Tags
Free Sci-fi Games
Free-to-play sci-fi games on Steam. No upfront cost — check each game page for how it makes its money.
- Games tracked
- 10
- On sale now
- 0
- Average price
- —
- Best discount
- —
Showing 1–10 of 10 games
Dynopunk: Welcome to Synth-City
Last updated 27 Sept 2026
Free
MatchyGotchy
Last updated 27 Sept 2026
Free
Slipstream: Rogue Space
Last updated 28 Sept 2026
Free
Indie, Simulation, Free To Play, Strategy, Massively Multiplayer
Stacks:Space!
Last updated 27 Sept 2026
Free
Lonely Astronaut
Last updated 27 Sept 2026
Free
In Your World (I Own)
Last updated 28 Sept 2026
Free
Action, Adventure, Indie, RPG, Simulation, Free To Play, Casual
Piwall
Last updated 27 Sept 2026
Free
More than words
Last updated 27 Sept 2026
Free
The Crossroads
Last updated 2 Oct 2026
Free
Building Block Cities - Fire Copter Drills
Last updated 28 Sept 2026
Free
Narrow it down
Sci-fi · Free FAQ
How many sci-fi · free games does GeekyAlien track?
GeekyAlien currently tracks 90 sci-fi · free games in the catalog.
How often are prices updated?
Prices and metadata come from the official Steam Web API and are refreshed on a daily schedule; each game page shows when its data was last updated.
How do I narrow down sci-fi · free games?
Use the filters on this page to narrow the list by genre, deals, release decade or features like co-op and controller support.
