Free "science fiction" games
Play games defined by keyword "science fiction" sorted alphabetically by title.
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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Amiga
Amstrad CPC
Android
Apple II
Atari ST
Commodore 64
DOS
Free BSD
Linux
Mac OSX
Nintendo Switch
PlayStation 2
PlayStation 4
Sega Genesis
UNIX
Windows
Xbox
Xbox One
browser
iOS
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Cube 2: Sauerbraten
shooter / first-person shooter
Dot3 Labs
Cyberpunk Dreams
RPG
Late Night Games
Dark Horizons Lore: Invasion
simulation / first-person shooter
GarageGames
Decker
RPG / roguelike
Shawn Overcash
Delores: A Thimbleweed Park Mini-Adventure
adventure / point & click
Terrible Toybox
Diaspora
simulation / space combat
Diaspora Developement Team
Digital: A Love Story
adventure / visual novel
Christine Love
Distorted Travesty 1
platformer
ZephyrBurst
Distorted Travesty 2
platformer
ZephyrBurst
Distorted Travesty 3
platformer
ZephyrBurst
Doom RL
shooter / roguelike
Kornel Kisielewicz
Dreamweb
adventure / point & click
Creative Reality
Echoes+
action / arcade
Binary Zoo Studios
Electro Man
platformer / run and gun
xLand Games
Empire Universe 3
strategy / MMORTS
Looki Publishing
Endgame: Singularity
simulation
Endgame: Singularity team
Endless Sky
action / space exploration
Michael Zahniser
Enemy Nations
strategy / real-time strategy
Windward Studios
Escape from the Vault
RPG / roguelike
Max Breedon
EVE Online
simulation / MMORPG
CCP Games
Factorio
simulation
Wube Software