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indielist (beta)

The best space sim indie games, ranked by reviews

5 min read for players

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Data report Built from live indielist data on 2026-09-07. Rankings update as data changes.

indielist tracks 27 space sim indie games on Steam, holding 860,051 reviews at an average of 85% positive. This list ranks them by Steam review count, the most reliable public sales proxy, with a white-box sales estimate behind every title. The most reviewed is No Man's Sky with 310,268 reviews. Figures are tracked by indielist; sales numbers are estimates that each expand into their full formula.

The ranking

  1. No Man's Sky · 310,268 reviews · 85% positive · 2016
  2. Oxygen Not Included · 135,173 reviews · 97% positive · 2019
  3. Kerbal Space Program · 120,435 reviews · 96% positive · 2015
  4. Dyson Sphere Program · 83,444 reviews · 97% positive · 2021
  5. FTL: Faster Than Light · 62,676 reviews · 95% positive · 2012
  6. Kerbal Space Program 2 · 27,918 reviews · 26% positive · 2023
  7. Universe Sandbox · 27,771 reviews · 96% positive · 2015
  8. SpaceEngine · 15,759 reviews · 96% positive · 2019
  9. Space Haven · 11,109 reviews · 86% positive · 2026
  10. EVERSPACE™ · 9,799 reviews · 78% positive · 2017
  11. Deliver Us The Moon · 9,567 reviews · 88% positive · 2019
  12. Planetbase · 9,552 reviews · 80% positive · 2015
  13. Spaceflight Simulator · 9,389 reviews · 97% positive · 2022
  14. Starcom: Unknown Space · 4,449 reviews · 92% positive · 2024
  15. Ostranauts · 3,094 reviews · 77% positive · 2026
  16. Juno: New Origins · 3,080 reviews · 89% positive · 2023
  17. Astrometica · 2,906 reviews · 83% positive · 2024
  18. Astro Colony · 2,381 reviews · 81% positive · 2026
  19. Between the Stars · 1,963 reviews · 74% positive · 2024
  20. House of the Dying Sun · 1,938 reviews · 89% positive · 2016

How this list is built

Games are ranked by Steam review count, the most reliable public proxy for sales when actual figures are private. Each title links to its indielist page, where the white-box sales estimate expands into the full Boxleiter formula, so you can audit the number rather than trust a black box. Review counts come from Steam; sales figures are estimates, not official sales data.

Want the underlying estimate for your own game? Try the sales estimator, or browse the full game directory.