New & popular paidwith Steam keys tagged Sci-fi (176 results)
Explore games with Steam keys tagged Sci-fi on itch.io. Science-fiction. Commonly including things like aliens, advanced technology, and settings of outer space or distant plan · Sell your games with Steam keys on itch.io to have them show up here.
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Stationeers
$34.99
Station construction simulation featuring full atmospherics, physics, for single and multiplayer
Simulation
HANGAR 8
$3.99
Brave the looping space station, spot anomalies, collect key items, and escape the nightmare!
Adventure
Walthros: Renewal
$14.99
Make some friends, eat some burgers, and unearth terrible secrets from the depths of space.
Role Playing
NiGHT SIGNAL
$9.99
A short first-person horror experience about picking up strange signals after dark on your brand new television set.
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.
Survival
Deadnaut
$9.99
Real-time tactics meets cosmic horror - remotely command a squad of outcasts as they delve the husks of derelict ships.
Action
Tau Cubis
$6.20
Tau Cubis is a Mazing Tower Defense game in colorful Scifi Landscapes. Repel the onslaught of crazy robots !
Strategy
Program Your Tower Defense!
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!
Shooter
Roguelike mecha RPG set in a world recovering from the apocalypse.
Role Playing
ΔV: Rings of Saturn
$9.99
Hard sci-fi, top-down space simulator, with every aspect backed up by real physics and science.
Simulation
Execute intense space battle operations from side, and top view.
Shooter
Slipways
$16.99
Weave isolated planets into a vast trade empire. Enjoy the depth of a space grand strategy game in 60 minutes flat.
Strategy
An epic turn-based space 4X strategy game and spiritual successor to Master of Orion II: Battle at Antares!
Strategy
Hovercars 3077: Undeground® is a high-octane racing game in which armed cars.
Racing
A minimalist city builder where only profits matter.
Strategy
Space Dragons
$6.90
Choose your spaceship and defeat the alien threat that comes from the Moon.
Shooter
Jet-combat roguelite, occasionally with swords and 300+ other items to strap onto your jet.
Action
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