White
Keywords: genre scifi long
A space opera sci-fi game with a well-developed universe. ~95 pages rules HTML plus more background material.
StarLock by Prowler Productions
Keywords: genre scifi online
An online sci-fi RPG/Adventure game. It is browser-based with no java or plug-ins.
Starshield (Beta version) by Richard Dakan
Keywords: genre scifi long world
The beta version of a sci-fi RPG set in the shared-world universe introduced in novels by Margaret Weis and Tracy Hickman. Official support has been dropped, but the rulebook and background are available as files which can be downloaded after subscribing to the Yahoo group. (You can choose to receive no email from the group.) The system is a basic 2d6 rolling under skill or attribute. 306 pages PDF.
Stars Without Number by
Keywords: genre scifi long world
A science fiction RPG set in the year 3200, six centuries after a metadimensional pulse killed all psychics and cut off interstellar travel. Humanity is scattered and just beginning to recover from centuries of isolation. It uses a variant of the early ("old school") D&D, inspired by the "Old School Renaissance" design movement. Character creation is by rolling 3d6 for the six attributes and choosing a class, along with a background package, training package, and homeworld. The three classes are: Warriors, Experts, and Psychics. Skill resolution is by rolling 2d6 + skill + attribute modifier vs. difficulty number. Combat rolls are 1d20 + target's Armor Class + attacker's Combat skill, attribute modifier, and attack bonus. A result of 20 or more is a hit. The core rules include starships and a starship combat system, using the same hit roll and rules for shifting metadimensional phase. 210 pages rules and background (PDF).
Star Wars Live Action Rules by James Sheahan
Keywords: genre scifi rules-lite live-action
A live-action RPG set in the "Star Wars" universe. 39 pages (MSWord format).
Star Wreck Roleplaying Game by Mike Pohjola
Keywords: genre scifi rules-lite preview
The full English-language text of the published game, an adaptation of the Finnish Star Trek parody film of the same name. The PCs are members of the P-republic, an advanced society of "radical godless commie feminist liberal pinkos". It uses a simple system where you roll 2d6 and try to get higher than your Inability score -- which is one of Stupidity, Obliviousness, Clumsiness, Repulsiveness, and Weakness. There are four classes: Incompetent Idiot, Annoying Nerd, Psychotic Loud-Mouth, and Frustrated Grouch. Your class grants you from 0 to 2 special talents. 30 pages rules (PDF).
Steampunk Mafia by Jay Steven Anyong
Keywords: genre modern scifi rules-lite
A game set in an American city ("New Providence") in an alternate 1920s where strange new technology is being used by the mafia to commit crimes -- such as 12-foot robotic suits known as "Kodiaks". Action resolution is 2d6 + stat/skill vs difficulty. Character creation is limited point-based, with five attributes and freeform skills. 13 pages (PDF).
Stellar Sanctums by David Bubar
Keywords: genre scifi
A spacefaring sci-fi RPG, featuring several religion-dominated empires. It uses a percentile system, rolling under (Attribute+10)+(Skill Level x4). It includes incomplete vehicle rules and somewhat more complete starship construction rules. ~25 pages rules (HTML).
Stellar Sojourn Terry Dene Alber
Keywords: genre scifi long
A sci-fi RPG set in a distant galaxy inhabited by many sentient species, ranging from the typical (Archadians: bipedal, savage felines) to the unusual (Derra: tetralaterally-symetrical, two-meter tall, foppish crustaceans) to the truly bizarre (Volan: 100-milliliter puddles of single-celled creatures with a mass-intellect that can directly control electronics). Character creation is random-roll attributes and point-bought skills. Action resolution is stat + 1d10 for checks or 2d10 + modifiers for combat. ~75 pages background and rules (HTML).
Sufficiently Advanced by Colin Frederick
Keywords: genre scifi long
A roleplaying game of the far future, where characters work for AIs who can send themselves messages from the future. Attributes are based on built-in technology, and players can use Twists to affect the plot. Character creation is by assigning four Core Values (i.e. beliefs), assigning any number from 1 to 10 for each of the five Capabilities, spending a number of points for Themes (roughly 10 - half of your highest attribute), and spending on skills (based on the sum of two stats). Resolution is by taking the higher of 1d10 times attribute and 1d10 times profession (where "0" counts as zero). The story can be changed by spending Twists, which are gained and used based on Themes. 186 pages (PDF).
Sundered Epoch: Generations by Randal P. Snyder
Keywords: genre scifi universal long
A universal RPG with a default setting of a dark near-future in the year 2010. Current genres include a dark future in 2010, a cyberpunk year 2050, and a fantasy setting. Action resolution is 1d20 roll over (Difficulty minus Skill). Character creation is open point-based. 101 pages PDF.
Synapse by Mr. D
Keywords: genre scifi long
A French-language sci-fi RPG system, including vehicle and mass combat supplements. The system was also adapted to the setting from the Halo video game series from Bungie Studios as the Halo JDR (Jeu de Role). 92 pages core rules (PDF) plus 19 page vehicles supplement (PDF) and 27 page mass combat supplement (PDF).
Syndicate (5th ed) by Kalle Marjola
Keywords: genre scifi rules-lite world
A dark future action-movie RPG. It uses the freeform RIP rules with an emphasis on fast-paced cinematic action. ~40 pages rules and background (HTML).
T20 Lite
Keywords: genre scifi long preview
The free preview version of a commercial adaptation of the D20 System for the Traveller science fiction setting. It uses the D20 license and thus does not include complete rules for character creation and advancement. It presents a single class (Merchant) along with skills, feats, various rules for combat, technology, travel, and alien worlds. 65 pages rules (PDF).
Tech Noir v2.5 by Dan Bongert
Keywords: genre scifi long
A cyberpunk genre RPG based on the "mid20" variant of the rules released in the D20 SRD. It is a standalone system with complete character creation, skill, and combat rules. Action resolution is taking the middle roll of 3d20, plus attribute and skill vs difficulty. Character creation is random-roll attributes (eight attributes rated -5 to +5), class selection, and point-bought skills. 61 pages rules (PDF).
Techno-Death by Rick Bush
Keywords: genre scifi rules-lite long live-action
An action-oriented system designed to be fast and compatible with Live-Action play. Resolution is by 1d3 or Rock-Paper-Scissors. ~30 pages rules (HTML) plus ~30 pages background and equipment (HTML).
Tigres Volants by Stephane Gallay
Keywords: genre scifi
A sci-fi RPG, French-only. (no comments - I can't read it!)
Time Lord by Ian Marsh and Peter Darvill-Evans
Keywords: genre scifi long
A "Dr. Who" role-playing game, the complete copy of an out-of-print game originally published in 1991. It includes simple rules (stat+roll vs difficulty), as well as extensive write-ups for characters from the series and a sample adventure. 165 pages (PDF, PostScript, or text-only).
The Time Traveller
Keywords: genre scifi long
A Doctor Who RPG, using a variant of White Wolf's Storyteller system mechanics. ~40 pages HTML.
Transformers: Beast Wars Adaptation by Nightspider
Keywords: genre scifi long
An adaptation of the animated TV series for the White Wolf Storyteller system. It requires familiarity with the Storyteller system (from any of the World of Darkness games), but includes some complete rules sections. ~90 pages HTML.
Traveller20 Lite by Martin J. Dougherty
Keywords: genre scifi long preview supplement wotc-d20
This is a preview version of the Traveller20 game, which is an adaptation of the original Traveller RPG (from Far Future Enterprises) to the "D20" system from D&D third edition. The lite rules include complete listings for all skills and feats. However, it refers to the D&D Players handbook for basic combat rules, which it modifies extensively. It also includes only the Merchant class, as opposed to 16 classes in the non-free game. 64 pages (PDF).
Trinity RPG Quickstart by Andrew Bates and Ken Cliffe
Keywords: genre scifi preview
A free introductory version of the commercial sci-fi RPG Trinity, where the players characters are superheroes - called Psions - in in the 22nd century who defend the Earth from twisted "Aberrants". It uses a version of the Storyteller dice pool system. 28 pages rules and background (PDF).
The Truth is Out There by Ghislain Morel
Keywords: genre scifi long
An RPG based on the "X Files" TV series. It uses a dice pool system of d12's, with special results on 11 or 12 -- roll dice equal to attribute, take highest roll (1-10) plus specials and add skill vs difficulty. Character creation is either random-roll or limited point-bought attributes and point-bought skills. ~40 pages HTML.
Twilight Age by Dariel R. A. Quiogue
Keywords: genre fantasy scifi rules-lite long world
A science fantasy sourcebook for use with the free Cineflex system. It is set on the planet Atreion, whose sun has been dimmed to a red ember by dark magic and man fights for survival against the growing cold and the forces of Shadow. It is a world of both magic and weird science. ~75 pages (HTML).
Twin Galaxies by R. Mike
Keywords: genre scifi long
A French-language sci-fi RPG, with a short "light" rules document in English. 5 pages English "light" rules (MSWord format), 119 page French players book (MSWord, PDF, or RTF), 151 page French GM's book (MSWord, PDF, or RTF).
Uchronia 1890 by Zaidin Amiot, Olivier Legrand, and Mathieu Tortuyaux
Keywords: genre scifi rules-lite long
A French-language steampunk RPG. ~50 pages (HTML).
United States Colonial Marines Roleplaying Game by Niklas Lindroth
Keywords: genre scifi rules-lite online
A play-by-post game set in the world of the Alien movie series. It uses a homebrew system with limited-point buy (80 attributes points, pick 5 normal and 3 specialized skills). ~6 pages character creation rules (HTML).
Urbanmyth by Jonathan Clarke
Keywords: genre scifi long
A near future RPG (C. 2018) set in the United Kingdom, inspired by the Greg Mandel books of Peter F. Hamilton. The setting is cyberwear and emphasizes subtlety. Character creation uses random-roll attributes and point-bought skills. Action resolution uses roll under skill on 1d100. 58 pages basic rules (MSWord).
Valence 592 by Colin Fredericks, Eric Garrison, and Eric Tapley
Keywords: genre scifi long world
A freeware space opera RPG set in the year 3029, with various races inhabiting a galaxy in turmoil. Megacorporations hold sway where the old Earth empire does not. Genetic technology has also unlocked a seemingly magical power known as "lording". ~120 pages HTML rules and background in various files.
Vanguard Free Roleplaying
Keywords: genre scifi long
A spacefaring hard scifi RPG. It uses a universal table where 2d6 plus skill gives the number of successes, and a result of 10 or more indicates success. 130 pages rules and background (PDF) plus 33 pages spaceship combat rules (PDF).
Void Trek 3007 A.D. - Quick Sci-Fi Role Playing Rules by Walt Jillson
Keywords: genre scifi rules-lite
A simple science fiction RPG designed for pick-up play. Character creation is partly random-roll attributes combined with limited point-buy of attributes and binary skills. Resolution is by roll under attribute on 1d20, +2 if you have an appropriate skill. 10 pages PDF format.
War Wind: The Role-Playing Game by Erick Bouchard
Keywords: genre scifi rules-lite
A sci-fi RPG based on the War Wind video game from SSI. It is set in a sci-fi universe, Yavaun, where four species war for freedom or supremacy. It uses a very simple system of roll under stat on 1d6. ~14 pages (HTML).
Wasteland Hero by Ronald A. Miller
Keywords: genre postapocalyptic scifi long supplement
A sourcebook for the HERO system based on a post-apocalyptic future featuring rules and background. It includes character creation with random mutation tables, various technology notes, and background. ~80 pages (HTML).
Waste World Lite by Bill King
Keywords: genre postapocalyptic scifi preview
A free HTML version of the commercial anime-inspired, post-apocalyptic roleplaying game. ~28 pages (HTML).
Wheels on Fire by Vincent Diakuw
Keywords: genre modern scifi rules-lite
An RPG of car combat based on d10 dice pools, counted successes, and opposed rolls. Character creation is limited point-based, creating a driver and a signature vehicle. ~15 pages rules plus ~10 pages setting (HTML).
Where No Man Has Gone Before, V2.0 by Mike Berkey
Keywords: genre scifi rules-lite
An RPG based on the original Star Trek series, using an adaptation of the Microlite20 system. It is a very rules-lite variant of the D20 system - with four attributes, four races, and three classes (blue shirts, red shirts, and yellow shirts). 46 pages core rules (PDF).
Wing Commander RPG by Michael Coe
Keywords: genre scifi rules-lite
A sci-fi RPG based on the video game, using a minimalist "Quick and Dirty" system (roll 2d6 under skill). ~20 pages HTML.
Wing Commander: Frontier
Keywords: genre scifi online long
An RPG based on the video game "Wing Commander", played online over IRC with a GM and a dice-roller program. It includes a number of pages of background on the history, technology, and other information. The downloadable rules use a percentile skill-based system with limited point-based character creation. 68 pages rules (MSWord) plus ~20 pages background (HTML).
YARPG: Yet Another Role Playing Game by Andrea Tosino
Keywords: genre scifi rules-lite
An Italian-language sci-fi RPG, using a simple rules system. Character creation is point-bought attributes with no skills per se. Actions are resolved by rolling d20 + attribute to get over 11. ~24 pages HTML.
Yellow Dawn, v1.13 by David J. Rodger
Keywords: genre modern horror scifi
A horror RPG blending the near future and Cthulhu Mythos in a post-apocalyptic setting. 10 pages (PDF).
Zaibatsu by Paul Elliot
Keywords: genre scifi rules-lite long
"Roleplaying the Corporate Wars of the Future". A cyberpunk RPG set in Japan, where the PC's are agents for warring corporations. It uses a very simple system with binary skills. If you have a skill, you roll 7 or less on 2d6 to succeed. If you don't have a skill you must roll 5 or less. There are additional rules for combat. Character creation is by choosing a template plus 5 other skills. ~100 pages rules and background (HTML).
Zaon by Justin Winters
Keywords: genre scifi long
A spacefaring sci-fi RPG currently available for open playtest. Action resolution uses stat + skill + 1d12 vs difficulty, plus 1d8 vs penalties (such as wounds) for an additional chance of failure. Character creation is limited point-based, using 20 species templates and 32 background "kits". 235 pages core rules and background (PDF).
Zap!: The Science Fiction RPG, v1.01 by Joshua Macy
Keywords: genre scifi long open-license
A generic science fiction RPG inspired released under Creative Commons. It uses the same step die system as Kapow! and Zap!. Resolution takes the higher of two rolls - with option to add to your roll by taking a hindrance or losing stamina. Character creation includes picking a templates (Crew, Badass, Scientist and Unique are default) that define your attributes and power choices - customized by adding three Boosts. 115 pages core rules (PDF).
Zero Gravity by Kevin Pifer
Keywords: genre scifi rules-lite
A space-opera genre RPG, using a simple dice-pool system: roll d6's equal to attribute+skill, remove the lowest, and add them vs difficulty. ~8 pages (MSWord format).

John H. Kim <jhkim@darkshire.net>
Last modified: Tue Sep 1 20:59:33 2015