Latestwith demos with Steam keys tagged Sci-fi (38 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 路 Sell your games with Steam keys on itch.io to have them show up here.
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Make some friends, eat some burgers, and unearth terrible secrets from the depths of space.
Role Playing
螖V: Rings of Saturn
$9.99
Hard sci-fi, top-down space simulator, with every aspect backed up by real physics and science.
Simulation
Program Your Tower Defense!
Strategy
After three apocalyptic events known as the "Catalysts", the remains of humanity fight for control.
Visual Novel
Power of Ten
$11.99
single star fighter trying to save as many civilians as possible before they are overrun by a marauder armada.
Action
A Kinetic Visual Novel about human connection, and the lack thereof.
Visual Novel
In this interactive sci-fi adventure novel, you are the AI pilot of Earth's last interstellar ship.
Interactive Fiction
Five days ago, Janet left her dorm to go on a date. She never returned.
Visual Novel
A retro sci-fi comedy point and click adventure featuring the hapless Captain Disaster.
Adventure
The Stickman made of dark matter and ketchup, from Dark dimension of an alternative universe, is cursed to be tortured
Simulation
</reality>
$11.99
When a VR console feels more "real" than reality itself, Lilya must confront her beliefs about the nature of existence.
Visual Novel
CATYPH is a First Person Adventure game reminscent of Myst. Visit moon Tytaah and solve the challenging puzzles.
Adventure
You have a unique opportunity to study the data regarding an identity change experiment.
Adventure
Play in browser
Aliens Go Home Run
$3.99
You're too good at baseball and aliens are invading. Send them back home with a home run!
Action
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