Skip to content
indielist (beta)

The best online co-op indie games, ranked by reviews

5 min read for players

online-co-opgenre-guidedata-reportrecommendations

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

indielist tracks 173 online co-op indie games on Steam, holding 9,675,802 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 Terraria with 1,238,172 reviews. Figures are tracked by indielist; sales numbers are estimates that each expand into their full formula.

The ranking

  1. Terraria · 1,238,172 reviews · 97% positive · 2011
  2. Rust · 1,165,850 reviews · 87% positive · 2018
  3. Garry's Mod · 1,091,318 reviews · 97% positive · 2006
  4. Phasmophobia · 683,416 reviews · 94% positive · 2020
  5. Valheim · 458,539 reviews · 94% positive · 2021
  6. Lethal Company · 411,377 reviews · 97% positive · 2023
  7. Palworld · 409,299 reviews · 95% positive · 2026
  8. Don't Starve Together · 375,815 reviews · 95% positive · 2016
  9. Raft · 323,060 reviews · 93% positive · 2022
  10. Risk of Rain 2 · 239,751 reviews · 94% positive · 2020
  11. Stumble Guys · 138,237 reviews · 85% positive · 2021
  12. Escape the Backrooms · 136,373 reviews · 90% positive · 2025
  13. Starbound · 120,672 reviews · 90% positive · 2016
  14. Castle Crashers® · 109,414 reviews · 96% positive · 2012
  15. Scrap Mechanic · 109,201 reviews · 92% positive · 2026
  16. Stick Fight: The Game · 99,931 reviews · 93% positive · 2017
  17. Enshrouded · 93,071 reviews · 86% positive · 2024
  18. MORDHAU · 91,668 reviews · 80% positive · 2019
  19. Warhammer: Vermintide 2 · 90,961 reviews · 85% positive · 2018
  20. Gunfire Reborn · 88,504 reviews · 93% positive · 2021

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.