Free Co-op Campaign Games on Steam
Steam currently has 858 Co-op Campaign games available to download and play. Explore our list of the best free games ranked by popularity and ratings. Data for this list is calculated from reviews and player counts reported directly by Steam and will be updated in real-time. Free Co-op Campaign game rankings were last updated on 12/17/2025.
Looking for more? Explore other lists such as:
- Best co-op campaign games on Steam
- Best co-op campaign Steam Deck games
- Best co-op campaign Steam games for Mac OS
- Best co-op campaign Linux games on Steam
- Free Steam games
- Most played Steam games
- Best rated Steam games
1. Delta Force
Delta Force, a free-to-play 1st-person tactical shooter, returns as the latest in the classic series. With 25 years defining the genre, Delta Force is back with an upgraded arsenal of weaponry, jaw-dropping environments, and a truly dynamic world.
Delta Force holds the #1 spot for "best free Co-op Campaign game on Steam" with a Player Score of 58. Its score was calculated by analyzing a total of 164,600 reviews on Steam. This breaks down to a total of 96,550 positive reviews and 68,050 negative reviews — making it "Mixed" on Steam.
It can be played and ran on Windows systems. At the moment, it is not possible to play or run Delta Force on the Steam Deck.
| Release Date | 12/4/2024 |
| Developers | |
| Publisher | TiMi Studio Group |
| Steam App Id | 2507950 |
2. 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 has achieved a Player Score of 76, placing it in the #2 spot for the best free Co-op Campaign games. Its score was calculated by analyzing a total of 21,963 reviews on Steam. This breaks down to a total of 16,965 positive reviews and 4,998 negative reviews — making it "Mostly Positive" on Steam.
It can be played and ran on Windows systems. At the moment, it is not possible to play or run Dungeon Defenders II on the Steam Deck.
| Release Date | 6/20/2017 |
| Franchise | Chromatic Games |
| Developer | Chromatic Games |
| Publisher | Chromatic Games |
| Steam App Id | 236110 |
3. Infinity Kingdom
Conquer the city, discover the Infinity! Infinity Kingdom is a cartoon-style mmo strategy game. As a resourceful lord, you must defend the land of Norheim against the evil gnomes while protecting yourself from other invading players!
Infinity Kingdom has achieved a Player Score of 55, placing it in the #3 spot for the best free Co-op Campaign games. Its score was calculated by analyzing a total of 952 reviews on Steam. This breaks down to a total of 533 positive reviews and 419 negative reviews — making it "Mixed" on Steam.
It can be played and ran on both Windows and Mac systems. Valve has also verified it as playable on the Steam Deck and will run well.
| Release Date | 7/2/2021 |
| Developer | YOUZU (SINGAPORE) PTE. LTD. |
| Publisher | YOUZU (SINGAPORE) PTE. LTD. |
| Steam App Id | 1573360 |
4. Project Entropy
Welcome, commander, to Project Entropy- an ultimate Sci-Fi and role-playing game with battles in space. In this immersive MMO experience, you will command alien civilizations, conquer uncharted planets, and build Hero fleets.
Project Entropy has achieved a Player Score of 54, placing it in the #4 spot for the best free Co-op Campaign games. Its score was calculated by analyzing a total of 188 reviews on Steam. This breaks down to a total of 104 positive reviews and 84 negative reviews — making it "Mixed" on Steam.
It can be played and ran on Windows systems. At the moment, it is not possible to play or run Project Entropy on the Steam Deck.
| Release Date | 4/17/2024 |
| Developer | FunPlus International AG |
| Publisher | FunPlus International AG |
| Steam App Id | 2806410 |
5. A.V.A Global
A.V.A is a classic FPS shooter game featuring various types game Modes. Depending on the battlefield, you can choose Pointman, Rifleman, and Sniper and enjoy strategic team play.
A.V.A Global has achieved a Player Score of 48, placing it in the #5 spot for the best free Co-op Campaign games. Its score was calculated by analyzing a total of 7,701 reviews on Steam. This breaks down to a total of 3,652 positive reviews and 4,049 negative reviews — making it "Mixed" on Steam.
It can be played and ran on Windows systems. At the moment, it is possible to play A.V.A Global on the Steam Deck (though some functionality may be limited).
6. 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 has achieved a Player Score of 88, placing it in the #6 spot for the best free Co-op Campaign games. Its score was calculated by analyzing a total of 31,185 reviews on Steam. This breaks down to a total of 28,026 positive reviews and 3,159 negative reviews — making it "Very Positive" on Steam.
It can be played and ran on both Windows and Mac systems. At the moment, it is possible to play We Were Here on the Steam Deck (though some functionality may be limited).
| Release Date | 2/3/2017 |
| Franchise | Total Mayhem Games |
| Developer | Total Mayhem Games |
| Publisher | Total Mayhem Games |
| Steam App Id | 582500 |
7. Pixel Puzzles Ultimate Jigsaw Puzzles
The Number 1 Jigsaw Puzzle Game.
Pixel Puzzles Ultimate Jigsaw Puzzles has achieved a Player Score of 73, placing it in the #7 spot for the best free Co-op Campaign games. Its score was calculated by analyzing a total of 2,747 reviews on Steam. This breaks down to a total of 2,084 positive reviews and 663 negative reviews — making it "Mostly Positive" on Steam.
It can be played and ran on Windows systems. At the moment, it is possible to play Pixel Puzzles Ultimate Jigsaw Puzzles on the Steam Deck (though some functionality may be limited).
| Release Date | 8/29/2022 |
| Developer | Pixel Puzzles |
| Publisher | Pixel Puzzles |
| Steam App Id | 351030 |
8. Armored Warfare
Wage war against players from around the world with an unstoppable arsenal of 300+ powerful armored combat vehicles. Compete in PvP tank combat, complete co-op missions, and crush your enemies on breathtaking maps, from scorching deserts to neon-drenched urban jungles.
Armored Warfare has achieved a Player Score of 63, placing it in the #8 spot for the best free Co-op Campaign games. Its score was calculated by analyzing a total of 5,161 reviews on Steam. This breaks down to a total of 3,332 positive reviews and 1,829 negative reviews — making it "Mixed" on Steam.
It can be played and ran on Windows systems. At the moment, it is possible to play Armored Warfare on the Steam Deck (though some functionality may be limited).
| Release Date | 11/17/2017 |
| Franchise | Wishlist Games |
| Developers | |
| Publisher | Wishlist Games |
| Steam App Id | 443110 |
9. Fantasy Grounds VTT
FANTASY GROUNDS is a powerful virtual tabletop that allows your TTRPG group to connect - whether you're around a table or online. With its updated visuals, versatile interface, comprehensive features, and vast library of supported game systems, Fantasy Grounds VTT provides unforgettable experiences!
Fantasy Grounds VTT has achieved a Player Score of 78, placing it in the #9 spot for the best free Co-op Campaign games. Its score was calculated by analyzing a total of 978 reviews on Steam. This breaks down to a total of 800 positive reviews and 178 negative reviews — making it "Very Positive" on Steam.
It can be played and ran on Windows, Mac, and Linux systems. At the moment, it is possible to play Fantasy Grounds VTT on the Steam Deck (though some functionality may be limited).
| Release Date | 11/5/2020 |
| Franchise | Fantasy Grounds by SmiteWorks |
| Developer | SmiteWorks USA, LLC |
| Publisher | SmiteWorks USA, LLC |
| Steam App Id | 1196310 |
10. Unsolved Case
A new lead turns up old doubts about an 'Unsolved Case'. A trap, or a copycat killer? In this co-op puzzle game prequel to the award-winning Cryptic Killer series, put on your detective badges as you collaborate and communicate to crack the codes, solve the riddles, and catch the Cryptic Killer.
Unsolved Case has achieved a Player Score of 85, placing it in the #10 spot for the best free Co-op Campaign games. Its score was calculated by analyzing a total of 6,126 reviews on Steam. This breaks down to a total of 5,384 positive reviews and 742 negative reviews — making it "Very Positive" on Steam.
It can be played and ran on both Windows and Mac systems. At the moment, there is no confirmed information regarding Steam Deck support for this game.
| Release Date | 11/24/2022 |
| Franchise | Eleven Puzzles |
| Developer | Eleven Puzzles |
| Publisher | Eleven Puzzles |
| Steam App Id | 2084050 |
More Free Co-op Campaign Games
Explore even more rankings for the 79 best free Co-op Campaign games available on Steam.
| Image | Name | Actions | ||||
|---|---|---|---|---|---|---|
| 114,333 | 12/4/2024 | 58 | Free | Steam Charts | |
| 360 | 6/20/2017 | 76 | Free | Steam Charts | |
| 289 | 7/2/2021 | 55 | Free | Steam Charts | |
| 179 | 4/17/2024 | 54 | Free | Steam Charts | |
| 166 | 8/24/2022 | 48 | Free | Steam Charts | |
| 104 | 2/3/2017 | 88 | Free | Steam Charts | |
| 96 | 8/29/2022 | 73 | Free | Steam Charts | |
| 82 | 11/17/2017 | 63 | Free | Steam Charts | |
| 62 | 11/5/2020 | 78 | Free | Steam Charts | |
| 46 | 11/24/2022 | 85 | Free | Steam Charts | |
 | 39 | 8/28/2020 | 83 | Free | Steam Charts | |
 | 31 | 9/30/2022 | 82 | Free | Steam Charts | |
 | 24 | 8/2/2025 | 79 | Free | Steam Charts | |
 | 15 | 5/12/2020 | 88 | Free | Steam Charts | |
 | 14 | 6/12/2020 | 84 | Free | Steam Charts | |
 | 11 | 9/24/2025 | 59 | Free | Steam Charts | |
 | 9 | 2/12/2023 | 79 | Free | Steam Charts | |
 | 7 | 8/18/2015 | 90 | Free | Steam Charts | |
 | 6 | 8/7/2023 | 90 | Free | Steam Charts | |
 | 5 | 9/15/2023 | 77 | Free | Steam Charts |
Soures & References
Steambase has best-in-class data powered directly by Steam, our data partners, and in-house experts. Player counts and rankings are enriched, analyzed, and updated in real-time to ensure we surface the most up-to-date insights. Learn more about the Steambase approach to data collection and our review methodology.
- Valve Corporation. (2025, December 17). Steam Store. Steam Store.
- Valve Corporation. (2025, December 17). Delta Force on Steam. Steam Store.
- Valve Corporation. (2025, December 16). Dungeon Defenders II on Steam. Steam Store.
- Valve Corporation. (2025, December 16). Infinity Kingdom on Steam. Steam Store.
- Valve Corporation. (2025, December 6). Project Entropy on Steam. Steam Store.
- Valve Corporation. (2025, November 20). A.V.A Global on Steam. Steam Store.
- Valve Corporation. (2025, November 28). We Were Here on Steam. Steam Store.
- Valve Corporation. (2025, December 14). Pixel Puzzles Ultimate Jigsaw Puzzles on Steam. Steam Store.
- Valve Corporation. (2025, December 11). Armored Warfare on Steam. Steam Store.
- Valve Corporation. (2025, December 9). Fantasy Grounds VTT on Steam. Steam Store.
- Valve Corporation. (2025, November 26). Unsolved Case on Steam. Steam Store.