Check out this fantastic list of free-to-play co-op campaign games you can enjoy on Steam right now, updated on May 19th 2026. Looking for even more free titles? Explore the complete list of the best free to play co-op campaign games on Steam.
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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 multiplayer, online co-op and co-op campaign game. 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 257 peak concurrent players over the last day.
7.6
16,882
4,941
257
players
2. 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 massively multiplayer, bullet hell and co-op campaign game. Released on August 02nd 2025 has received 976 reviews of which 816 were positive and 160 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
816
160
3
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 horror, co-op and atmospheric game. Released on October 10th 2021 has received 1,883 reviews of which 1,702 were positive and 181 were negative resulting in a rating of 8.6 out of 10. The game currently holds the #3 spot among the most played co-op campaign games.
8.6
1,702
181
2
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 co-op campaign, cute and hand-drawn game. Released on March 07th 2022 has received 2,817 reviews of which 2,509 were positive and 308 were negative resulting in a rating of 8.6 out of 10. The game currently holds the #4 spot among the most played co-op campaign games.
8.6
2,509
308
1
players
5. Handy Dandy
The two adventurers Handy and Dandy have caused a dimensional tear which is now separating them and the entire cave where they have to solve platforming puzzles to reunite again in this 2D co-op game. Handy Dandy is a indie, adventure and co-op game. Released on May 12th 2020 has received 314 reviews of which 304 were positive and 10 were negative resulting in a rating of 8.9 out of 10. The game currently holds the #5 spot among the most played co-op campaign games.
8.9
304
10
6. 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 puzzle, co-op campaign and adventure game. 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 #6 spot among the most played co-op campaign games.
7.9
1,482
317
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