The best aliens indie games, ranked by reviews

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

indielist tracks 19 aliens indie games on Steam, holding 1,112,966 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 Lethal Company with 411,377 reviews. Figures are tracked by indielist; sales numbers are estimates that each expand into their full formula.

The ranking

1. Lethal Company · 411,377 reviews · 97% positive · 2023
2. Subnautica · 379,589 reviews · 97% positive · 2018
3. Black Mesa · 134,638 reviews · 95% positive · 2020
4. Subnautica: Below Zero · 99,295 reviews · 90% positive · 2021
5. Serious Sam 3: BFE · 21,796 reviews · 88% positive · 2011
6. Breathedge · 14,535 reviews · 81% positive · 2021
7. Surgeon Simulator · 13,792 reviews · 82% positive · 2013
8. Natural Selection 2 · 8,632 reviews · 85% positive · 2012
9. Axiom Verge · 5,824 reviews · 90% positive · 2015
10. Silica · 4,457 reviews · 76% positive · 2023
11. Starcom: Unknown Space · 4,449 reviews · 92% positive · 2024
12. Freedom Planet · 3,316 reviews · 95% positive · 2014
13. Star Valor · 3,253 reviews · 88% positive · 2022
14. Gatekeeper · 2,699 reviews · 83% positive · 2025
15. Megaton Rainfall · 2,296 reviews · 72% positive · 2017
16. In Other Waters · 2,088 reviews · 87% positive · 2020
17. Supplice · 528 reviews · 87% positive · 2023
18. Pawn Planet · 280 reviews · 71% positive · 2025
19. Alien Market Simulator · 122 reviews · 85% positive · 2026

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.