Photo: Terraria

Total Nerd The 20+ Best PC Online Co Op Games on Steam  

Ranker Games
65 votes 8 voters

Looking for good PC online co op games on Steam? Look no further, as we're ranking the best Steam online co op games that you'll definitely find worth your time. The Steam Store can be frustrating to browse, as they often are too gratuitous with their tagging system. To ensure that you find exactly what you're looking for, browse this list of the best online co op PC games on Steam.

In cooperative gameplay or a co op game, it's all about teamwork. In the 2D co op game Terraria, players explore, build, and engage in combat, all within a sandbox. Rec Room is categorized as a virtual social club where you play active games, like paintball or charades, with friends both local and from afar. Cooperative gameplay for the co op game Rec Room takes on the form of cooperative adventures.

Vote up the online co op games on Steam that you would recommend to other gamers, and downvote anything you played but didn't enjoy.

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list ordered by

1
4 2
Rocket League is listed (or ranked) 1 on the list The 20+ Best PC Online Co Op Games on Steam
Rocket League

2
2 1
Don't Starve Together is listed (or ranked) 2 on the list The 20+ Best PC Online Co Op Games on Steam
Don't Starve Together

3
2 1
Borderlands 2 is listed (or ranked) 3 on the list The 20+ Best PC Online Co Op Games on Steam

4
2 2
Trine 2: The Complete Story is listed (or ranked) 4 on the list The 20+ Best PC Online Co Op Games on Steam
Trine 2: The Complete Story

5
2 2
Terraria is listed (or ranked) 5 on the list The 20+ Best PC Online Co Op Games on Steam
2011

6
1 1
Killing Floor is listed (or ranked) 6 on the list The 20+ Best PC Online Co Op Games on Steam
Killing Floor

7
1 1
Sanctum 2 is listed (or ranked) 7 on the list The 20+ Best PC Online Co Op Games on Steam
Sanctum 2

8
1 1
Sonic & All-Stars Racing Trans... is listed (or ranked) 8 on the list The 20+ Best PC Online Co Op Games on Steam

9
1 1
Left 4 Dead 2 is listed (or ranked) 9 on the list The 20+ Best PC Online Co Op Games on Steam

10
1 1
Left 4 Dead is listed (or ranked) 10 on the list The 20+ Best PC Online Co Op Games on Steam

11
1 1
BattleBlock Theater is listed (or ranked) 11 on the list The 20+ Best PC Online Co Op Games on Steam

12
1 1
The Orange Box is listed (or ranked) 12 on the list The 20+ Best PC Online Co Op Games on Steam

13
1 2
Borderlands is listed (or ranked) 13 on the list The 20+ Best PC Online Co Op Games on Steam
Borderlands

14
1 2
Castle Crashers is listed (or ranked) 14 on the list The 20+ Best PC Online Co Op Games on Steam

15
1 2
Garry's Mod is listed (or ranked) 15 on the list The 20+ Best PC Online Co Op Games on Steam

16
1 2
Trine Enchanted Edition is listed (or ranked) 16 on the list The 20+ Best PC Online Co Op Games on Steam
Trine Enchanted Edition

17
0 1
Ibb & Obb is listed (or ranked) 17 on the list The 20+ Best PC Online Co Op Games on Steam
Ibb & Obb

18
0 1
Alien Swarm is listed (or ranked) 18 on the list The 20+ Best PC Online Co Op Games on Steam
Alien Swarm

19
0 1
Torchlight II is listed (or ranked) 19 on the list The 20+ Best PC Online Co Op Games on Steam
Torchlight II

20
0 1
Supreme Commander: Forged Alli... is listed (or ranked) 20 on the list The 20+ Best PC Online Co Op Games on Steam

21
0 1
Portal 2 is listed (or ranked) 21 on the list The 20+ Best PC Online Co Op Games on Steam
2011

22
0 1
Total War: Shogun 2: Fall of t... is listed (or ranked) 22 on the list The 20+ Best PC Online Co Op Games on Steam

23
0 1
Orcs Must Die! 2 is listed (or ranked) 23 on the list The 20+ Best PC Online Co Op Games on Steam
Orcs Must Die! 2 2012

24
0 1
Saints Row: The Third is listed (or ranked) 24 on the list The 20+ Best PC Online Co Op Games on Steam

25
0 1
Rec Room is listed (or ranked) 25 on the list The 20+ Best PC Online Co Op Games on Steam
Rec Room