Free to Play Online Co-Op Games on Steam
Check out this fantastic list of free-to-play online co-op games you can enjoy on Steam right now, updated on July 16th 2025. Looking for even more free titles? Explore the complete list of the best free to play online co-op games.
Lists & Categories
1. Supermarket Together
The multiplayer supermarket has arrived to your neighbourhood for free! Stock your shop space, unlock perks and franchises, hire employees or chase those pesky shoplifters. The more players, the more action! Supermarket Together is a game developed and published by . Released on August 09th 2024 has received 67,435 reviews of which 63,994 were positive and 3,441 were negative resulting in an impressive rating of 9.3 out of 10. The game has hit the top spot as the #1 most played online co-op game, thanks to its 5,171 peak concurrent players over the last day.
9.3
63,994
3,441
5,171
players
2. Stumble Guys
Ready for the chaos? Stumble Guys is a 32-player, fast-paced multiplayer party royale where players dash, jump, and fall across hilarious obstacle courses in a fun race to be the last one standing. Stumble Guys is a game developed and published by . Released on October 07th 2021 has received 128,011 reviews of which 108,841 were positive and 19,170 were negative resulting in a rating of 8.4 out of 10. While seeing 2,828 players online at once in the last 24 hours, this game is currently ranked #2 among online co-op games based on player count.
8.4
108,841
19,170
2,828
players
3. Goose Goose Duck
Goose Goose Duck is a game of social deduction for up to 16 players. Players are separated into different groups that are each assigned a different objective. Complete your team’s objective to win! Goose Goose Duck is a game developed and published by . Released on October 03rd 2021 has received 73,444 reviews of which 63,663 were positive and 9,781 were negative resulting in a rating of 8.5 out of 10. While seeing 2,028 players online at once in the last 24 hours, this game is currently ranked #3 among online co-op games based on player count.
8.5
63,663
9,781
2,028
players
4. Game of Thrones: Kingsroad
A story-driven action-adventure RPG, bringing the world of Westeros to life with remarkable detail and never-before seen scale. Game of Thrones: Kingsroad is a game developed and published by . Released on May 21st 2025 has received 3,607 reviews of which 2,230 were positive and 1,377 were negative resulting in a rating of 6.1 out of 10. With 1,679 concurrent players in the last 24 hours, the game currently holds the #4 spot among the most played online co-op games.
6.1
2,230
1,377
1,679
players
5. Rec Room
Rec Room is the best place to build and play games together. Party up with friends from all around the world to chat, hang out, explore MILLIONS of player-created rooms, or build something new and amazing to share with us all. Rec Room is a game developed and published by . Released on September 02nd 2021 has received 71,223 reviews of which 63,756 were positive and 7,467 were negative resulting in a rating of 8.8 out of 10. With 1,524 concurrent players in the last 24 hours, the game currently holds the #5 spot among the most played online co-op games.
8.8
63,756
7,467
1,524
players
6. DDNet
Want to play the hardest cooperative 2D platformer ever? Want to finish no map ever? Want to be in pain for hours and cry, getting nothing in return? Come play DDNet with a large community of other sufferers! DDNet is a game developed and published by . Released on August 17th 2020 has received 37,450 reviews of which 33,440 were positive and 4,010 were negative resulting in a rating of 8.8 out of 10. With 1,426 concurrent players in the last 24 hours, the game currently holds the #6 spot among the most played online co-op games.
8.8
33,440
4,010
1,426
players
7. Dungeon Defenders II
Dungeon Defenders II is a cooperative Action Tower Defense game packed with roleplaying elements like loot, leveling, and pets. Dungeon Defenders II is a game developed and published by . Released on June 20th 2017 has received 21,823 reviews of which 16,882 were positive and 4,941 were negative resulting in a rating of 7.6 out of 10. With 475 concurrent players in the last 24 hours, the game currently holds the #7 spot among the most played online co-op games.
7.6
16,882
4,941
475
players
8. 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 280 concurrent players in the last 24 hours, the game currently holds the #8 spot among the most played online co-op games.
9.2
29,316
2,000
280
players
9. Super Sus
Welcome to join the multiplayer social deduction game - Super Sus! Engage in intense gameplay with global players, as you strategize to safeguard your spaceship from the cunning Impostors determined to sabotage the mission and eliminate everyone aboard! Super Sus is a game developed and published by . Released on July 30th 2024 has received 1,389 reviews of which 961 were positive and 428 were negative resulting in a rating of 6.7 out of 10. With 216 concurrent players in the last 24 hours, the game currently holds the #9 spot among the most played online co-op games.
6.7
961
428
216
players
10. BAPBAP
Join BAPBAP, the Roguelike Party game where no two matches are ever the same. Round up your homies, pick a character, and build a giga-unfair build that'll make them hate you - then do it all over again! BAPBAP is a game developed and published by . Released on March 12th 2025 has received 1,856 reviews of which 1,484 were positive and 372 were negative resulting in a rating of 7.7 out of 10. With 211 concurrent players in the last 24 hours, the game currently holds the #10 spot among the most played online co-op games.
7.7
1,484
372
211
players