Best Online Co-Op Games on Steam

The best online co-op games on Steam to play with friends over the internet, ranked by player reviews with live player counts.

A list by Chronos · 50 games · updated Nov 7, 2026 · Report

Prices: 🇺🇸 United States (chosen by the list’s maker)

1
Left 4 Dead 2$9.9929,837 playing97% positivemin. 13 GB
2
Bloons TD 6$13.999,573 playing97% positivemin. 2 GB
3
Lethal Company$9.994,714 playing96% positivemin. 4 GB
4
R.E.P.O.$6.49−35%42,669 playing96% positivemin. 1 GB
5
Phasmophobia$19.9912,060 playing94% positivemin. 21 GB
6
Dying Light$2.49−90%6,797 playing95% positivemin. 40 GB
7
Palworld$29.9926,787 playing94% positivemin. 40 GB
8
Don't Starve Together$14.9915,000 playing94% positivemin. 3 GB
9
It Takes Two$39.992,936 playing95% positivemin. 50 GB
10
Split Fiction$49.992,187 playing97% positivemin. 85 GB
11
PEAK$4.95−38%18,748 playing94% positivemin. 16 GB
12
Valheim$29.9962,183 playing93% positivemin. 1 GB
13
Castle Crashers®$14.99700 playing96% positivemin. 512 MB
14
Among Us$4.999,355 playing92% positive
15
WEBFISHING$4.99246 playing97% positivemin. 4 GB
16
BattleBlock Theater®$14.99109 playing97% positivemin. 2 GB
17
Raft$19.995,508 playing93% positivemin. 10 GB
18
The Planet Crafter$23.994,070 playing96% positivemin. 4 GB
19
Risk of Rain 2$24.9912,577 playing93% positivemin. 4 GB
20
Left 4 Dead$9.99603 playing96% positivemin. 7.5 GB
21
PowerWash Simulator$24.991,008 playing96% positivemin. 6 GB
22
How to Fish$7.995,745 playing95% positivemin. 1 GB
23
Supermarket TogetherFree5,400 playing94% positivemin. 7 GB
24
Bopl Battle$9.99535 playing97% positivemin. 2 GB
25
Saints Row: The Third$9.99188 playing95% positivemin. 10 GB
26
Abiotic Factor$34.993,636 playing95% positivemin. 10 GB
27
Killing Floor$19.99298 playing95% positivemin. 2 GB
28
Gunfire Reborn$19.99687 playing93% positivemin. 4 GB
29
Far Far West$19.992,921 playing95% positivemin. 10 GB
30
Forza Horizon 4—884 playing90% positivemin. 80 GB
31
PAYDAY 2$9.9911,495 playing89% positivemin. 32 GB
32
SCP: Secret LaboratoryFree2,881 playing90% positivemin. 8 GB
33
Content Warning$7.99889 playing92% positivemin. 4 GB
34
Roboquest$16.99−32%246 playing95% positivemin. 6 GB
35
Rocket League®—27,331 playing88% positivemin. 20 GB
36
WarframeFree57,543 playing87% positivemin. 75 GB
37
Call of Duty®: Modern Warfare® 2 (2009)$19.99464 playing93% positivemin. 12 GB
38
FlyKnight Enhanced Edition$5.9936 playing96% positive
39
Trine 2: Complete Story$19.9947 playing95% positivemin. 4.5 GB
40
Sea of Thieves: 2026 Edition$39.993,767 playing88% positivemin. 100 GB
41
Sven Co-opFree297 playing93% positivemin. 2 GB
42
Alien SwarmFree25 playing94% positivemin. 2.5 GB
43
ShellShock Live$9.99307 playing93% positivemin. 500 MB
44
PlateUp!$12.43−27%1,753 playing94% positivemin. 2 GB
45
Escape Simulator$9.99−50%502 playing94% positivemin. 18 GB
46
Starbound$5.99−60%741 playing90% positivemin. 3 GB
47
Echo Point Nova$24.9916 playing96% positivemin. 4 GB
48
Rec Room—291 playing90% positivemin. 6 GB
49
Trailmakers$7.49−70%2,178 playing92% positivemin. 8 GB
50
Torchlight II$3.99−80%342 playing92% positivemin. 1.7 GB