Most Played Online Co-Op Games on Steam
Take a look at the top online co-op games that are currently attracting the largest player bases on the Steam platform, as of October 24th 2025. Want to explore even more online co-op titles available on Steam? Explore the complete list of the best online co-op games.
Lists & Categories
1. Dead by Daylight
Trapped forever in a realm of eldritch evil where even death is not an escape, four determined Survivors face a bloodthirsty Killer in a vicious game of nerve and wits. Pick a side and step into a world of tension and terror with horror gaming's best asymmetrical multiplayer. Dead by Daylight is a game developed and published by . Released on June 14th 2016 has received 797,216 reviews of which 630,223 were positive and 166,993 were negative resulting in a rating of 7.9 out of 10. The game has hit the top spot as the #1 most played online co-op game, thanks to its 43,537 peak concurrent players over the last day.
7.9
630,223
166,993
43,537
players
2. DayZ
How long can you survive a post-apocalyptic world? A land overrun with an infected "zombie" population, where you compete with other survivors for limited resources. Will you team up with strangers and stay strong together? Or play as a lone wolf to avoid betrayal? This is DayZ – this is your story. DayZ is a game developed and published by . Released on December 13th 2018 has received 430,252 reviews of which 330,349 were positive and 99,903 were negative resulting in a rating of 7.6 out of 10. While seeing 31,025 players online at once in the last 24 hours, this game is currently ranked #2 among online co-op games based on player count.
7.6
330,349
99,903
31,025
players
3. HELLDIVERS™ 2
The Galaxy’s Last Line of Offence. Enlist in the Helldivers and join the fight for freedom across a hostile galaxy in a fast, frantic, and ferocious third-person shooter. HELLDIVERS™ 2 is a game developed and published by . Released on February 08th 2024 has received 1,017,635 reviews of which 775,883 were positive and 241,752 were negative resulting in a rating of 7.6 out of 10. While seeing 27,191 players online at once in the last 24 hours, this game is currently ranked #3 among online co-op games based on player count.
7.6
775,883
241,752
27,191
players
4. Fellowship
FELLOWSHIP is a multiplayer online dungeon adventure set in an exciting fantasy setting, with endlessly scaling dungeon runs. Fellowship is a game developed and published by . Released on October 16th 2025 has received 8,564 reviews of which 6,308 were positive and 2,256 were negative resulting in a rating of 7.2 out of 10. With 26,198 concurrent players in the last 24 hours, the game currently holds the #4 spot among the most played online co-op games.
7.2
6,308
2,256
26,198
players
5. Valheim
A brutal exploration and survival game for 1-10 players, set in a procedurally-generated purgatory inspired by viking culture. Battle, build, and conquer your way to a saga worthy of Odin’s patronage! Valheim is a game developed and published by . Released on February 02nd 2021 has received 499,828 reviews of which 471,451 were positive and 28,377 were negative resulting in an impressive rating of 9.4 out of 10. With 18,547 concurrent players in the last 24 hours, the game currently holds the #5 spot among the most played online co-op games.
9.4
471,451
28,377
18,547
players
6. Phasmophobia
Phasmophobia is a 4 player online co-op psychological horror. Paranormal activity is on the rise and it’s up to you and your team to use all the ghost-hunting equipment at your disposal in order to gather as much evidence as you can. Phasmophobia is a game developed and published by . Released on September 18th 2020 has received 768,779 reviews of which 736,611 were positive and 32,168 were negative resulting in an impressive rating of 9.5 out of 10. With 13,984 concurrent players in the last 24 hours, the game currently holds the #6 spot among the most played online co-op games.
9.5
736,611
32,168
13,984
players
7. R.E.P.O.
An online co-op horror game with up to 6 players. Locate valuable, fully physics-based objects and handle them with care as you retrieve and extract to satisfy your creator's desires. R.E.P.O. is a game developed and published by . Released on February 26th 2025 has received 185,642 reviews of which 179,154 were positive and 6,488 were negative resulting in an impressive rating of 9.5 out of 10. With 11,985 concurrent players in the last 24 hours, the game currently holds the #7 spot among the most played online co-op games.
9.5
179,154
6,488
11,985
players
8. PEAK
PEAK is a co-op climbing game where the slightest mistake can spell your doom. Either solo or as a group of lost nature scouts, your only hope of rescue from a mysterious island is to scale the mountain at its center. Do you have what it takes to reach the PEAK? PEAK is a game developed and published by . Released on June 16th 2025 has received 163,767 reviews of which 153,530 were positive and 10,237 were negative resulting in an impressive rating of 9.3 out of 10. With 10,029 concurrent players in the last 24 hours, the game currently holds the #8 spot among the most played online co-op games.
9.3
153,530
10,237
10,029
players
9. ELDEN RING NIGHTREIGN
ELDEN RING NIGHTREIGN is a standalone adventure within the ELDEN RING universe, crafted to offer players a new gaming experience by reimagining the game’s core design. ELDEN RING NIGHTREIGN is a game developed and published by . Released on May 29th 2025 has received 65,672 reviews of which 48,901 were positive and 16,771 were negative resulting in a rating of 7.4 out of 10. With 9,910 concurrent players in the last 24 hours, the game currently holds the #9 spot among the most played online co-op games.
7.4
48,901
16,771
9,910
players
10. Bloons TD 6
The Bloons are back and better than ever! Get ready for a massive 3D tower defense game designed to give you hours and hours of the best strategy gaming available. Bloons TD 6 is a game developed and published by . Released on December 17th 2018 has received 353,960 reviews of which 344,269 were positive and 9,691 were negative resulting in an impressive rating of 9.6 out of 10. With 9,395 concurrent players in the last 24 hours, the game currently holds the #10 spot among the most played online co-op games.
9.6
344,269
9,691
9,395
players
More Online Co-Op & Related Games
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