Best Free to Play Co-op Games on Steam
Check out this fantastic list of free-to-play co-op games you can enjoy on Steam right now, updated on February 28th 2026. Looking for even more free titles? Explore the complete list of the best free to play co-op games on Steam.
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1. World of Warships
Immerse yourself in thrilling naval battles and assemble an armada of over 600 ships from the first half of the 20th century — from stealthy destroyers to gigantic battleships. Change the look of your ship, choose upgrades to suit your play style, and go into battle with other players! World of Warships is a naval combat, action and co-op game. Released on November 15th 2017 has received 146,552 reviews of which 112,887 were positive and 33,665 were negative resulting in a rating of 7.6 out of 10. The game has hit the top spot as the #1 most played co-op game, thanks to its 23,350 peak concurrent players over the last day.
7.6
112,887
33,665
23,350
players
2. Once Human
Once Human is a multiplayer open-world survival game set in a strange, post-apocalyptic future. Unite with friends to fight monstrous enemies, uncover secret plots, compete for resources, and build your own territory. Once, you were merely human. Now, you have the power to remake the world. Once Human is a survival, multiplayer and open world survival craft game. Released on July 09th 2024 has received 165,503 reviews of which 127,834 were positive and 37,669 were negative resulting in a rating of 7.7 out of 10. While seeing 9,753 players online at once in the last 24 hours, this game is currently ranked #2 among co-op games based on player count.
7.7
127,834
37,669
9,753
players
3. Unturned
You're a survivor in the zombie infested ruins of society, and must work with your friends and forge alliances to remain among the living. Unturned is a survival, zombies and multiplayer game. Released on July 07th 2017 has received 555,368 reviews of which 506,516 were positive and 48,852 were negative resulting in an impressive rating of 9.0 out of 10. While seeing 7,058 players online at once in the last 24 hours, this game is currently ranked #3 among co-op games based on player count.
9.0
506,516
48,852
7,058
players
4. SCP: Secret Laboratory
Deep within a secure underground facility, a sudden containment breach allows many of the secured anomalies to escape from their chambers. Assist the Foundation in re-securing the facility, help the Insurgency in their goal to capture it, or wreak havoc as an SCP in a frantic bid to escape. SCP: Secret Laboratory is a multiplayer, horror and first-person game. Released on December 29th 2017 has received 214,309 reviews of which 195,923 were positive and 18,386 were negative resulting in an impressive rating of 9.0 out of 10. With 2,086 concurrent players in the last 24 hours, the game currently holds the #4 spot among the most played co-op games.
9.0
195,923
18,386
2,086
players
5. One-armed robber
One-armed robber is a chaotic first-person heist game that centers around a uniquely challenging premise. Players take the role of a determined robber equipped with only one arm, tasked with pulling off daring heists on banks, shops, and various establishments. One-armed robber is a multiplayer, heist and co-op game. Released on December 15th 2023 has received 38,728 reviews of which 35,393 were positive and 3,335 were negative resulting in a rating of 9.0 out of 10. With 694 concurrent players in the last 24 hours, the game currently holds the #5 spot among the most played co-op games.
9.0
35,393
3,335
694
players
6. Cry of Fear
Cry of Fear is a psychological single-player and co-op horror game set in a deserted town filled with horrific creatures and nightmarish delusions. You play as a young man desperately searching for answers in the cold Scandinavian night, finding his way through the city as he slowly descends into madness. Cry of Fear is a horror, multiplayer and psychological horror game. Released on April 25th 2013 has received 74,408 reviews of which 65,852 were positive and 8,556 were negative resulting in a rating of 8.7 out of 10. With 358 concurrent players in the last 24 hours, the game currently holds the #6 spot among the most played co-op games.
8.7
65,852
8,556
358
players
7. Caliber
Caliber is a team-based online shooter focused on special forces units from all over the world. More than 70 operators with unique abilities and weapons as well as various game modes and maps are waiting for you. Caliber is a multiplayer, combat and co-op game. Released on April 12th 2023 has received 21,921 reviews of which 16,536 were positive and 5,385 were negative resulting in a rating of 7.4 out of 10. With 233 concurrent players in the last 24 hours, the game currently holds the #7 spot among the most played co-op games.
7.4
16,536
5,385
233
players
8. No More Room in Hell
The chances of you surviving this all out war of society and the undead are slim to none. Already, there are millions of the walking dead shambling about, searching for food to eat. There's no known cure. One bite can possibly end it all for you. However, you aren't alone in this nightmare. No More Room in Hell is a zombies, multiplayer and survival game. Released on October 31st 2013 has received 74,253 reviews of which 66,753 were positive and 7,500 were negative resulting in a rating of 8.9 out of 10. With 225 concurrent players in the last 24 hours, the game currently holds the #8 spot among the most played co-op games.
8.9
66,753
7,500
225
players
9. Sven Co-op
Sven Co-op is a co-operative game originally based around Valve Software's Half-Life. In this game players must work together against computer controlled enemies and solve puzzles as a team. Sven Co-op is a co-op, fps and online co-op game. Released on January 22nd 2016 has received 31,316 reviews of which 29,316 were positive and 2,000 were negative resulting in an impressive rating of 9.2 out of 10. With 207 concurrent players in the last 24 hours, the game currently holds the #9 spot among the most played co-op games.
9.2
29,316
2,000
207
players
10. We Were Here
Lost in a frozen wasteland and split up from your partner inside an abandoned castle, the only possession you have left is a walkie-talkie with a familiar voice on the other end. Can the two of you find your way out in time? We Were Here is a co-op, escape room and puzzle game. Released on February 03rd 2017 has received 29,997 reviews of which 27,014 were positive and 2,983 were negative resulting in a rating of 8.8 out of 10. With 189 concurrent players in the last 24 hours, the game currently holds the #10 spot among the most played co-op games.
8.8
27,014
2,983
189
players
More Co-op & Related Games
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