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 August 28th 2025. Looking for even more free titles? Explore the complete list of the best free to play co-op games.
Lists & Categories
1. Delta Force
Delta Force is back! The iconic series returns as the definitive free-to-play modern team-based tactical shooter and featuring three distinct gameplay modes: large-scale PvP warfare, intense extraction shooter action, and a remake of the legendary Black Hawk Down campaign. Delta Force is a game developed and published by . Released on December 04th 2024 has received 134,024 reviews of which 81,946 were positive and 52,078 were negative resulting in a rating of 6.1 out of 10. The game has hit the top spot as the #1 most played co-op game, thanks to its 45,249 peak concurrent players over the last day.
6.1
81,946
52,078
45,249
players
2. 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 game developed and published by . 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. While seeing 13,823 players online at once in the last 24 hours, this game is currently ranked #2 among co-op games based on player count.
7.6
112,887
33,665
13,823
players
3. 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 game developed and published by . 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. While seeing 2,949 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
195,923
18,386
2,949
players
4. 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 game developed and published by . 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 698 concurrent players in the last 24 hours, the game currently holds the #4 spot among the most played co-op games.
9.0
35,393
3,335
698
players
5. 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 game developed and published by . Released on April 12th 2023 has received 20,923 reviews of which 15,853 were positive and 5,070 were negative resulting in a rating of 7.5 out of 10. With 278 concurrent players in the last 24 hours, the game currently holds the #5 spot among the most played co-op games.
7.5
15,853
5,070
278
players
6. 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 game developed and published by . 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 247 concurrent players in the last 24 hours, the game currently holds the #6 spot among the most played co-op games.
9.2
29,316
2,000
247
players
7. One-armed cook
One-armed cook is a chaotic co-op cooking game for up to 4 people. Work as a team or cook on your own, set your own pace, and don't let the stress of a full restaurant catch up to you. The goofy physics-based aspect of the game gives this cooking game a new twist. One-armed cook is a game developed and published by . Released on August 30th 2022 has received 29,110 reviews of which 26,749 were positive and 2,361 were negative resulting in an impressive rating of 9 out of 10. With 221 concurrent players in the last 24 hours, the game currently holds the #7 spot among the most played co-op games.
9
26,749
2,361
221
players
8. 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 game developed and published by . 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 134 concurrent players in the last 24 hours, the game currently holds the #8 spot among the most played co-op games.
8.8
27,014
2,983
134
players
9. Alien Swarm: Reactive Drop
Co-operative top-down shooter game available for free. An epic bug hunt featuring a unique blend of co-op play and squad-level tactics. Alien Swarm: Reactive Drop is a game developed and published by . Released on April 20th 2017 has received 22,649 reviews of which 21,500 were positive and 1,149 were negative resulting in an impressive rating of 9.3 out of 10. The game currently holds the #9 spot among the most played co-op games.
9.3
21,500
1,149
70
players
10. Otherworld Legends
A "blood-pumping, face-bashing" roguelike brawler. Master heroes of your choice, craft uniquely broken builds, and hack & pummel through a myriad of dungeons in a thrilling rampage. Otherworld Legends is a game developed and published by . Released on October 30th 2024 has received 1,287 reviews of which 802 were positive and 485 were negative resulting in a rating of 6.1 out of 10. The game currently holds the #10 spot among the most played co-op games.
6.1
802
485
38
players
More Co-op & Related Games
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