Best Online Co-Op Games on Steam (for Mac OS)
Steam currently has 8,142 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 11/18/2025.
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 1,452,027 reviews on Steam. This breaks down to a total of 1,414,836 positive reviews and 37,191 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. 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 #2 spot for the best Mac OS Online Co-Op games. Its score was calculated by analyzing a total of 369,146 reviews on Steam. This breaks down to a total of 358,860 positive reviews and 10,286 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $13.99 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 | $13.99 |
| Release Date | 12/18/2018 |
| Franchise | Ninja Kiwi Games |
| Developer | Ninja Kiwi |
| Publisher | Ninja Kiwi |
| Steam App Id | 960090 |
3. 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 #3 spot for the best Mac OS Online Co-Op games. Its score was calculated by analyzing a total of 1,189,610 reviews on Steam. This breaks down to a total of 1,151,665 positive reviews and 37,945 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 |
4. 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 #4 spot for the best Mac OS Online Co-Op games. Its score was calculated by analyzing a total of 335,338 reviews on Steam. This breaks down to a total of 325,591 positive reviews and 9,747 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).
5. 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 #5 spot for the best Mac OS Online Co-Op games. Its score was calculated by analyzing a total of 795,051 reviews on Steam. This breaks down to a total of 769,917 positive reviews and 25,134 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $59.99 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 | $59.99 |
| Release Date | 8/3/2023 |
| Franchise | Larian Studios |
| Developer | Larian Studios |
| Publisher | Larian Studios |
| Steam App Id | 1086940 |
6. 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 #6 spot for the best Mac OS Online Co-Op games. Its score was calculated by analyzing a total of 72,003 reviews on Steam. This breaks down to a total of 69,998 positive reviews and 2,005 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 |
7. 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 #7 spot for the best Mac OS Online Co-Op games. Its score was calculated by analyzing a total of 23,986 reviews on Steam. This breaks down to a total of 23,412 positive reviews and 574 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 |
8. WolfQuest: Anniversary Edition
Live the life of a wild wolf in a realistic ecological simulation set in Yellowstone National Park.
WolfQuest: Anniversary Edition 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 11,438 reviews on Steam. This breaks down to a total of 11,176 positive reviews and 262 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $29.99 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.
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 35,095 reviews on Steam. This breaks down to a total of 33,958 positive reviews and 1,137 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. Tabletop Simulator
Tabletop Simulator is the only simulator where you can let your aggression out by flipping the table! There are no rules to follow: just you, a physics sandbox, and your friends. Make your own online board games or play the thousands of community created mods. Unlimited gaming possibilities!
Tabletop Simulator 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 69,773 reviews on Steam. This breaks down to a total of 67,066 positive reviews and 2,707 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. At the moment, it is not possible to play or run Tabletop Simulator on the Steam Deck.
| Steam Price | $19.99 |
| Release Date | 6/5/2015 |
| Developer | Berserk Games |
| Publisher | Berserk Games |
| Steam App Id | 286160 |
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 | ||||
|---|---|---|---|---|---|---|
| 20,319 | 5/16/2011 | 97 | $9.99 | Steam Charts | |
| 8,639 | 12/18/2018 | 96 | $13.99 | Steam Charts | |
| 21,996 | 11/29/2006 | 96 | $9.99 | Steam Charts | |
| 21,863 | 5/16/2020 | 96 | Free | Steam Charts | |
| 45,558 | 8/3/2023 | 96 | $59.99 | Steam Charts | |
| 57 | 5/15/2014 | 96 | $14.99 | Steam Charts | |
| 42 | 5/31/2018 | 95 | $19.99 | Steam Charts | |
| 390 | 7/22/2025 | 95 | $29.99 | Steam Charts | |
| 214 | 7/27/2021 | 95 | $19.99 | Steam Charts | |
| 5,102 | 6/5/2015 | 95 | $19.99 | 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. (2025, November 18). Steam Store. Steam Store.
- Valve Corporation. (2025, November 18). Terraria on Steam. Steam Store.
- Valve Corporation. (2025, November 19). Bloons TD 6 on Steam. Steam Store.
- Valve Corporation. (2025, November 19). Garry's Mod on Steam. Steam Store.
- Valve Corporation. (2025, November 13). tModLoader on Steam. Steam Store.
- Valve Corporation. (2025, November 11). Baldur's Gate 3 on Steam. Steam Store.
- Valve Corporation. (2025, November 14). BattleBlock Theater® on Steam. Steam Store.
- Valve Corporation. (2025, October 21). Just Shapes & Beats on Steam. Steam Store.
- Valve Corporation. (2025, November 19). WolfQuest: Anniversary Edition on Steam. Steam Store.
- Valve Corporation. (2025, November 18). Clone Drone in the Danger Zone on Steam. Steam Store.
- Valve Corporation. (2025, November 19). Tabletop Simulator on Steam. Steam Store.