Free to Play Co-op Campaign Games on Steam
Check out this fantastic list of free-to-play co-op campaign games you can enjoy on Steam right now, updated on July 31st 2025. Looking for even more free titles? Explore the complete list of the best free to play co-op campaign games.
Lists & Categories
1. 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. The game has hit the top spot as the #1 most played co-op campaign game, thanks to its 441 peak concurrent players over the last day.
7.6
16,882
4,941
441
players
2. United heist
Your crew consists of two elite thieves. A client hires you to steal a mysterious item. One handles intel; the other infiltrates. Choose your roles and master the heist in this asymmetric co-op puzzle game. United heist is a game developed and published by . Released on February 12th 2023 has received 1,799 reviews of which 1,482 were positive and 317 were negative resulting in a rating of 7.9 out of 10. The game currently holds the #2 spot among the most played co-op campaign games.
7.9
1,482
317
23
players
3. Eronoctosis: Put Yourself Together
A 2-Player Networked Horror Co-Op game. Explore the deepest recesses of your mind to put yourself back together. Work together to defend yourself from its denizens. Eronoctosis: Put Yourself Together is a game developed and published by . Released on October 10th 2021 has received 1,832 reviews of which 1,662 were positive and 170 were negative resulting in a rating of 8.7 out of 10. The game currently holds the #3 spot among the most played co-op campaign games.
8.7
1,662
170
1
players
4. With You
With You is a cooperative two-player puzzle-playground. It's a tiny game that hopes to inspire couples to connect, communicate, and collaborate. With You is a game developed and published by . Released on March 07th 2022 has received 2,664 reviews of which 2,370 were positive and 294 were negative resulting in a rating of 8.5 out of 10. The game currently holds the #4 spot among the most played co-op campaign games.
8.5
2,370
294
5. Xanadu Land
Xanadu land is a fast-paced massively multiplayer bullet hell game that brings you to the arcade gameplay. In the nonstop BOSS battle, your death is just the beginning，accumulate experience, acquire equipment, and fight side by side with other players to knockdown all the BOSSes! Xanadu Land is a game developed and published by . Released on January 17th 2024 has received 671 reviews of which 550 were positive and 121 were negative resulting in a rating of 7.8 out of 10. The game currently holds the #5 spot among the most played co-op campaign games.
7.8
550
121
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