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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 2026-07-24. Rankings update as data changes.

indielist tracks 27 space sim indie games on Steam, holding 861,767 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 · 142,787 reviews · 97% positive · 2019
  3. Kerbal Space Program · 118,802 reviews · 96% positive · 2015
  4. Dyson Sphere Program · 83,095 reviews · 97% positive · 2021
  5. FTL: Faster Than Light · 62,406 reviews · 95% positive · 2012
  6. Kerbal Space Program 2 · 27,818 reviews · 26% positive · 2023
  7. Universe Sandbox · 27,434 reviews · 96% positive · 2015
  8. SpaceEngine · 15,358 reviews · 96% positive · 2019
  9. Space Haven · 10,128 reviews · 86% positive · 2026
  10. EVERSPACE™ · 9,780 reviews · 78% positive · 2017
  11. Spaceflight Simulator · 9,531 reviews · 97% positive · 2022
  12. Planetbase · 9,494 reviews · 80% positive · 2015
  13. Deliver Us The Moon · 7,426 reviews · 88% positive · 2019
  14. Starcom: Unknown Space · 4,418 reviews · 92% positive · 2024
  15. Juno: New Origins · 3,511 reviews · 89% positive · 2023
  16. Astrometica · 2,864 reviews · 83% positive · 2024
  17. Ostranauts · 2,589 reviews · 81% positive · 2020
  18. Between the Stars · 2,475 reviews · 74% positive · 2024
  19. Astro Colony · 2,348 reviews · 81% positive · 2026
  20. House of the Dying Sun · 1,929 reviews · 90% 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.