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
- 8
- On sale now
- 0
- Average price
- —
- Best discount
- —
Showing 1–8 of 8 games
Stacks:Space!
Last updated 27 Sept 2026
Free
Project Amalthea: Battlegrounds
Last updated 27 Sept 2026
Free
Dark Old Sun
Last updated 27 Sept 2026
Free
Lonely Astronaut
Last updated 27 Sept 2026
Free
Huge Enemy - Worldbreakers
Last updated 27 Sept 2026
Free
Spaceship - Visual Effect Graph Demo
Last updated 27 Sept 2026
Free
Manludo
Last updated 28 Sept 2026
Free
Steel Symphony
Last updated 28 Sept 2026
Free
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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.
