Free Co-op Games on Steam
Steam currently has 8,854 Co-op 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 game rankings were last updated on 5/15/2025.
Looking for more? Explore other lists such as:
- Best co-op games on Steam
- Best co-op Steam Deck games
- Best co-op Steam games for Mac OS
- Best co-op Linux games on Steam
- Free Steam games
- Most played Steam games
- Best rated Steam games
1. Counter-Strike 2
For over two decades, Counter-Strike has offered an elite competitive experience, one shaped by millions of players from across the globe. And now the next chapter in the CS story is about to begin. This is Counter-Strike 2.
Counter-Strike 2 holds the #1 spot for "best free Co-op game on Steam" with a Player Score of 86. Its score was calculated by analyzing a total of 8,776,668 reviews on Steam. This breaks down to a total of 7,611,871 positive reviews and 1,164,797 negative reviews — making it "Very Positive" on Steam.
It can be played and ran on both Windows and Linux systems. At the moment, it is possible to play Counter-Strike 2 on the Steam Deck (though some functionality may be limited).
2. PUBG: BATTLEGROUNDS
PUBG: BATTLEGROUNDS, the high-stakes winner-take-all shooter that started the Battle Royale craze, is free-to-play! Drop into diverse maps, loot unique weapons and supplies, and survive in an ever-shrinking zone where every turn could be your last.
PUBG: BATTLEGROUNDS has achieved a Player Score of 59, placing it in the #2 spot for the best free Co-op games. Its score was calculated by analyzing a total of 2,548,069 reviews on Steam. This breaks down to a total of 1,513,687 positive reviews and 1,034,382 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 PUBG: BATTLEGROUNDS on the Steam Deck.
| Release Date | 12/21/2017 |
| Franchise | KRAFTON, Inc. |
| Developers | |
| Publisher | KRAFTON, Inc. |
| Steam App Id | 578080 |
3. Dota 2
Every day, millions of players worldwide enter battle as one of over a hundred Dota heroes. And no matter if it's their 10th hour of play or 1,000th, there's always something new to discover. With regular updates that ensure a constant evolution of gameplay, features, and heroes, Dota 2 has taken on a life of its own.
Dota 2 has achieved a Player Score of 81, placing it in the #3 spot for the best free Co-op games. Its score was calculated by analyzing a total of 2,489,731 reviews on Steam. This breaks down to a total of 2,030,342 positive reviews and 459,389 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 Dota 2 on the Steam Deck (though some functionality may be limited).
4. Apex Legends™
Apex Legends is the award-winning, free-to-play Hero Shooter from Respawn Entertainment. Master an ever-growing roster of legendary characters with powerful abilities, and experience strategic squad play and innovative gameplay in the next evolution of Hero Shooter and Battle Royale.
Apex Legends™ has achieved a Player Score of 67, placing it in the #4 spot for the best free Co-op games. Its score was calculated by analyzing a total of 992,049 reviews on Steam. This breaks down to a total of 666,006 positive reviews and 326,043 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 Apex Legends™ on the Steam Deck.
| Release Date | 11/5/2020 |
| Franchise | Apex Legends Official |
| Developers | |
| Publisher | Electronic Arts |
| Steam App Id | 1172470 |
5. 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 has achieved a Player Score of 64, placing it in the #5 spot for the best free Co-op games. Its score was calculated by analyzing a total of 107,717 reviews on Steam. This breaks down to a total of 69,229 positive reviews and 38,488 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 |
6. Marvel Rivals
Marvel Rivals is a Super Hero Team-Based PVP Shooter! Assemble an all-star Marvel squad, devise countless strategies by combining powers to form unique Team-Up skills and fight in destructible, ever-changing battlefields across the continually evolving Marvel universe!
Marvel Rivals has achieved a Player Score of 79, placing it in the #6 spot for the best free Co-op games. Its score was calculated by analyzing a total of 278,985 reviews on Steam. This breaks down to a total of 223,688 positive reviews and 55,297 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 Marvel Rivals on the Steam Deck (though some functionality may be limited).
| Release Date | 12/5/2024 |
| Developer | NetEase Games |
| Publisher | NetEase Games |
| Steam App Id | 2767030 |
7. Warframe
Awaken as an unstoppable warrior and battle alongside your friends in this story-driven free-to-play online action game
Warframe has achieved a Player Score of 87, placing it in the #7 spot for the best free Co-op games. Its score was calculated by analyzing a total of 617,510 reviews on Steam. This breaks down to a total of 540,403 positive reviews and 77,107 negative reviews — making it "Very Positive" on Steam.
It can be played and ran on Windows systems. Valve has also verified it as playable on the Steam Deck and will run well.
| Release Date | 3/25/2013 |
| Developer | Digital Extremes |
| Publisher | Digital Extremes |
| Steam App Id | 230410 |
8. Once Human
Once Human is a multiplayer open-world survival game set in a strange, post-apocalyptic future. Unite with friends to fight monstrous enemies, uncover secret plots, compete for resources, and build your own territory. Once, you were merely human. Now, you have the power to remake the world.
Once Human has achieved a Player Score of 73, placing it in the #8 spot for the best free Co-op games. Its score was calculated by analyzing a total of 128,468 reviews on Steam. This breaks down to a total of 95,124 positive reviews and 33,344 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 Once Human on the Steam Deck.
| Release Date | 7/9/2024 |
| Developer | Starry Studio |
| Publisher | Starry Studio |
| Steam App Id | 2139460 |
9. Team Fortress 2
Nine distinct classes provide a broad range of tactical abilities and personalities. Constantly updated with new game modes, maps, equipment and, most importantly, hats!
Team Fortress 2 has achieved a Player Score of 89, placing it in the #9 spot for the best free Co-op games. Its score was calculated by analyzing a total of 1,156,947 reviews on Steam. This breaks down to a total of 1,038,849 positive reviews and 118,098 negative reviews — making it "Very Positive" on Steam.
It can be played and ran on both Windows and Linux systems. At the moment, it is possible to play Team Fortress 2 on the Steam Deck (though some functionality may be limited).
10. tModLoader
Dig, Fight, and Build your way through the world of player-created mods on Terraria with tModLoader - this DLC makes modding Terraria a reality!
tModLoader has achieved a Player Score of 96, placing it in the #10 spot for the best free Co-op games. Its score was calculated by analyzing a total of 311,259 reviews on Steam. This breaks down to a total of 302,258 positive reviews and 9,001 negative reviews — making it "Overwhelmingly Positive" on Steam.
It can be played and ran on Windows, Mac, and Linux systems. At the moment, it is possible to play tModLoader on the Steam Deck (though some functionality may be limited).
More Free Co-op Games
Explore even more rankings for the 100 best free Co-op games available on Steam.
| Image | Name | Actions | ||||
|---|---|---|---|---|---|---|
| 1,618,265 | 8/21/2012 | 86 | Free | Steam Charts | |
| 746,378 | 12/21/2017 | 59 | Free | Steam Charts | |
| 534,977 | 7/9/2013 | 81 | Free | Steam Charts | |
| 238,919 | 11/5/2020 | 67 | Free | Steam Charts | |
| 145,527 | 12/4/2024 | 64 | Free | Steam Charts | |
| 83,264 | 12/5/2024 | 79 | Free | Steam Charts | |
| 51,483 | 3/25/2013 | 87 | Free | Steam Charts | |
| 46,946 | 7/9/2024 | 73 | Free | Steam Charts | |
| 43,424 | 10/10/2007 | 89 | Free | Steam Charts | |
| 38,057 | 5/16/2020 | 96 | Free | Steam Charts | |
 | 33,170 | 8/10/2023 | 24 | Free | Steam Charts | |
 | 24,595 | 10/1/2019 | 79 | Free | Steam Charts | |
 | 18,905 | 7/7/2017 | 90 | Free | Steam Charts | |
 | 16,473 | 9/30/2021 | 48 | Free | Steam Charts | |
 | 14,575 | 10/3/2021 | 85 | Free | Steam Charts | |
 | 14,378 | 11/15/2017 | 76 | Free | Steam Charts | |
 | 13,385 | 10/17/2017 | 81 | Free | Steam Charts | |
 | 12,935 | 12/8/2023 | 77 | Free | Steam Charts | |
 | 12,190 | 4/28/2025 | 87 | Free | Steam Charts | |
 | 11,098 | 5/16/2018 | 78 | 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, May 15). Steam Store. Steam Store.
- Valve Corporation. (2025, May 15). Counter-Strike 2 on Steam. Steam Store.
- Valve Corporation. (2025, May 14). PUBG: BATTLEGROUNDS on Steam. Steam Store.
- Valve Corporation. (2025, May 15). Dota 2 on Steam. Steam Store.
- Valve Corporation. (2025, May 16). Apex Legends™ on Steam. Steam Store.
- Valve Corporation. (2025, May 16). Delta Force on Steam. Steam Store.
- Valve Corporation. (2025, May 16). Marvel Rivals on Steam. Steam Store.
- Valve Corporation. (2025, May 9). Warframe on Steam. Steam Store.
- Valve Corporation. (2025, May 16). Once Human on Steam. Steam Store.
- Valve Corporation. (2025, May 14). Team Fortress 2 on Steam. Steam Store.
- Valve Corporation. (2025, May 14). tModLoader on Steam. Steam Store.