Best Massively Multiplayer Games on Steam (for Mac OS)
Steam currently has 7,052 Massively Multiplayer 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. Massively Multiplayer game rankings were last updated on 3/27/2026.
Looking for more? Explore other lists such as:
- Best massively multiplayer games on Steam
- Best massively multiplayer Steam Deck games
- Best massively multiplayer Linux games on Steam
- Free massively multiplayer games on Steam
- Free Steam games
- Most played Steam games
- Best rated Steam games
1. 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 holds the #1 spot for "best Mac OS Massively Multiplayer game on Steam" with a Player Score of 96. Its score was calculated by analyzing a total of 1,226,080 reviews on Steam. This breaks down to a total of 1,187,519 positive reviews and 38,561 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 |
2. Bongo Cat
Bongo cat needs your help. Bongo cat needz more hatz!!! Every time you press a key, Bongo cat will punch your taskbar. Type, click, play, work to collect more points. Which hats will you find?
Bongo Cat has achieved a Player Score of 95, placing it in the #2 spot for the best Mac OS Massively Multiplayer games. Its score was calculated by analyzing a total of 95,480 reviews on Steam. This breaks down to a total of 92,268 positive reviews and 3,212 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is completely free to play and can be played and ran on both Windows and Mac systems. At the moment, there is no confirmed information regarding Steam Deck support for this game.
| Release Date | 3/5/2025 |
| Developers | |
| Publisher | Irox Games |
| Steam App Id | 3419430 |
3. Snail Simulator
Have you ever wanted to be a snail? Now you can be! Explore the vast Snearth with snail friends! Join monthly Snail Parties! MMOS (Massive Multiplayer Online Snails)! BECOME a snail (in a simulation)!
Snail Simulator has achieved a Player Score of 93, placing it in the #3 spot for the best Mac OS Massively Multiplayer games. Its score was calculated by analyzing a total of 1,534 reviews on Steam. This breaks down to a total of 1,509 positive reviews and 25 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $2.99 to play and can be played and ran on both Windows and Mac systems. At the moment, it is possible to play Snail Simulator on the Steam Deck (though some functionality may be limited).
| Steam Price | $2.99 |
| Release Date | 11/21/2023 |
| Developers | |
| Publishers | |
| Steam App Id | 1500740 |
4. Kukoro: Stream chat games
Kukoro: Stream chat games is a collection of +20 games, from 2D shooters to tactical RPG mini-games, with a high engage for your Twitch community. You and your audience will be able to play with you in real time receiving the individual relevance they deserve, growing your channel day by day.
Kukoro: Stream chat games has achieved a Player Score of 92, placing it in the #4 spot for the best Mac OS Massively Multiplayer games. Its score was calculated by analyzing a total of 1,015 reviews on Steam. This breaks down to a total of 993 positive reviews and 22 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $4.99 to play and can be played and ran on both Windows and Mac systems. At the moment, there is no confirmed information regarding Steam Deck support for this game.
5. Super Animal Royale
Welcome to the coziest way to kill your friends. Super Animal Royale is a 64-player, top-down 2D battle royale where adorably murderous animals fight tooth, claw, and machine gun. Then, relax in Super Animal World with fishing, hamsterball races, and story quests before the next fight to the death.
Super Animal Royale has achieved a Player Score of 91, placing it in the #5 spot for the best Mac OS Massively Multiplayer games. Its score was calculated by analyzing a total of 43,906 reviews on Steam. This breaks down to a total of 40,893 positive reviews and 3,013 negative reviews — making it "Very Positive" on Steam.
It is completely free to play and can be played and ran on both Windows and Mac systems. At the moment, it is possible to play Super Animal Royale on the Steam Deck (though some functionality may be limited).
| Release Date | 8/26/2021 |
| Franchise | Modus Games |
| Developer | Pixile |
| Publishers | |
| Steam App Id | 843380 |
6. ShellShock Live
Demolish your friends with hundreds of upgradable weapons shot from your customizable tank in this action-packed online multiplayer tanks game. Earn XP to level up and unlock new tanks, weapons, and gear. Fight against or alongside your friends for strategic team or free-for-all matches.
ShellShock Live has achieved a Player Score of 91, placing it in the #6 spot for the best Mac OS Massively Multiplayer games. Its score was calculated by analyzing a total of 35,327 reviews on Steam. This breaks down to a total of 32,886 positive reviews and 2,441 negative reviews — making it "Very 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 ShellShock Live on the Steam Deck (though some functionality may be limited).
| Steam Price | $9.99 |
| Release Date | 5/22/2020 |
| Developer | kChamp Games |
| Publisher | kChamp Games |
| Steam App Id | 326460 |
7. X-Plane 11
The future of flight simulation is now! X-Plane 11 is the detailed, realistic, and modern simulator you’ve been waiting for. Intuitive user interface, 3-D cockpits, new effects, 3-D sound, living airports and world-wide scenery.
X-Plane 11 has achieved a Player Score of 91, placing it in the #7 spot for the best Mac OS Massively Multiplayer games. Its score was calculated by analyzing a total of 19,830 reviews on Steam. This breaks down to a total of 18,433 positive reviews and 1,397 negative reviews — making it "Very Positive" on Steam.
It is priced at $29.99 to play and can be played and ran on Windows, Mac, and Linux systems. At the moment, it is possible to play X-Plane 11 on the Steam Deck (though some functionality may be limited).
| Steam Price | $29.99 |
| Release Date | 3/30/2017 |
| Developer | Laminar Research |
| Publisher | Laminar Research |
| Steam App Id | 269950 |
8. Shakes and Fidget
Shakes & Fidget is a hilarious fantasy role-playing satire and at the same time, an award-winning RPG! Sounds crazy? With over 50 million enthusiastic players, it ranks among the most celebrated online role-playing games worldwide!
Shakes and Fidget has achieved a Player Score of 90, placing it in the #8 spot for the best Mac OS Massively Multiplayer games. Its score was calculated by analyzing a total of 36,817 reviews on Steam. This breaks down to a total of 33,931 positive reviews and 2,886 negative reviews — making it "Very Positive" on Steam.
It is completely free to play and can be played and ran on both Windows and Mac systems. At the moment, it is possible to play Shakes and Fidget on the Steam Deck (though some functionality may be limited).
| Release Date | 2/25/2016 |
| Developer | Playa Games GmbH |
| Publisher | Playa Games GmbH |
| Steam App Id | 438040 |
9. Unturned
You're a survivor in the zombie infested ruins of society, and must work with your friends and forge alliances to remain among the living.
Unturned has achieved a Player Score of 90, placing it in the #9 spot for the best Mac OS Massively Multiplayer games. Its score was calculated by analyzing a total of 561,122 reviews on Steam. This breaks down to a total of 511,038 positive reviews and 50,084 negative reviews — making it "Very 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 Unturned on the Steam Deck (though some functionality may be limited).
| Release Date | 7/7/2017 |
| Developer | Smartly Dressed Games |
| Publisher | Smartly Dressed Games |
| Steam App Id | 304930 |
10. Fistful of Frags
Multiplayer based, first person enabled, action packed and skill demanding shooter set in the Wild West times. A unique combination of non stop action and slow but powerful weaponry.
Fistful of Frags has achieved a Player Score of 90, placing it in the #10 spot for the best Mac OS Massively Multiplayer games. Its score was calculated by analyzing a total of 36,732 reviews on Steam. This breaks down to a total of 33,585 positive reviews and 3,147 negative reviews — making it "Very 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 Fistful of Frags on the Steam Deck (though some functionality may be limited).
| Release Date | 5/9/2014 |
| Developer | Fistful of Frags Team |
| Publisher | Fistful of Frags Team |
| Steam App Id | 265630 |
More Massively Multiplayer Mac Games on Steam
Explore even more rankings for the 10 best Massively Multiplayer games available on Steam.
| Image | Name | Actions | ||||
|---|---|---|---|---|---|---|
| 26,696 | 11/29/2006 | 96 | $9.99 | Steam Charts | |
| 155,629 | 3/5/2025 | 95 | Free | Steam Charts | |
| 12 | 11/21/2023 | 93 | $2.99 | Steam Charts | |
| 26 | 2/2/2024 | 92 | $4.99 | Steam Charts | |
| 255 | 8/26/2021 | 91 | Free | Steam Charts | |
| 220 | 5/22/2020 | 91 | $9.99 | Steam Charts | |
| 513 | 3/30/2017 | 91 | $29.99 | Steam Charts | |
| 2,148 | 2/25/2016 | 90 | Free | Steam Charts | |
| 11,602 | 7/7/2017 | 90 | Free | Steam Charts | |
| 54 | 5/9/2014 | 90 | 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. (2026, March 27). Steam Store. Steam Store.
- Valve Corporation. (2026, March 27). Garry's Mod on Steam. Steam Store.
- Valve Corporation. (2026, March 30). Bongo Cat on Steam. Steam Store.
- Valve Corporation. (2026, March 23). Snail Simulator on Steam. Steam Store.
- Valve Corporation. (2026, March 9). Kukoro: Stream chat games on Steam. Steam Store.
- Valve Corporation. (2026, March 30). Super Animal Royale on Steam. Steam Store.
- Valve Corporation. (2026, February 28). ShellShock Live on Steam. Steam Store.
- Valve Corporation. (2026, February 24). X-Plane 11 on Steam. Steam Store.
- Valve Corporation. (2026, March 30). Shakes and Fidget on Steam. Steam Store.
- Valve Corporation. (2026, March 20). Unturned on Steam. Steam Store.
- Valve Corporation. (2026, March 23). Fistful of Frags on Steam. Steam Store.