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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 2026-10-23. Rankings update as data changes.

indielist tracks 27 space sim indie games on Steam, holding 861,561 reviews at an average of 84% 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 · 136,058 reviews · 97% positive · 2019
  3. Kerbal Space Program · 121,715 reviews · 96% positive · 2015
  4. Dyson Sphere Program · 83,815 reviews · 97% positive · 2021
  5. FTL: Faster Than Light · 63,006 reviews · 95% positive · 2012
  6. Universe Sandbox · 28,097 reviews · 96% positive · 2015
  7. Kerbal Space Program 2 · 27,998 reviews · 26% positive · 2023
  8. SpaceEngine · 16,134 reviews · 96% positive · 2019
  9. Space Haven · 10,382 reviews · 86% positive · 2026
  10. EVERSPACE™ · 9,827 reviews · 78% positive · 2017
  11. Planetbase · 9,591 reviews · 80% positive · 2015
  12. Spaceflight Simulator · 9,573 reviews · 97% positive · 2022
  13. Deliver Us The Moon · 7,556 reviews · 88% positive · 2019
  14. Starcom: Unknown Space · 4,490 reviews · 92% positive · 2024
  15. Ostranauts · 3,204 reviews · 77% positive · 2026
  16. Juno: New Origins · 3,104 reviews · 89% positive · 2023
  17. Astrometica · 2,938 reviews · 82% positive · 2024
  18. Astro Colony · 2,430 reviews · 80% positive · 2026
  19. Between the Stars · 1,973 reviews · 74% positive · 2024
  20. House of the Dying Sun · 1,950 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.