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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 Assembled from live indielist data on 2026-06-06. Rankings update as data changes.

indielist tracks 20 space sim indie games on Steam, holding 836,289 reviews at an average of 86% 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 307,436 reviews. Figures are tracked by indielist; sales numbers are modeled estimates that each expand into their full formula.

The ranking

  1. No Man's Sky · 307,436 reviews · 85% positive · 2016
  2. Oxygen Not Included · 132,230 reviews · 97% positive · 2019
  3. Kerbal Space Program · 116,084 reviews · 95% positive · 2015
  4. Dyson Sphere Program · 82,685 reviews · 97% positive · 2021
  5. FTL: Faster Than Light · 62,078 reviews · 95% positive · 2012
  6. Kerbal Space Program 2 · 27,701 reviews · 26% positive · 2023
  7. Universe Sandbox · 27,041 reviews · 96% positive · 2015
  8. SpaceEngine · 15,694 reviews · 96% positive · 2019
  9. Cosmoteer: Starship Architect & Commander · 12,626 reviews · 94% positive · 2022
  10. Space Haven · 10,638 reviews · 86% positive · 2026
  11. Deliver Us The Moon · 9,353 reviews · 88% positive · 2019
  12. Spaceflight Simulator · 9,144 reviews · 97% positive · 2022
  13. Void Crew · 8,293 reviews · 87% positive · 2024
  14. Starcom: Unknown Space · 4,322 reviews · 93% positive · 2024
  15. Juno: New Origins · 3,447 reviews · 89% positive · 2023
  16. Between the Stars · 2,446 reviews · 74% positive · 2024
  17. The Last Starship · 1,523 reviews · 75% positive · 2026
  18. Starship EVO · 1,451 reviews · 84% positive · 2020
  19. Fractal Block World · 1,344 reviews · 98% positive · 2021
  20. Kerbal Space Program: Making History Expansion · 753 reviews · 68% positive · 2018

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 modeled estimates, not official sales data.

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