Best Sci-Fi Tabletop Games

Science fiction tabletop RPGs occupy a special place in the gaming landscape. They combine the collaborative storytelling of traditional role-playing with the boundless possibilities of speculative fiction -- faster-than-light travel, alien civilizations, galactic empires, and technologies that challenge the imagination. But with dozens of systems available, choosing the right one for your gaming group can be a daunting task.

We have played, studied, and debated these systems for years. This article presents our picks for the best sci-fi tabletop RPGs ever published, along with honest assessments of their strengths and weaknesses. Whether you prefer hard science fiction realism or cinematic space opera, there is a system here for you.

1. Traveller (1977 - Present)

No discussion of science fiction RPGs can begin anywhere other than Traveller. First published by Game Designers' Workshop in 1977, Traveller defined the genre and established conventions that persist to this day. Its setting, the Third Imperium, spans thousands of star systems connected by jump drive technology, with a detailed history stretching across millennia.

What makes Traveller endure is its character generation system, where players walk through their character's career history before play begins. A naval officer might emerge with piloting skills and a ship mortgage. A drifter might have a criminal record and a hidden stash of credits. The process is compelling in its own right, producing characters with built-in backstories and motivations.

The current Mongoose Publishing edition (Traveller 2nd Edition) is the most polished version available. It retains the essence of the original while modernizing layout, organization, and some mechanics. Traveller excels at sandbox campaigns where trade, exploration, and political maneuvering take center stage. Combat exists but is lethal and best avoided -- a deliberate design choice that encourages problem-solving over gunplay.

Best for: Groups who enjoy hard science fiction, economic gameplay, and character-driven stories within a vast established setting.

2. Star Wars d6 (1987)

West End Games' Star Wars: The Roleplaying Game is often cited as one of the greatest licensed RPGs ever made. Its d6 system is elegant in its simplicity: characters have attributes and skills rated in dice, and you roll your dice against a target number. That is essentially the entire mechanical framework, and it works beautifully.

What truly set this game apart was its sourcebook line, which expanded the Star Wars universe so thoroughly that Lucasfilm used West End Games material as a reference bible for years. The game captures the cinematic feel of the original trilogy perfectly. Force powers feel mystical and dangerous. Blaster fights are fast and fluid. Starship chases are genuinely exciting.

Although West End Games closed its doors long ago, the d6 system was released under an open license, and used copies of the Star Wars sourcebooks remain highly sought after. For pure Star Wars flavor, nothing has matched it since.

Best for: Groups who want fast, cinematic Star Wars action with minimal rules overhead.

3. Star Wars d20 / Saga Edition (2000 / 2007)

Wizards of the Coast brought Star Wars to the d20 system in 2000, leveraging the mechanics familiar to Dungeons & Dragons players. The initial d20 version was functional but sometimes felt like D&D with a Star Wars skin. The Saga Edition, released in 2007, corrected this problem dramatically, creating a streamlined system that many consider the pinnacle of d20 design.

Saga Edition introduced a condition track for damage, a talent tree system for character customization, and a unified mechanic for the Force that felt both powerful and balanced. Starship combat integrated seamlessly with personal-scale rules. The game supported everything from gritty Clone Wars military campaigns to Rebellion-era smuggler adventures.

Best for: Groups familiar with d20 mechanics who want a robust, well-supported Star Wars experience.

4. Alternity (1998)

TSR's Alternity was an ambitious attempt to create a universal science fiction RPG system. Its "step die" mechanic -- where situational modifiers change the size of a bonus or penalty die rather than adding flat numbers -- was innovative and produced genuinely interesting probability curves. The core game shipped with two settings: the gritty near-future Dark*Matter and the space opera Star*Drive.

Star*Drive, in particular, offered a compelling original setting with multiple stellar nations, alien species, and a mysterious region of space called the Verge where civilization's reach grew thin. Alternity handled everything from cybernetics to psionics to starship design with consistent, well-integrated mechanics.

The game was discontinued when Wizards of the Coast acquired TSR, but it retains a devoted following. A revised edition was released by Sasquatch Game Studio in 2017, though the original remains the version most players know and love.

Best for: Groups who appreciate innovative mechanics and enjoy original science fiction settings with depth.

5. GURPS Space (1988 - Present)

GURPS (Generic Universal RolePlaying System) by Steve Jackson Games is the ultimate toolkit RPG, and GURPS Space is its science fiction supplement. Rather than providing a single setting, GURPS Space gives GMs the tools to build any science fiction universe they can imagine -- from hard science to cinematic space opera to post-apocalyptic generation ships.

The system uses a simple 3d6 roll-under mechanic, but character creation and world-building can be extraordinarily detailed. GURPS Space includes rules for designing star systems, calculating travel times, creating alien species from biological first principles, and modeling everything from laser weapons to force screens with real-world physics in mind.

The trade-off is complexity. GURPS demands more preparation from the GM than most systems, and character creation can take an entire session. But for groups who want granular control over their science fiction universe, nothing else comes close.

Best for: Detail-oriented groups who want to custom-build every aspect of their sci-fi setting.

6. Fading Suns (1996)

Fading Suns by Holistic Design occupies a unique niche in the sci-fi RPG landscape. Set in the sixth millennium, it presents a universe where a feudal human empire stretches across the stars, the suns themselves are slowly dimming, and technology is regarded with a mixture of reverence and superstition by a powerful church. Think Dune meets Warhammer 40,000 meets medieval Europe.

The setting is the star of Fading Suns. Its mix of science fiction and gothic atmosphere creates a tone unlike any other RPG. Characters might be noble house scions, church inquisitors, merchant guild traders, or alien converts navigating a decaying civilization. The game's Victory Point System is straightforward, and the emphasis is squarely on drama, intrigue, and the tension between progress and tradition.

Best for: Groups who want a unique, atmospheric setting that blends science fiction with feudal politics and religious intrigue.

System Comparison

Making Your Choice

Every system on this list has earned its place through years of play, refinement, and passionate community support. The best sci-fi tabletop game is ultimately the one that matches your group's preferences for complexity, setting, and play style.

If you are brand new to science fiction RPGs, we recommend starting with either Star Wars d6 for its simplicity and universal appeal, or Traveller for a more original, sandbox-driven experience. Both systems have large online communities, extensive fan-created content, and decades of proven gameplay.

For a comprehensive catalog of science fiction RPGs both in and out of print, visit Mongoose Publishing, which continues to support and expand the Traveller line with new supplements and adventures.

Whatever system you choose, the essential experience remains the same: friends gathered together, imagining journeys among the stars, facing challenges no single mind could conjure alone. That is the magic of science fiction tabletop gaming, and it has never been more alive than it is today.