Best free "science fiction" games

Play games defined by keyword "science fiction" sorted by user rating.

GAME SETTING - Exploration in deep space, mech battles, cyberpunk lovestories, UFO invasions. Every theme even remotely tied to science fiction has been implemented in a video game one way or another. Free games make no exception; from Star Trek to Star Wars, developers still draw much inspiration from sci-fi.


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dark-horizon-

Dark Horizons Lore: Invasion

simulation / first-person shooter
GarageGames
katakis-

Katakis

shooter / shoot 'em up
Factor 5
star-trek-online-

Star Trek Online

RPG / MMORPG
Cryptic Studios
blossom-bloom-

Blossoms Bloom Brightest

adventure / visual novel
Reine Works
hawken-

Hawken

shooter / MMOFPS
Adhesive Games
computer-open-door-

Computer, Open That Door!

puzzle
Paul Lawitzki and Ralf Zimmer
shadow-warrior-

Shadow Warrior

shooter / first-person shooter
3D Realms
warsow-

Warsow

shooter / first-person shooter
Warsow Team
aliens-RL-

AliensRL

action / roguelike
Kornel Kisielewicz
polybot-7-

POLYBOT-7

RPG / roguelike
Kyzrati
wildstar-

WildStar

RPG / MMORPG
Carbine Studios
alien-arena-

Alien Arena

shooter / first-person shooter
COR Entertainment
robbo-

Robbo

puzzle / action puzzle
Epic MegaGames
starfleet2-

Star Fleet II: Krellan Commander

strategy / space combat
Interstel
star_wraith_3-

Star Wraith III: Shadows of Orion

simulation / space combat
Starwraith 3D Games
martiandreams-

Ultima Worlds of Adventure 2: Martian Dreams

RPG / old school RPG
Origin Systems
xonotic-

Xonotic

shooter / first-person shooter
Team Xonotic
alien-swarm-

Alien Swarm

shooter / run and gun
Valve
nitronic-rush-

Nitronic Rush

action / racing
Team Nitronic
dreamweb-

Dreamweb

adventure / point & click
Creative Reality

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