Free Online Co-Op Games on Steam
Steam currently has 5,093 Online 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 Online Co-Op game rankings were last updated on 5/3/2024.
Looking for more? Explore other lists such as:
- Best online co-op games on Steam
- Best online co-op Steam Deck games
- Best online co-op Steam games for Mac OS
- Best online 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 Online Co-Op game on Steam" with a Player Score of 87. Its score was calculated by analyzing a total of 8,034,822 reviews on Steam. This breaks down to a total of 7,009,046 positive reviews and 1,025,776 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).
| Release Date | 8/21/2012 |
| Developers | |
| Publisher | Valve |
| Steam App Id | 730 |
2. 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 #2 spot for the best free Online Co-Op games. Its score was calculated by analyzing a total of 2,228,869 reviews on Steam. This breaks down to a total of 1,825,218 positive reviews and 403,651 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).
3. PUBG: BATTLEGROUNDS
Play PUBG: BATTLEGROUNDS for free. Land on strategic locations, loot weapons and supplies, and survive to become the last team standing across various, diverse Battlegrounds. Squad up and join the Battlegrounds for the original Battle Royale experience that only PUBG: BATTLEGROUNDS can offer.
PUBG: BATTLEGROUNDS has achieved a Player Score of 58, placing it in the #3 spot for the best free Online Co-Op games. Its score was calculated by analyzing a total of 2,352,741 reviews on Steam. This breaks down to a total of 1,373,316 positive reviews and 979,425 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 |
| Developer | KRAFTON, Inc. |
| Publisher | KRAFTON, Inc. |
| Steam App Id | 578080 |
4. 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 93, placing it in the #4 spot for the best free Online Co-Op games. Its score was calculated by analyzing a total of 1,042,496 reviews on Steam. This breaks down to a total of 977,907 positive reviews and 64,589 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 Team Fortress 2 on the Steam Deck (though some functionality may be limited).
5. 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 86, placing it in the #5 spot for the best free Online Co-Op games. Its score was calculated by analyzing a total of 574,118 reviews on Steam. This breaks down to a total of 500,519 positive reviews and 73,599 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 |
6. Path of Exile
You are an Exile, struggling to survive on the dark continent of Wraeclast, as you fight to earn power that will allow you to exact your revenge against those who wronged you. Path of Exile is an online Action RPG set in a dark fantasy world. The game is completely free and will never be pay-to-win.
Path of Exile has achieved a Player Score of 88, placing it in the #6 spot for the best free Online Co-Op games. Its score was calculated by analyzing a total of 220,178 reviews on Steam. This breaks down to a total of 195,936 positive reviews and 24,242 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 Path of Exile on the Steam Deck (though some functionality may be limited).
| Release Date | 10/23/2013 |
| Developer | Grinding Gear Games |
| Publisher | Grinding Gear Games |
| Steam App Id | 238960 |
7. 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 #7 spot for the best free Online Co-Op games. Its score was calculated by analyzing a total of 246,398 reviews on Steam. This breaks down to a total of 239,154 positive reviews and 7,244 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).
8. World of Tanks Blitz
Tanks, not war: jump into a free-to-play MMO action shooter with over 400 tanks. Enjoy stunning graphics and intuitive touch controls. Engage in 7vs7 battles, strategize with your team to conquer diverse maps. Customize tanks, unlock upgrades, and dive into adrenaline-pumping action on mobile and PC
World of Tanks Blitz has achieved a Player Score of 79, placing it in the #8 spot for the best free Online Co-Op games. Its score was calculated by analyzing a total of 139,275 reviews on Steam. This breaks down to a total of 111,004 positive reviews and 28,271 negative reviews — making it "Mostly Positive" on Steam.
It can be played and ran on both Windows and Mac systems. At the moment, it is possible to play World of Tanks Blitz on the Steam Deck (though some functionality may be limited).
| Release Date | 11/9/2016 |
| Franchise | Wargaming Group Ltd. |
| Developer | Wargaming Group Limited |
| Publisher | Wargaming Group Limited |
| Steam App Id | 444200 |
9. THE FINALS
Join THE FINALS, the world-famous, free-to-play, combat-centered game show! Fight alongside your teammates in virtual arenas that you can alter, exploit, and even destroy. Build your own playstyle in this first-person shooter to win escalating tournaments and lasting fame.
THE FINALS has achieved a Player Score of 74, placing it in the #9 spot for the best free Online Co-Op games. Its score was calculated by analyzing a total of 160,591 reviews on Steam. This breaks down to a total of 120,693 positive reviews and 39,898 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 THE FINALS on the Steam Deck.
| Release Date | 12/8/2023 |
| Developer | Embark Studios |
| Publisher | Embark Studios |
| Steam App Id | 2073850 |
10. Brawlhalla
An epic platform fighter for up to 8 players online or local. Try casual free-for-alls, ranked matches, or invite friends to a private room. And it's free! Play cross-platform with millions of players on PlayStation, Xbox, Nintendo Switch, iOS, Android & Steam! Frequent updates. Over fifty Legends.
Brawlhalla has achieved a Player Score of 82, placing it in the #10 spot for the best free Online Co-Op games. Its score was calculated by analyzing a total of 362,220 reviews on Steam. This breaks down to a total of 298,689 positive reviews and 63,531 negative reviews — making it "Very Positive" 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 | 10/17/2017 |
| Developer | Blue Mammoth Games |
| Publisher | Ubisoft |
| Steam App Id | 291550 |
More Free Online Co-Op Games
Explore even more rankings for the 100 best free Online Co-Op games available on Steam.
| Image | Name | Actions | ||||
|---|---|---|---|---|---|---|
 | 1,031,293 | 8/21/2012 | 87 | Free | Steam Charts | |
 | 683,409 | 7/9/2013 | 81 | Free | Steam Charts | |
 | 260,898 | 12/21/2017 | 58 | Free | Steam Charts | |
 | 69,123 | 10/10/2007 | 93 | Free | Steam Charts | |
 | 50,835 | 3/25/2013 | 86 | Free | Steam Charts | |
 | 31,656 | 10/23/2013 | 88 | Free | Steam Charts | |
 | 24,764 | 5/16/2020 | 96 | Free | Steam Charts | |
 | 15,163 | 11/9/2016 | 79 | Free | Steam Charts | |
 | 14,429 | 12/8/2023 | 74 | Free | Steam Charts | |
 | 13,230 | 10/17/2017 | 82 | Free | Steam Charts | |
 | 9,389 | 9/30/2021 | 43 | Free | Steam Charts | |
 | 7,932 | 3/25/2024 | 72 | Free | Steam Charts | |
 | 7,630 | 10/3/2021 | 86 | Free | Steam Charts | |
 | 6,019 | 11/15/2017 | 77 | Free | Steam Charts | |
 | 5,924 | 12/29/2017 | 91 | Free | Steam Charts | |
 | 5,339 | 7/27/2017 | 75 | Free | Steam Charts | |
 | 5,337 | 5/8/2018 | 84 | Free | Steam Charts | |
 | 4,832 | 10/7/2021 | 84 | Free | Steam Charts | |
 | 4,513 | 10/15/2020 | 83 | Free | Steam Charts | |
 | 4,267 | 4/10/2024 | 81 | 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. (2024, May 3). Steam Store. Steam Store.
- Valve Corporation. (2024, May 3). Counter-Strike 2 on Steam. Steam Store.
- Valve Corporation. (2024, May 6). Dota 2 on Steam. Steam Store.
- Valve Corporation. (2024, April 30). PUBG: BATTLEGROUNDS on Steam. Steam Store.
- Valve Corporation. (2024, April 22). Team Fortress 2 on Steam. Steam Store.
- Valve Corporation. (2024, May 3). Warframe on Steam. Steam Store.
- Valve Corporation. (2024, May 4). Path of Exile on Steam. Steam Store.
- Valve Corporation. (2024, May 6). tModLoader on Steam. Steam Store.
- Valve Corporation. (2024, May 6). World of Tanks Blitz on Steam. Steam Store.
- Valve Corporation. (2024, May 5). THE FINALS on Steam. Steam Store.
- Valve Corporation. (2024, May 7). Brawlhalla on Steam. Steam Store.