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
- 15
- On sale now
- 0
- Average price
- —
- Best discount
- —
Showing 1–15 of 15 games
Hades' Star
Last updated 27 Sept 2026
Free
Mythgard
Last updated 27 Sept 2026
Free
The Wall
Last updated 27 Sept 2026
Free
Action, Indie, Strategy, Massively Multiplayer, Early Access
Slipstream: Rogue Space
Last updated 28 Sept 2026
Free
Indie, Simulation, Free To Play, Strategy, Massively Multiplayer
Relentless Expanse
Last updated 29 Sept 2026
Free
Nomad Defender
Last updated 28 Sept 2026
Free
Crystal: Automaton
Last updated 30 Sept 2026
Free
Maxix Robotics
Last updated 27 Sept 2026
Free
Steel Symphony
Last updated 28 Sept 2026
Free
SpaceMine
Last updated 27 Sept 2026
Free
Mixing Ammos
Last updated 27 Sept 2026
Free
Space Cheese Defenders
Last updated 28 Sept 2026
Free
XBattleCarsPVP
Last updated 27 Sept 2026
Free
Probability Race
Last updated 27 Sept 2026
Free
Xenoterrestrial
Last updated 27 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.
