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Sci-fi

Science-fiction. Commonly including things like aliens, advanced technology, and settings of outer space or distant planets. 

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sci-fi

Singleplayer

Games that can be played alone

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single-player

New & popular
for Windows with Steam keys tagged Sci-fi and Singleplayer (49 results)

49 results

Explore games for Windows with Steam keys tagged Sci-fi and Singleplayer on itch.io · Upload your games for Windows with Steam keys to itch.io to have them show up here.

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Deadnaut
$9.99
Real-time tactics meets cosmic horror - remotely command a squad of outcasts as they delve the husks of derelict ships.
Screwfly Studios
Action
Fear Equation
$14.99
Turn-based horror strategy - play as the engineer of a train built to withstand a deadly fog that turns nightmares real.
Screwfly Studios
Survival
Dr. Professor Scientist's Weapons Testing Facility
$4.99
Program Your Tower Defense!
Cool Smithy Games
Strategy
Ultra Mission™
$2.99
THE DATE: January 12, 2081. THE LOCATION: Otto Labs headquarters. THE OBJECTIVE: Find out what the heck is going on!
Gumbo Machine, LLC
Shooter
Astral Flux
$9.99
Action platformer with roguelike elements
Cosmocat
Action
GIF
ΔV: Rings of Saturn
$9.99
Hard sci-fi, top-down space simulator, with every aspect backed up by real physics and science.
Koder
Simulation
Turnament
$7.99
A sci-fi themed puzzle game with RTS elements.
muddasheep
Strategy
Space Captain McCallery Ep. 3: The Weaponmaster's Challenge
$4.99
Tales of the Renegade Sector
Action
OASIS: Tokyo
$6.99
Inventory Management FPS
sky
Shooter
Interstellar Space: Genesis
$9.89
-67%
An epic turn-based space 4X strategy game and spiritual successor to Master of Orion II: Battle at Antares!
Praxis Games
Strategy
BEACON
$19.99
Mutate yourself to victory as you scavenge an uncharted alien planet in this stylish sci-fi action rogue-like.
monothetic
Action
Growing My Grandpa!
$5
Yames
Adventure
GIF
Schildmaid MX
$14.99
Neutral. Shield. Danger.
HitP Studio
Shooter
GIF
CreatorCrate
$4.99
A slapstick rampage. Outsmart everything that wants you dead with your grabby robot arm. Improvise and CREATE!
CreatorCrate
Platformer
Beyond Sunset Demo
A cyberpunk action RPG
Metacorp
Shooter
The Evolving World: Catalyst Wake
$6.99
After three apocalyptic events known as the "Catalysts", what remains of humanity fights for peace.
LockedOn
Visual Novel
LightWave
$14.99
LightWave is a 2D pixel platformer featuring highspeed, fluid movement.
nopetrides
Platformer
Interstellar Space: Genesis - Natural Law
$4.99
-50%
This expansion adds 2 new races fully equipped with unique capabilities, 9 new rulers, 4 new musics, and 4 new leaders!
Praxis Games
Strategy
For The Warp
$14.99
A roguelike deck-building game in space!
Massive Galaxy Studios
Strategy
Electronic World Z
$4
Electronic World Z is a 2D Challenging Platform game based on the story of a Robot called DGIN TV
AMAXANG GAMES
Platformer
GIF
helionaut
$3
In bundle
open-world galaxy adventure game
Sokpop Collective
Adventure
GIF
SKIPCHASER
$4.99
Story-driven sci-fi fantasy shooter with procedural missions, deep weapon customization and action/adventure elements
Ponywolf
Shooter
Solar Rogue
$15
Tactical Roguelike Space Adventure
ombarus
Strategy
GIF
Steam Marines 2
$25
Steam Marines 2 - a steampunk tactics game
WorthlessBums
Strategy
Space Grunts 2
$9.99
(Steam key included) Fastest turn-based card battle roguelike
Orangepixel
TAXINAUT
$12.99
An open-world exploration game where you are a taxi-driver in space.
mosgrom
Role Playing
Exile Squadron
$4.99
Defend Earth against the Colonies in this sci-fi shoot 'em up!
One Bit Studio
Action
DOUBLE INVASION!!
$7.99
Guide an army of nano-bots through your alien organs to solve puzzles and cure your infected body!
Goose Ladder Games
Puzzle
Core Defense
$9.99
A roguelike tower defense game with a dash of deckbuilding.
ehmprah
Strategy
GIF
REDO!
$9.99
Dark Sci-fi Metroidvania
Redo!
Action
Starship Rubicon
$9.99
Olive
Action
Bewildebots
$7.99
Please try to keep our robots alive . They've been through enough...
JadeusGames
Puzzle
Alt-Frequencies
$4.99
An audio mystery set in a time loop. Record, rewind time and broadcast snippets of radio shows!
Plug In Digital
Interactive Fiction
Space Captain McCallery Ep. 2: Pilgrims in Purple Moss
$4.99
Explore a mysterious half-sunken ruin on an alien world in this Low-Poly Action-Adventure game!
Tales of the Renegade Sector
Action
STARDROP
$14.99
STARDROP - Salvage and Rescue Operations
Joure
Adventure
Robothorium
$14.99
Robothorium is a futuristic turn-based, rogue-like RPG
Goblinz Studio
Role Playing
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