Best Mod Linux Games on Steam
Steam currently has 223 Mod games, but not all of them are able to be played on Linux builds. 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 5/14/2025.
Looking for more? Explore other lists such as:
- Best mod games on Steam
- Best mod Steam Deck games
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- Free mod games on Steam
- Free Steam games
- Most played Steam games
- Best rated Steam games
1. Entropy : Zero 2
Bad Cop is back. Command a small army of Combine synths and soldiers on a Northern campaign to capture Dr. Judith Mossman. A modification for Half-Life 2.
Entropy : Zero 2 holds the #1 spot for "best Linux Mod game on Steam" with a Player Score of 96. Its score was calculated by analyzing a total of 28,917 reviews on Steam. This breaks down to a total of 28,432 positive reviews and 485 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is completely free to play and can be played and ran on both Windows and Linux systems. At the moment, it is possible to play Entropy : Zero 2 on the Steam Deck (though some functionality may be limited).
2. 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 #2 spot for the best Linux Mod games. Its score was calculated by analyzing a total of 1,166,193 reviews on Steam. This breaks down to a total of 1,128,895 positive reviews and 37,298 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 |
3. 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 #3 spot for the best Linux Mod games. Its score was calculated by analyzing a total of 318,885 reviews on Steam. This breaks down to a total of 309,671 positive reviews and 9,214 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).
4. Portal: Revolution
The Portal Mod you've been waiting for. Delve into a new story with original characters, spanning over 8 hours of gameplay and featuring over 40 new challenging test chambers which make use of new mechanics.
Portal: Revolution has achieved a Player Score of 94, placing it in the #4 spot for the best Linux Mod games. Its score was calculated by analyzing a total of 26,676 reviews on Steam. This breaks down to a total of 25,655 positive reviews and 1,021 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is completely free to play and can be played and ran on both Windows and Linux systems. Valve has also verified it as playable on the Steam Deck and will run well.
| Release Date | 1/6/2024 |
| Developer | Second Face Software |
| Publisher | Second Face Software |
| Steam App Id | 601360 |
5. 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 #5 spot for the best Linux Mod games. Its score was calculated by analyzing a total of 21,134 reviews on Steam. This breaks down to a total of 20,318 positive reviews and 816 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).
6. Black Mesa
Relive Half-Life.
Black Mesa has achieved a Player Score of 94, placing it in the #6 spot for the best Linux Mod games. Its score was calculated by analyzing a total of 130,047 reviews on Steam. This breaks down to a total of 123,720 positive reviews and 6,327 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $1.99 to play and can be played and ran on both Windows and Linux systems. At the moment, it is possible to play Black Mesa on the Steam Deck (though some functionality may be limited).
| Steam Price | $1.99 |
| Release Date | 3/6/2020 |
| Developer | Crowbar Collective |
| Publisher | Crowbar Collective |
| Steam App Id | 362890 |
7. 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 #7 spot for the best Linux Mod games. Its score was calculated by analyzing a total of 22,759 reviews on Steam. This breaks down to a total of 21,866 positive reviews and 893 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 |
8. Downfall - A Slay the Spire Fan Expansion
A FREE complete expansion for Slay the Spire, made by the modding community. Features one brand new normal character, plus a new game mode with SEVEN fully complete new characters starring in a twisted campaign, and so much more.
Downfall - A Slay the Spire Fan Expansion has achieved a Player Score of 94, placing it in the #8 spot for the best Linux Mod games. Its score was calculated by analyzing a total of 3,972 reviews on Steam. This breaks down to a total of 3,877 positive reviews and 95 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is completely free to play and can be played and ran on both Windows and Linux systems. At the moment, it is possible to play Downfall - A Slay the Spire Fan Expansion on the Steam Deck (though some functionality may be limited).
| Release Date | 3/25/2022 |
| Developer | Table 9 Studio |
| Publisher | Table 9 Studio |
| Steam App Id | 1865780 |
9. 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 #9 spot for the best Linux Mod games. Its score was calculated by analyzing a total of 6,340 reviews on Steam. This breaks down to a total of 6,127 positive reviews and 213 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $2.99 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 | $2.99 |
| Release Date | 7/14/2017 |
| Developer | Corroding Games |
| Publisher | Corroding Games |
| Steam App Id | 647960 |
10. Half-Life: MMod
Half-Life 1: MMod is a free, fan made modification for Half-Life aiming to refine player's arsenal and further expand player's combat options. Featuring AI tweaks, VFX and SFX overhaul in spirit of original, additional weapon functionality and bug fixes, while keeping most changes optional.
Half-Life: MMod has achieved a Player Score of 93, placing it in the #10 spot for the best Linux Mod games. Its score was calculated by analyzing a total of 5,097 reviews on Steam. This breaks down to a total of 4,912 positive reviews and 185 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is completely free to play and can be played and ran on both Windows and Linux systems. At the moment, it is possible to play Half-Life: MMod on the Steam Deck (though some functionality may be limited).
| Release Date | 3/14/2023 |
| Developer | MMod Team |
| Publisher | Gunship_Mark_II |
| Steam App Id | 1761270 |
More Mod Linux Games on Steam
Explore even more rankings for the 10 best Mod games available on Steam.
| Image | Name | Actions | ||||
|---|---|---|---|---|---|---|
| 60 | 8/20/2022 | 96 | Free | Steam Charts | |
| 18,182 | 11/29/2006 | 96 | $5.99 | Steam Charts | |
| 24,459 | 5/16/2020 | 96 | Free | Steam Charts | |
| 76 | 1/6/2024 | 94 | Free | Steam Charts | |
| 41 | 4/19/2021 | 94 | Free | Steam Charts | |
| 2,064 | 3/6/2020 | 94 | $1.99 | Steam Charts | |
| 35 | 6/25/2015 | 94 | Free | Steam Charts | |
| 185 | 3/25/2022 | 94 | Free | Steam Charts | |
| 154 | 7/14/2017 | 93 | $2.99 | Steam Charts | |
| 13 | 3/14/2023 | 93 | 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. (2025, May 14). Steam Store. Steam Store.
- Valve Corporation. (2025, May 14). Entropy : Zero 2 on Steam. Steam Store.
- Valve Corporation. (2025, July 9). Garry's Mod on Steam. Steam Store.
- Valve Corporation. (2025, July 1). tModLoader on Steam. Steam Store.
- Valve Corporation. (2025, June 27). Portal: Revolution on Steam. Steam Store.
- Valve Corporation. (2025, June 25). Portal Reloaded on Steam. Steam Store.
- Valve Corporation. (2025, July 1). Black Mesa on Steam. Steam Store.
- Valve Corporation. (2025, June 2). Portal Stories: Mel on Steam. Steam Store.
- Valve Corporation. (2025, July 1). Downfall - A Slay the Spire Fan Expansion on Steam. Steam Store.
- Valve Corporation. (2025, July 7). Rusted Warfare - RTS on Steam. Steam Store.
- Valve Corporation. (2025, May 17). Half-Life: MMod on Steam. Steam Store.