Best Co-op Games on Steam
Steam currently has 9,705 Co-op games available to download and play. Explore our list of the best picks ranked by Player Score. Our Player Score rankings are calculated directly from reviews left on the Steam store and will be updated in real-time as more players leave their feedback. Co-op game rankings were last updated on 10/3/2025.
Looking for more? Explore other lists such as:
- Free co-op games on Steam
- Best co-op Steam Deck games
- Best co-op Linux games on Steam
- Best co-op Steam games for Mac OS
- Free Steam games
- Most played Steam games
- Best rated Steam games
1. Portal 2
The "Perpetual Testing Initiative" has been expanded to allow you to design co-op puzzles for you and your friends!
Portal 2 holds the #1 spot for "best Co-op game on Steam" with a Player Score of 98. Its score was calculated by analyzing a total of 442,729 reviews on Steam. This breaks down to a total of 436,947 positive reviews and 5,782 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $1.99 to play and can be played and ran on both Windows and Linux systems. Valve has also verified it as playable on the Steam Deck and will run well.
2. Schedule I
From small-time dope pusher to kingpin - manufacture and distribute a range of drugs throughout the grungy city of Hyland Point. Expand your empire with properties, businesses, employees and more.
Schedule I has achieved a Player Score of 97, placing it in the #2 spot for the best Co-op games. Its score was calculated by analyzing a total of 238,534 reviews on Steam. This breaks down to a total of 233,818 positive reviews and 4,716 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $13.99 to play and can be played and ran on Windows systems. At the moment, it is possible to play Schedule I on the Steam Deck (though some functionality may be limited).
3. Left 4 Dead 2
Set in the zombie apocalypse, Left 4 Dead 2 (L4D2) is the highly anticipated sequel to the award-winning Left 4 Dead, the #1 co-op game of 2008. This co-operative action horror FPS takes you and your friends through the cities, swamps and cemeteries of the Deep South, from Savannah to New Orleans across five expansive campaigns.
Left 4 Dead 2 has achieved a Player Score of 97, placing it in the #3 spot for the best Co-op games. Its score was calculated by analyzing a total of 988,896 reviews on Steam. This breaks down to a total of 964,498 positive reviews and 24,398 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $1.99 to play and can be played and ran on both Windows and Linux systems. Valve has also verified it as playable on the Steam Deck and will run well.
4. Terraria
Dig, fight, explore, build! Nothing is impossible in this action-packed adventure game. Four Pack also available!
Terraria has achieved a Player Score of 97, placing it in the #4 spot for the best Co-op games. Its score was calculated by analyzing a total of 1,440,700 reviews on Steam. This breaks down to a total of 1,403,942 positive reviews and 36,758 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $4.99 to play and can be played and ran on Windows, Mac, and Linux systems. Valve has also verified it as playable on the Steam Deck and will run well.
5. The Binding of Isaac: Rebirth
The Binding of Isaac: Rebirth is a randomly generated action RPG shooter with heavy Rogue-like elements. Following Isaac on his journey players will find bizarre treasures that change Isaac’s form giving him super human abilities and enabling him to fight off droves of mysterious creatures, discover secrets and fight his way to safety.
The Binding of Isaac: Rebirth has achieved a Player Score of 96, placing it in the #5 spot for the best Co-op games. Its score was calculated by analyzing a total of 356,842 reviews on Steam. This breaks down to a total of 346,990 positive reviews and 9,852 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $11.24 to play and can be played and ran on Windows, Mac, and Linux systems. Valve has also verified it as playable on the Steam Deck and will run well.
| Steam Price | $11.24 |
| Release Date | 11/4/2014 |
| Developers | |
| Publisher | Nicalis, Inc. |
| Steam App Id | 250900 |
6. Factorio
Factorio is a game about building and creating automated factories to produce items of increasing complexity, within an infinite 2D world. Use your imagination to design your factory, combine simple elements into ingenious structures, and finally protect it from the creatures who don't really like you.
Factorio has achieved a Player Score of 96, placing it in the #6 spot for the best Co-op games. Its score was calculated by analyzing a total of 216,303 reviews on Steam. This breaks down to a total of 210,692 positive reviews and 5,611 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $35.00 to play and can be played and ran on Windows, Mac, and Linux systems. Valve has also verified it as playable on the Steam Deck and will run well.
| Steam Price | $35.00 |
| Release Date | 8/14/2020 |
| Developer | Wube Software LTD. |
| Publisher | Wube Software LTD. |
| Steam App Id | 427520 |
7. Bloons TD 6
The Bloons are back and better than ever! Get ready for a massive 3D tower defense game designed to give you hours and hours of the best strategy gaming available.
Bloons TD 6 has achieved a Player Score of 96, placing it in the #7 spot for the best Co-op games. Its score was calculated by analyzing a total of 364,722 reviews on Steam. This breaks down to a total of 354,587 positive reviews and 10,135 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $4.19 to play and can be played and ran on both Windows and Mac systems. At the moment, it is possible to play Bloons TD 6 on the Steam Deck (though some functionality may be limited).
| Steam Price | $4.19 |
| Release Date | 12/18/2018 |
| Franchise | Ninja Kiwi Games |
| Developer | Ninja Kiwi |
| Publisher | Ninja Kiwi |
| Steam App Id | 960090 |
8. Deep Rock Galactic
Deep Rock Galactic is a 1-4 player co-op FPS featuring badass space Dwarves, 100% destructible environments, procedurally-generated caves, and endless hordes of alien monsters.
Deep Rock Galactic has achieved a Player Score of 96, placing it in the #8 spot for the best Co-op games. Its score was calculated by analyzing a total of 353,334 reviews on Steam. This breaks down to a total of 343,535 positive reviews and 9,799 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $9.89 to play and can be played and ran on Windows systems. At the moment, it is possible to play Deep Rock Galactic on the Steam Deck (though some functionality may be limited).
| Steam Price | $9.89 |
| Release Date | 5/13/2020 |
| Franchise | Coffee Stain |
| Developer | Ghost Ship Games |
| Publisher | Coffee Stain Publishing |
| Steam App Id | 548430 |
9. Lethal Company
A co-op horror about scavenging at abandoned moons to sell scrap to the Company.
Lethal Company has achieved a Player Score of 96, placing it in the #9 spot for the best Co-op games. Its score was calculated by analyzing a total of 494,052 reviews on Steam. This breaks down to a total of 479,826 positive reviews and 14,226 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $7.49 to play and can be played and ran on Windows systems. At the moment, it is possible to play Lethal Company on the Steam Deck (though some functionality may be limited).
10. Garry's Mod
Garry's Mod is a physics sandbox. There aren't any predefined aims or goals. We give you the tools and leave you to play.
Garry's Mod has achieved a Player Score of 96, placing it in the #10 spot for the best Co-op games. Its score was calculated by analyzing a total of 1,180,931 reviews on Steam. This breaks down to a total of 1,143,237 positive reviews and 37,694 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $4.99 to play and can be played and ran on Windows, Mac, and Linux systems. At the moment, it is possible to play Garry's Mod on the Steam Deck (though some functionality may be limited).
| Steam Price | $4.99 |
| Release Date | 11/29/2006 |
| Developer | Facepunch Studios |
| Publisher | Valve |
| Steam App Id | 4000 |
More Co-op Games
Explore even more rankings for the 100 best Co-op games available on Steam.
| Image | Name | Actions | ||||
|---|---|---|---|---|---|---|
| 1,709 | 4/18/2011 | 98 | $1.99 | Steam Charts | |
| 14,082 | 3/24/2025 | 97 | $13.99 | Steam Charts | |
| 38,353 | 11/16/2009 | 97 | $1.99 | Steam Charts | |
| 24,348 | 5/16/2011 | 97 | $4.99 | Steam Charts | |
| 13,794 | 11/4/2014 | 96 | $11.24 | Steam Charts | |
| 13,428 | 8/14/2020 | 96 | $35.00 | Steam Charts | |
| 7,956 | 12/18/2018 | 96 | $4.19 | Steam Charts | |
| 7,374 | 5/13/2020 | 96 | $9.89 | Steam Charts | |
| 5,842 | 10/23/2023 | 96 | $7.49 | Steam Charts | |
| 15,668 | 11/29/2006 | 96 | $4.99 | Steam Charts | |
 | 320 | 10/11/2024 | 96 | $4.99 | Steam Charts | |
 | 23,801 | 5/16/2020 | 96 | Free | Steam Charts | |
 | 13,492 | 9/10/2024 | 96 | $27.99 | Steam Charts | |
 | 172 | 2/26/2021 | 96 | $14.39 | Steam Charts | |
 | 200 | 10/5/2017 | 96 | $29.99 | Steam Charts | |
 | 3,226 | 3/6/2025 | 96 | $44.99 | Steam Charts | |
 | 903 | 4/1/2023 | 96 | $6.99 | Steam Charts | |
 | 1,229 | 5/25/2010 | 96 | $6.99 | Steam Charts | |
 | 146 | 5/15/2014 | 96 | $4.49 | Steam Charts | |
 | 69,112 | 3/5/2025 | 95 | Free | Steam Charts |
Soures & References
Steambase has best-in-class data powered directly by Steam, our data partners, and in-house experts. Reviews 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, October 3). Steam Store. Steam Store.
- Valve Corporation. (2025, October 3). Portal 2 on Steam. Steam Store.
- Valve Corporation. (2025, October 2). Schedule I on Steam. Steam Store.
- Valve Corporation. (2025, September 30). Left 4 Dead 2 on Steam. Steam Store.
- Valve Corporation. (2025, October 3). Terraria on Steam. Steam Store.
- Valve Corporation. (2025, October 3). The Binding of Isaac: Rebirth on Steam. Steam Store.
- Valve Corporation. (2025, October 2). Factorio on Steam. Steam Store.
- Valve Corporation. (2025, October 3). Bloons TD 6 on Steam. Steam Store.
- Valve Corporation. (2025, October 2). Deep Rock Galactic on Steam. Steam Store.
- Valve Corporation. (2025, September 30). Lethal Company on Steam. Steam Store.
- Valve Corporation. (2025, October 3). Garry's Mod on Steam. Steam Store.