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 July 16th 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 58,274 peak concurrent players over the last day.
7.9
630,223
166,993
58,274
players
2. 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 56,114 reviews of which 52,354 were positive and 3,760 were negative resulting in an impressive rating of 9.2 out of 10. While seeing 53,196 players online at once in the last 24 hours, this game is currently ranked #2 among online co-op games based on player count.
9.2
52,354
3,760
53,196
players
3. 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 35,659 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
330,349
99,903
35,659
players
4. 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. With 35,277 concurrent players in the last 24 hours, the game currently holds the #4 spot among the most played online co-op games.
7.6
775,883
241,752
35,277
players
5. 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 26,657 concurrent players in the last 24 hours, the game currently holds the #5 spot among the most played online co-op games.
9.5
179,154
6,488
26,657
players
6. 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 26,254 concurrent players in the last 24 hours, the game currently holds the #6 spot among the most played online co-op games.
7.4
48,901
16,771
26,254
players
7. 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 15,924 concurrent players in the last 24 hours, the game currently holds the #7 spot among the most played online co-op games.
9.5
736,611
32,168
15,924
players
8. 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 13,946 concurrent players in the last 24 hours, the game currently holds the #8 spot among the most played online co-op games.
9.4
471,451
28,377
13,946
players
9. 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 13,178 concurrent players in the last 24 hours, the game currently holds the #9 spot among the most played online co-op games.
9.6
344,269
9,691
13,178
players
10. Among Us
An online and local party game of teamwork and betrayal for 4-15 players...in space! Among Us is a game developed and published by . Released on November 16th 2018 has received 700,785 reviews of which 643,681 were positive and 57,104 were negative resulting in an impressive rating of 9.1 out of 10. With 6,401 concurrent players in the last 24 hours, the game currently holds the #10 spot among the most played online co-op games.
9.1
643,681
57,104
6,401
players