Best Mod Games on Steam
Steam currently has 221 Mod games available to download and play. 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:
- Free mod games on Steam
- Best mod Steam Deck games
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- Best mod Steam games for Mac OS
- 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 Mod game on Steam" with a Player Score of 96. Its score was calculated by analyzing a total of 28,611 reviews on Steam. This breaks down to a total of 28,125 positive reviews and 486 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 Mod games. Its score was calculated by analyzing a total of 1,159,339 reviews on Steam. This breaks down to a total of 1,122,191 positive reviews and 37,148 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 Mod games. Its score was calculated by analyzing a total of 314,000 reviews on Steam. This breaks down to a total of 304,925 positive reviews and 9,075 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. The Chronicles Of Myrtana: Archolos
The Kingdom of Myrtana is in a dramatic situation. After the major defeat of the royal fleet in the waters of the Eastern Archipelago, the once thriving city of Archolos stood on the brink of crisis. Meanwhile, a young foreigner goes to the island in search of a new, better life.
The Chronicles Of Myrtana: Archolos has achieved a Player Score of 96, placing it in the #4 spot for the best Mod games. Its score was calculated by analyzing a total of 15,995 reviews on Steam. This breaks down to a total of 15,750 positive reviews and 245 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is completely free to play and can be played and ran on Windows systems. At the moment, it is possible to play The Chronicles Of Myrtana: Archolos on the Steam Deck (though some functionality may be limited).
| Release Date | 12/10/2021 |
| Developer | The Chronicles Of Myrtana Team |
| Publisher | The Chronicles Of Myrtana Team |
| Steam App Id | 1467450 |
5. STAR WARS™ Empire at War - Gold Pack
Command or corrupt an entire galaxy in the definitive Star Wars strategy collection. It is a time of galactic civil war. Will you take up the reins of the Rebellion, assume control of the Empire, or rule the Star Wars Underworld?
STAR WARS™ Empire at War - Gold Pack has achieved a Player Score of 96, placing it in the #5 spot for the best Mod games. Its score was calculated by analyzing a total of 39,405 reviews on Steam. This breaks down to a total of 38,473 positive reviews and 932 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $19.99 to play and can be played and ran on Windows systems. At the moment, it is possible to play STAR WARS™ Empire at War - Gold Pack on the Steam Deck (though some functionality may be limited).
| Steam Price | $19.99 |
| Release Date | 5/26/2010 |
| Developer | Petroglyph |
| Publishers | |
| Steam App Id | 32470 |
6. Half-Life 2: VR Mod
Half Life 2: VR Mod is a fan-made project, which adds full Virtual Reality support to the original 2004 PC gaming classic by Valve Software. Are you ready to become the Freeman?
Half-Life 2: VR Mod has achieved a Player Score of 95, placing it in the #6 spot for the best Mod games. Its score was calculated by analyzing a total of 6,926 reviews on Steam. This breaks down to a total of 6,779 positive reviews and 147 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is completely free to play and can be played and ran on Windows systems. At the moment, it is not possible to play or run Half-Life 2: VR Mod on the Steam Deck.
| Release Date | 9/16/2022 |
| Developer | Source VR Mod Team |
| Publishers | |
| Steam App Id | 658920 |
7. 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 #7 spot for the best Mod games. Its score was calculated by analyzing a total of 26,344 reviews on Steam. This breaks down to a total of 25,331 positive reviews and 1,013 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 |
8. Black Mesa
Relive Half-Life.
Black Mesa has achieved a Player Score of 94, placing it in the #8 spot for the best Mod games. Its score was calculated by analyzing a total of 127,689 reviews on Steam. This breaks down to a total of 121,555 positive reviews and 6,134 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 Linux systems. At the moment, it is possible to play Black Mesa on the Steam Deck (though some functionality may be limited).
| Steam Price | $19.99 |
| Release Date | 3/6/2020 |
| Developer | Crowbar Collective |
| Publisher | Crowbar Collective |
| Steam App Id | 362890 |
9. 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 #9 spot for the best Mod games. Its score was calculated by analyzing a total of 22,668 reviews on Steam. This breaks down to a total of 21,781 positive reviews and 887 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 |
10. 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 #10 spot for the best Mod games. Its score was calculated by analyzing a total of 21,036 reviews on Steam. This breaks down to a total of 20,222 positive reviews and 814 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).
More Mod Games
Explore even more rankings for the 100 best Mod games available on Steam.
| Image | Name | Actions | ||||
|---|---|---|---|---|---|---|
| 103 | 8/20/2022 | 96 | Free | Steam Charts | |
| 21,748 | 11/29/2006 | 96 | $5.99 | Steam Charts | |
| 21,582 | 5/16/2020 | 96 | Free | Steam Charts | |
| 373 | 12/10/2021 | 96 | Free | Steam Charts | |
| 3,139 | 5/26/2010 | 96 | $19.99 | Steam Charts | |
| 26 | 9/16/2022 | 95 | Free | Steam Charts | |
| 98 | 1/6/2024 | 94 | Free | Steam Charts | |
| 1,203 | 3/6/2020 | 94 | $19.99 | Steam Charts | |
| 29 | 6/25/2015 | 94 | Free | Steam Charts | |
| 52 | 4/19/2021 | 94 | Free | Steam Charts | |
 | 1,938 | 11/17/2017 | 94 | $14.99 | Steam Charts | |
 | 320 | 3/25/2022 | 94 | Free | Steam Charts | |
 | 115 | 7/14/2017 | 93 | $4.99 | Steam Charts | |
 | 17 | 3/14/2023 | 93 | Free | Steam Charts | |
 | 205 | 4/14/2023 | 93 | Free | Steam Charts | |
 | 2 | 8/12/2015 | 92 | Free | Steam Charts | |
 | 1,047 | 9/11/2006 | 92 | $5.99 | Steam Charts | |
 | 6,220 | 3/10/2015 | 92 | $29.99 | Steam Charts | |
 | 23 | 11/14/2024 | 92 | Free | Steam Charts | |
 | 8 | 6/16/2016 | 92 | 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, June 5). Garry's Mod on Steam. Steam Store.
- Valve Corporation. (2025, June 1). tModLoader on Steam. Steam Store.
- Valve Corporation. (2025, May 29). The Chronicles Of Myrtana: Archolos on Steam. Steam Store.
- Valve Corporation. (2025, May 14). STAR WARS™ Empire at War - Gold Pack on Steam. Steam Store.
- Valve Corporation. (2025, May 14). Half-Life 2: VR Mod on Steam. Steam Store.
- Valve Corporation. (2025, June 1). Portal: Revolution on Steam. Steam Store.
- Valve Corporation. (2025, May 31). Black Mesa on Steam. Steam Store.
- Valve Corporation. (2025, June 2). Portal Stories: Mel on Steam. Steam Store.
- Valve Corporation. (2025, June 3). Portal Reloaded on Steam. Steam Store.