Best Online Co-Op Games on Steam (for Mac OS)
Steam currently has 7,637 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 8/20/2025.
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 1,433,449 reviews on Steam. This breaks down to a total of 1,397,043 positive reviews and 36,406 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 362,473 reviews on Steam. This breaks down to a total of 352,414 positive reviews and 10,059 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 1,175,010 reviews on Steam. This breaks down to a total of 1,137,491 positive reviews and 37,519 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $5.99 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 | $5.99 |
| 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 326,340 reviews on Steam. This breaks down to a total of 316,865 positive reviews and 9,475 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 778,978 reviews on Steam. This breaks down to a total of 754,458 positive reviews and 24,520 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 71,843 reviews on Steam. This breaks down to a total of 69,835 positive reviews and 2,008 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 23,340 reviews on Steam. This breaks down to a total of 22,768 positive reviews and 572 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $11.99 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 | $11.99 |
| 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 10,924 reviews on Steam. This breaks down to a total of 10,678 positive reviews and 246 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 34,179 reviews on Steam. This breaks down to a total of 33,094 positive reviews and 1,085 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 68,669 reviews on Steam. This breaks down to a total of 66,008 positive reviews and 2,661 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 | ||||
|---|---|---|---|---|---|---|
| 22,918 | 5/16/2011 | 97 | $9.99 | Steam Charts | |
| 11,731 | 12/18/2018 | 96 | $13.99 | Steam Charts | |
| 29,143 | 11/29/2006 | 96 | $5.99 | Steam Charts | |
| 23,540 | 5/16/2020 | 96 | Free | Steam Charts | |
| 63,051 | 8/3/2023 | 96 | $59.99 | Steam Charts | |
| 67 | 5/15/2014 | 96 | $14.99 | Steam Charts | |
| 136 | 5/31/2018 | 95 | $11.99 | Steam Charts | |
| 316 | 7/22/2025 | 95 | $29.99 | Steam Charts | |
| 302 | 7/27/2021 | 95 | $19.99 | Steam Charts | |
| 6,890 | 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, August 20). Steam Store. Steam Store.
- Valve Corporation. (2025, August 20). Terraria on Steam. Steam Store.
- Valve Corporation. (2025, August 28). Bloons TD 6 on Steam. Steam Store.
- Valve Corporation. (2025, August 28). Garry's Mod on Steam. Steam Store.
- Valve Corporation. (2025, August 18). tModLoader on Steam. Steam Store.
- Valve Corporation. (2025, August 27). Baldur's Gate 3 on Steam. Steam Store.
- Valve Corporation. (2025, August 27). BattleBlock Theater® on Steam. Steam Store.
- Valve Corporation. (2025, August 24). Just Shapes & Beats on Steam. Steam Store.
- Valve Corporation. (2025, August 25). WolfQuest: Anniversary Edition on Steam. Steam Store.
- Valve Corporation. (2025, August 21). Clone Drone in the Danger Zone on Steam. Steam Store.
- Valve Corporation. (2025, July 13). Tabletop Simulator on Steam. Steam Store.