Free Co-op Campaign Games on Steam
Steam currently has 764 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 8/29/2025.
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 61. Its score was calculated by analyzing a total of 135,942 reviews on Steam. This breaks down to a total of 82,979 positive reviews and 52,963 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 21,858 reviews on Steam. This breaks down to a total of 16,894 positive reviews and 4,964 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 58, placing it in the #3 spot for the best free Co-op Campaign games. Its score was calculated by analyzing a total of 820 reviews on Steam. This breaks down to a total of 485 positive reviews and 335 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 | 7/1/2021 |
| Developer | YOUZU (SINGAPORE) PTE. LTD. |
| Publisher | YOUZU (SINGAPORE) PTE. LTD. |
| Steam App Id | 1573360 |
4. 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 #4 spot for the best free Co-op Campaign games. Its score was calculated by analyzing a total of 30,547 reviews on Steam. This breaks down to a total of 27,476 positive reviews and 3,071 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 |
5. 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 52, placing it in the #5 spot for the best free Co-op Campaign games. Its score was calculated by analyzing a total of 161 reviews on Steam. This breaks down to a total of 84 positive reviews and 77 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 |
6. 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 64, placing it in the #6 spot for the best free Co-op Campaign games. Its score was calculated by analyzing a total of 5,050 reviews on Steam. This breaks down to a total of 3,285 positive reviews and 1,765 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 |
7. 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 47, placing it in the #7 spot for the best free Co-op Campaign games. Its score was calculated by analyzing a total of 7,650 reviews on Steam. This breaks down to a total of 3,616 positive reviews and 4,034 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).
8. 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 #8 spot for the best free Co-op Campaign games. Its score was calculated by analyzing a total of 2,686 reviews on Steam. This breaks down to a total of 2,025 positive reviews and 661 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 |
9. Escape Memoirs: Mini Stories
"Escape Memoirs: Mini Stories" is a series of co-operative escape-room style puzzle scenarios. Each one is sure to test your wits as you try to overcome the challenges that stand in the way of your escape.
Escape Memoirs: Mini Stories has achieved a Player Score of 82, placing it in the #9 spot for the best free Co-op Campaign games. Its score was calculated by analyzing a total of 5,555 reviews on Steam. This breaks down to a total of 4,687 positive reviews and 868 negative reviews — making it "Very Positive" on Steam.
It can be played and ran on Windows systems. At the moment, it is possible to play Escape Memoirs: Mini Stories on the Steam Deck (though some functionality may be limited).
| Release Date | 9/30/2022 |
| Franchise | 0 Deer Soft |
| Developer | 0 Deer Soft |
| Publishers | |
| Steam App Id | 2098350 |
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 5,911 reviews on Steam. This breaks down to a total of 5,188 positive reviews and 723 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 73 best free Co-op Campaign games available on Steam.
| Image | Name | Actions | ||||
|---|---|---|---|---|---|---|
| 61,351 | 12/4/2024 | 61 | Free | Steam Charts | |
| 368 | 6/20/2017 | 76 | Free | Steam Charts | |
| 324 | 7/1/2021 | 58 | Free | Steam Charts | |
| 263 | 2/3/2017 | 88 | Free | Steam Charts | |
| 240 | 4/17/2024 | 52 | Free | Steam Charts | |
| 136 | 11/17/2017 | 64 | Free | Steam Charts | |
| 115 | 8/23/2022 | 47 | Free | Steam Charts | |
| 79 | 8/29/2022 | 73 | Free | Steam Charts | |
| 79 | 9/30/2022 | 82 | Free | Steam Charts | |
| 63 | 11/24/2022 | 85 | Free | Steam Charts | |
 | 49 | 8/2/2025 | 77 | Free | Steam Charts | |
 | 32 | 8/28/2020 | 82 | Free | Steam Charts | |
 | 25 | 2/12/2023 | 79 | Free | Steam Charts | |
 | 11 | 6/12/2020 | 84 | Free | Steam Charts | |
 | 8 | 7/23/2024 | 71 | Free | Steam Charts | |
 | 6 | 4/19/2024 | 63 | Free | Steam Charts | |
 | 6 | 8/6/2021 | 83 | Free | Steam Charts | |
 | 5 | 5/4/2023 | 53 | Free | Steam Charts | |
 | 5 | 8/7/2023 | 89 | Free | Steam Charts | |
 | 4 | 9/7/2021 | 60 | 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, August 29). Steam Store. Steam Store.
- Valve Corporation. (2025, August 29). Delta Force on Steam. Steam Store.
- Valve Corporation. (2025, August 29). Dungeon Defenders II on Steam. Steam Store.
- Valve Corporation. (2025, August 24). Infinity Kingdom on Steam. Steam Store.
- Valve Corporation. (2025, August 14). We Were Here on Steam. Steam Store.
- Valve Corporation. (2025, August 6). Project Entropy on Steam. Steam Store.
- Valve Corporation. (2025, August 28). Armored Warfare on Steam. Steam Store.
- Valve Corporation. (2025, August 21). A.V.A Global on Steam. Steam Store.
- Valve Corporation. (2025, August 15). Pixel Puzzles Ultimate Jigsaw Puzzles on Steam. Steam Store.
- Valve Corporation. (2025, August 16). Escape Memoirs: Mini Stories on Steam. Steam Store.
- Valve Corporation. (2025, August 29). Unsolved Case on Steam. Steam Store.