Best Mod Games on Steam (for Mac OS)
Steam currently has 185 Mod 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. Mod game rankings were last updated on 5/17/2024.
Looking for more? Explore other lists such as:
- Best mod games on Steam
- Best mod Steam Deck games
- Best mod Linux games on Steam
- Free mod 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 Mod game on Steam" with a Player Score of 96. 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 |
2. 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 #2 spot for the best Mac OS Mod games. Its score was calculated by analyzing a total of 248,755 reviews on Steam. This breaks down to a total of 241,425 positive reviews and 7,330 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).
3. Portal Reloaded
Portal Reloaded is a free, community made modification for Portal 2. The mod builds on the concepts of the main game by allowing you to place a third portal, which enables traveling between two different timelines. Thinking in four dimensions is vital to solving 25 brand new mind-bending puzzles.
Portal Reloaded has achieved a Player Score of 94, placing it in the #3 spot for the best Mac OS Mod games. Its score was calculated by analyzing a total of 19,698 reviews on Steam. This breaks down to a total of 18,976 positive reviews and 722 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 Portal Reloaded on the Steam Deck (though some functionality may be limited).
4. Portal Stories: Mel
Portal Stories: Mel is a community made, free modification for Portal 2 based in the Portal universe. It tells the story of Mel, who meets a new personality core and faces an undiscovered threat to the Aperture facility.
Portal Stories: Mel has achieved a Player Score of 94, placing it in the #4 spot for the best Mac OS Mod games. Its score was calculated by analyzing a total of 21,555 reviews on Steam. This breaks down to a total of 20,736 positive reviews and 819 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, there is no confirmed information regarding Steam Deck support for this game.
| Release Date | 6/25/2015 |
| Developer | Prism Game Studios Ltd. |
| Publisher | Prism Game Studios Ltd. |
| Steam App Id | 317400 |
5. Rusted Warfare - RTS
{{An RTS inspired by the classics of the past!}} Making up for it's subpar retro graphics with fun gameplay and modern multi-threaded tech enabling huge battles to run smooth... Featuring singleplayer challenges, skirmish, sandbox, 10-player multiplayer & workshop modding.
Rusted Warfare - RTS has achieved a Player Score of 93, placing it in the #5 spot for the best Mac OS Mod games. Its score was calculated by analyzing a total of 4,819 reviews on Steam. This breaks down to a total of 4,680 positive reviews and 139 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 Rusted Warfare - RTS on the Steam Deck (though some functionality may be limited).
| Steam Price | $4.99 |
| Release Date | 7/14/2017 |
| Developer | Corroding Games |
| Publisher | Corroding Games |
| Steam App Id | 647960 |
6. Cities: Skylines
Cities: Skylines is a modern take on the classic city simulation. The game introduces new game play elements to realize the thrill and hardships of creating and maintaining a real city whilst expanding on some well-established tropes of the city building experience.
Cities: Skylines has achieved a Player Score of 92, placing it in the #6 spot for the best Mac OS Mod games. Its score was calculated by analyzing a total of 255,219 reviews on Steam. This breaks down to a total of 238,041 positive reviews and 17,178 negative reviews — making it "Very Positive" on Steam.
It is priced at $8.99 to play and can be played and ran on Windows, Mac, and Linux systems. At the moment, it is possible to play Cities: Skylines on the Steam Deck (though some functionality may be limited).
| Steam Price | $8.99 |
| Release Date | 3/10/2015 |
| Developer | Colossal Order Ltd. |
| Publisher | Paradox Interactive |
| Steam App Id | 255710 |
7. Half-Life 2: Update
A completely free and extensive community-developed update for Half-Life 2 featuring beautiful lighting, countless bug fixes, and a brand new Community Commentary Mode. With Half-Life 2: Update, there’s never been a better time to revisit City 17.
Half-Life 2: Update has achieved a Player Score of 91, placing it in the #7 spot for the best Mac OS Mod games. Its score was calculated by analyzing a total of 7,421 reviews on Steam. This breaks down to a total of 6,949 positive reviews and 472 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 Half-Life 2: Update on the Steam Deck (though some functionality may be limited).
| Release Date | 3/27/2015 |
| Developers | |
| Publisher | Filip Victor |
| Steam App Id | 290930 |
8. Estranged: Act I
Estranged tells the story of a lone fisherman, whose ship is stranded on a mysterious island during a violent storm. Explore the rich environments and meet the curious inhabitants of the island as you find a way back to the mainland.
Estranged: Act I has achieved a Player Score of 90, placing it in the #8 spot for the best Mac OS Mod games. Its score was calculated by analyzing a total of 7,014 reviews on Steam. This breaks down to a total of 6,551 positive reviews and 463 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 Estranged: Act I on the Steam Deck (though some functionality may be limited).
| Release Date | 1/16/2014 |
| Franchise | Estranged Franchise |
| Developer | Alan Edwardes |
| Publisher | Alan Edwardes |
| Steam App Id | 261820 |
9. PIPE by BMX Streets
PIPE is a physics based BMX experience built for the BMX community designed to simulate realistic BMX motion. Perform over 50 aerial stunts, grind any corner, send big airs in the PIPE! PIPE also includes some fun Easter Eggs for those willing to explore and think outside the box.
PIPE by BMX Streets has achieved a Player Score of 90, placing it in the #9 spot for the best Mac OS Mod games. Its score was calculated by analyzing a total of 6,114 reviews on Steam. This breaks down to a total of 5,706 positive reviews and 408 negative reviews — making it "Very Positive" on Steam.
It is priced at $9.99 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 | $9.99 |
| Release Date | 3/15/2018 |
| Developer | Mash Games |
| Publisher | Mash Games |
| Steam App Id | 815780 |
10. Car Mechanic Simulator 2015
New cars, new tools, new options, more parts and much more fun in the next version of Car Mechanic Simulator! Take your wrench! Create and expand your auto repairs service empire. Car Mechanic Simulator 2015 will take you behind the scenes of daily routine in car workshop.
Car Mechanic Simulator 2015 has achieved a Player Score of 90, placing it in the #10 spot for the best Mac OS Mod games. Its score was calculated by analyzing a total of 14,476 reviews on Steam. This breaks down to a total of 13,368 positive reviews and 1,108 negative reviews — making it "Very 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 Car Mechanic Simulator 2015 on the Steam Deck (though some functionality may be limited).
| Steam Price | $19.99 |
| Release Date | 4/23/2015 |
| Developer | Red Dot Games |
| Publishers | |
| Steam App Id | 320300 |
More Mod Mac Games on Steam
Explore even more rankings for the 10 best Mod games available on Steam.
| Image | Name | Actions | ||||
|---|---|---|---|---|---|---|
 | 15,703 | 11/29/2006 | 96 | $9.99 | Steam Charts | |
 | 23,800 | 5/16/2020 | 96 | Free | Steam Charts | |
 | 61 | 4/19/2021 | 94 | Free | Steam Charts | |
 | 40 | 6/25/2015 | 94 | Free | Steam Charts | |
 | 137 | 7/14/2017 | 93 | $4.99 | Steam Charts | |
 | 8,202 | 3/10/2015 | 92 | $8.99 | Steam Charts | |
 | 28 | 3/27/2015 | 91 | Free | Steam Charts | |
 | 2 | 1/16/2014 | 90 | Free | Steam Charts | |
 | 12 | 3/15/2018 | 90 | $9.99 | Steam Charts | |
 | 10 | 4/23/2015 | 90 | $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. (2024, May 17). Steam Store. Steam Store.
- Valve Corporation. (2024, May 17). Garry's Mod on Steam. Steam Store.
- Valve Corporation. (2024, May 19). tModLoader on Steam. Steam Store.
- Valve Corporation. (2024, May 14). Portal Reloaded on Steam. Steam Store.
- Valve Corporation. (2024, March 24). Portal Stories: Mel on Steam. Steam Store.
- Valve Corporation. (2024, April 10). Rusted Warfare - RTS on Steam. Steam Store.
- Valve Corporation. (2024, May 14). Cities: Skylines on Steam. Steam Store.
- Valve Corporation. (2024, March 12). Half-Life 2: Update on Steam. Steam Store.
- Valve Corporation. (2024, May 18). Estranged: Act I on Steam. Steam Store.
- Valve Corporation. (2024, April 15). PIPE by BMX Streets on Steam. Steam Store.
- Valve Corporation. (2024, May 10). Car Mechanic Simulator 2015 on Steam. Steam Store.