Best Online Co-Op Games on Steam (for Mac OS)
Steam currently has 5,138 Online Co-Op games, but not all of them are able to be played on Mac. 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. Online Co-Op game rankings were last updated on 5/16/2024.
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 Linux games on Steam
- Free online co-op games on Steam
- Free Steam games
- Most played Steam games
- Best rated Steam games
1. Terraria
Dig, fight, explore, build! Nothing is impossible in this action-packed adventure game. Four Pack also available!
Terraria holds the #1 spot for "best Mac OS Online Co-Op game on Steam" with a Player Score of 97. Its score was calculated by analyzing a total of 1,284,858 reviews on Steam. This breaks down to a total of 1,254,360 positive reviews and 30,498 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $9.99 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.
2. 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 #2 spot for the best Mac OS Online Co-Op games. Its score was calculated by analyzing a total of 854,299 reviews on Steam. This breaks down to a total of 833,177 positive reviews and 21,122 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $9.99 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.
3. 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 #3 spot for the best Mac OS Online Co-Op games. Its score was calculated by analyzing a total of 307,551 reviews on Steam. This breaks down to a total of 299,433 positive reviews and 8,118 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $4.89 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 | $4.89 |
| Release Date | 12/18/2018 |
| Franchise | Ninja Kiwi Games |
| Developer | Ninja Kiwi |
| Publisher | Ninja Kiwi |
| Steam App Id | 960090 |
4. 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 #4 spot for the best Mac OS Online Co-Op games. Its score was calculated by analyzing a total of 1,067,095 reviews on Steam. This breaks down to a total of 1,032,248 positive reviews and 34,847 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $9.99 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 | $9.99 |
| Release Date | 11/29/2006 |
| Developer | Facepunch Studios |
| Publisher | Valve |
| Steam App Id | 4000 |
5. 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 #5 spot for the best Mac OS Online Co-Op games. Its score was calculated by analyzing a total of 248,604 reviews on Steam. This breaks down to a total of 241,279 positive reviews and 7,325 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is completely free to play and 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).
6. Baldur's Gate 3
Baldur’s Gate 3 is a story-rich, party-based RPG set in the universe of Dungeons & Dragons, where your choices shape a tale of fellowship and betrayal, survival and sacrifice, and the lure of absolute power.
Baldur's Gate 3 has achieved a Player Score of 96, placing it in the #6 spot for the best Mac OS Online Co-Op games. Its score was calculated by analyzing a total of 608,671 reviews on Steam. This breaks down to a total of 589,082 positive reviews and 19,589 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $50.99 to play and 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.
| Steam Price | $50.99 |
| Release Date | 8/3/2023 |
| Developer | Larian Studios |
| Publisher | Larian Studios |
| Steam App Id | 1086940 |
7. BattleBlock Theater®
Welcome to BattleBlock Theater! You’ve got no where to go but up...on stage. Play single player or co-op to free your friends and save Hatty Hattington! Jump, solve and battle your way through a mysterious theater inhabited by highly technological felines.
BattleBlock Theater® has achieved a Player Score of 96, placing it in the #7 spot for the best Mac OS Online Co-Op games. Its score was calculated by analyzing a total of 70,067 reviews on Steam. This breaks down to a total of 68,140 positive reviews and 1,927 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $14.99 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.
| Steam Price | $14.99 |
| Release Date | 5/15/2014 |
| Franchise | The Behemoth |
| Developer | The Behemoth |
| Publisher | The Behemoth |
| Steam App Id | 238460 |
8. Just Shapes & Beats
"Just Shapes & Beats" is a chaotic co-op musical bullet-hell based on three simple things: avoid Shapes, move to the kick-ass Beats, and die, repeatedly.
Just Shapes & Beats has achieved a Player Score of 95, placing it in the #8 spot for the best Mac OS Online Co-Op games. Its score was calculated by analyzing a total of 19,413 reviews on Steam. This breaks down to a total of 18,955 positive reviews and 458 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $19.99 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.
| Steam Price | $19.99 |
| Release Date | 5/31/2018 |
| Developer | Berzerk Studio |
| Publisher | Berzerk Studio |
| Steam App Id | 531510 |
9. Clone Drone in the Danger Zone
Clone Drone in the Danger Zone is a robot voxel slice-em-up where any part of your body can be sliced off. With your mind downloaded into a robot gladiator, you must survive the sinister trials of the arena.
Clone Drone in the Danger Zone has achieved a Player Score of 95, placing it in the #9 spot for the best Mac OS Online Co-Op games. Its score was calculated by analyzing a total of 27,740 reviews on Steam. This breaks down to a total of 26,868 positive reviews and 872 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $19.99 to play and can be played and ran on both Windows and Mac systems. At the moment, it is possible to play Clone Drone in the Danger Zone on the Steam Deck (though some functionality may be limited).
| Steam Price | $19.99 |
| Release Date | 7/27/2021 |
| Developer | Doborog Games |
| Publisher | Doborog Games |
| Steam App Id | 597170 |
10. Left 4 Dead
From Valve (the creators of Counter-Strike, Half-Life and more) comes Left 4 Dead, a co-op action horror game for the PC and Xbox 360 that casts up to four players in an epic struggle for survival against swarming zombie hordes and terrifying mutant monsters.
Left 4 Dead has achieved a Player Score of 95, placing it in the #10 spot for the best Mac OS Online Co-Op games. Its score was calculated by analyzing a total of 55,561 reviews on Steam. This breaks down to a total of 53,520 positive reviews and 2,041 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $9.99 to play and can be played and ran on both Windows and Mac systems. At the moment, it is possible to play Left 4 Dead on the Steam Deck (though some functionality may be limited).
More Online Co-Op Mac Games on Steam
Explore even more rankings for the 10 best Online Co-Op games available on Steam.
| Image | Name | Actions | ||||
|---|---|---|---|---|---|---|
 | 32,223 | 5/16/2011 | 97 | $9.99 | Steam Charts | |
 | 20,846 | 11/16/2009 | 97 | $9.99 | Steam Charts | |
 | 15,746 | 12/18/2018 | 96 | $4.89 | Steam Charts | |
 | 33,689 | 11/29/2006 | 96 | $9.99 | Steam Charts | |
 | 34,417 | 5/16/2020 | 96 | Free | Steam Charts | |
 | 86,822 | 8/3/2023 | 96 | $50.99 | Steam Charts | |
 | 182 | 5/15/2014 | 96 | $14.99 | Steam Charts | |
 | 90 | 5/31/2018 | 95 | $19.99 | Steam Charts | |
 | 302 | 7/27/2021 | 95 | $19.99 | Steam Charts | |
 | 353 | 11/17/2008 | 95 | $9.99 | 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. (2024, May 16). Steam Store. Steam Store.
- Valve Corporation. (2024, May 16). Terraria on Steam. Steam Store.
- Valve Corporation. (2024, May 14). Left 4 Dead 2 on Steam. Steam Store.
- Valve Corporation. (2024, May 19). Bloons TD 6 on Steam. Steam Store.
- Valve Corporation. (2024, May 17). Garry's Mod on Steam. Steam Store.
- Valve Corporation. (2024, May 18). tModLoader on Steam. Steam Store.
- Valve Corporation. (2024, May 17). Baldur's Gate 3 on Steam. Steam Store.
- Valve Corporation. (2024, May 16). BattleBlock Theater® on Steam. Steam Store.
- Valve Corporation. (2024, May 18). Just Shapes & Beats on Steam. Steam Store.
- Valve Corporation. (2024, May 13). Clone Drone in the Danger Zone on Steam. Steam Store.
- Valve Corporation. (2024, May 18). Left 4 Dead on Steam. Steam Store.