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

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

indielist tracks 130 online co-op indie games on Steam, holding 9,286,819 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 1,216,936 reviews. Figures are tracked by indielist; sales numbers are modeled estimates that each expand into their full formula.

The ranking

1. Terraria · 1,216,936 reviews · 97% positive · 2011
2. Rust · 1,140,888 reviews · 87% positive · 2018
3. Garry's Mod · 1,070,685 reviews · 97% positive · 2006
4. Phasmophobia · 676,967 reviews · 95% positive · 2020
5. Valheim · 452,869 reviews · 94% positive · 2021
6. Lethal Company · 409,659 reviews · 97% positive · 2023
7. Don't Starve Together · 367,214 reviews · 95% positive · 2016
8. Palworld · 355,416 reviews · 94% positive · 2024
9. Raft · 318,202 reviews · 93% positive · 2022
10. Risk of Rain 2 · 236,737 reviews · 94% positive · 2020
11. It Takes Two · 212,529 reviews · 95% positive · 2021
12. Starbound · 120,579 reviews · 90% positive · 2016
13. Escape the Backrooms · 117,480 reviews · 90% positive · 2025
14. Scrap Mechanic · 104,934 reviews · 92% positive · 2016
15. Insurgency: Sandstorm · 103,263 reviews · 85% positive · 2018
16. Stick Fight: The Game · 99,581 reviews · 93% positive · 2017
17. Supermarket Together · 92,980 reviews · 94% positive · 2024
18. MORDHAU · 91,628 reviews · 80% positive · 2019
19. Enshrouded · 90,357 reviews · 86% positive · 2024
20. Gunfire Reborn · 87,955 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 modeled estimates, not official sales data.

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