Free Mod Games on Steam
Steam currently has 232 Mod games available to download and play. Explore our list of the best free games ranked by popularity and ratings. Data for this list is calculated from reviews and player counts reported directly by Steam and will be updated in real-time. Free Mod game rankings were last updated on 10/18/2025.
Looking for more? Explore other lists such as:
- Best mod games on Steam
- Best mod Steam Deck games
- Best mod Steam games for Mac OS
- Best mod Linux games on Steam
- Free Steam games
- Most played Steam games
- Best rated Steam games
1. 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 holds the #1 spot for "best free Mod game on Steam" with a Player Score of 96. Its score was calculated by analyzing a total of 331,520 reviews on Steam. This breaks down to a total of 321,868 positive reviews and 9,652 negative reviews — making it "Overwhelmingly Positive" on Steam.
It 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).
2. BLEACH Brave Souls
The world of mega-hit manga and anime BLEACH comes to Steam in this exciting 3D action game! Build a team using your favorite characters from the BLEACH universe!
BLEACH Brave Souls has achieved a Player Score of 86, placing it in the #2 spot for the best free Mod games. Its score was calculated by analyzing a total of 12,302 reviews on Steam. This breaks down to a total of 10,810 positive reviews and 1,492 negative reviews — making it "Very Positive" on Steam.
It can be played and ran on Windows systems. At the moment, it is not possible to play or run BLEACH Brave Souls on the Steam Deck.
3. Cry of Fear
Cry of Fear is a psychological single-player and co-op horror game set in a deserted town filled with horrific creatures and nightmarish delusions. You play as a young man desperately searching for answers in the cold Scandinavian night, finding his way through the city as he slowly descends into madness.
Cry of Fear has achieved a Player Score of 87, placing it in the #3 spot for the best free Mod games. Its score was calculated by analyzing a total of 78,094 reviews on Steam. This breaks down to a total of 69,206 positive reviews and 8,888 negative reviews — making it "Very Positive" on Steam.
It can be played and ran on Windows systems. At the moment, it is not possible to play or run Cry of Fear on the Steam Deck.
| Release Date | 4/25/2013 |
| Developer | Team Psykskallar |
| Publisher | Team Psykskallar |
| Steam App Id | 223710 |
4. No More Room in Hell
The chances of you surviving this all out war of society and the undead are slim to none. Already, there are millions of the walking dead shambling about, searching for food to eat. There's no known cure. One bite can possibly end it all for you. However, you aren't alone in this nightmare.
No More Room in Hell has achieved a Player Score of 89, placing it in the #4 spot for the best free Mod games. Its score was calculated by analyzing a total of 74,955 reviews on Steam. This breaks down to a total of 67,390 positive reviews and 7,565 negative reviews — making it "Very Positive" on Steam.
It can be played and ran on both Windows and Linux systems. At the moment, it is possible to play No More Room in Hell on the Steam Deck (though some functionality may be limited).
| Release Date | 10/31/2013 |
| Developer | No More Room in Hell Team |
| Publisher | Lever Games |
| Steam App Id | 224260 |
5. Bloons TD Battles
Go head to head with other players in a Bloon-popping battle for victory. From the creators of best-selling Bloons TD 5, this all new Battles game is specially designed for multiplayer combat, featuring the ability to control bloons directly and send them charging past your opponent's defenses.
Bloons TD Battles has achieved a Player Score of 89, placing it in the #5 spot for the best free Mod games. Its score was calculated by analyzing a total of 29,155 reviews on Steam. This breaks down to a total of 26,462 positive reviews and 2,693 negative reviews — making it "Very Positive" on Steam.
It can be played and ran on both Windows and Mac systems. At the moment, it is possible to play Bloons TD Battles on the Steam Deck (though some functionality may be limited).
| Release Date | 4/20/2016 |
| Franchise | Ninja Kiwi Games |
| Developer | Ninja Kiwi |
| Publisher | Ninja Kiwi |
| Steam App Id | 444640 |
6. DFHack - Dwarf Fortress Modding Engine
Extensions for Dwarf Fortress, including bugfixes, interface improvements, automation agents, design blueprints, modding building blocks, and other tools.
DFHack - Dwarf Fortress Modding Engine has achieved a Player Score of 93, placing it in the #6 spot for the best free Mod games. Its score was calculated by analyzing a total of 839 reviews on Steam. This breaks down to a total of 835 positive reviews and 4 negative reviews — making it "Overwhelmingly Positive" on Steam.
It can be played and ran on both Windows and Linux systems. At the moment, it is possible to play DFHack - Dwarf Fortress Modding Engine on the Steam Deck (though some functionality may be limited).
| Release Date | 4/14/2023 |
| Developer | The DFHack Team |
| Publisher | The DFHack Team |
| Steam App Id | 2346660 |
7. 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 #7 spot for the best free Mod games. Its score was calculated by analyzing a total of 16,453 reviews on Steam. This breaks down to a total of 16,194 positive reviews and 259 negative reviews — making it "Overwhelmingly Positive" on Steam.
It 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 |
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 free Mod games. Its score was calculated by analyzing a total of 4,091 reviews on Steam. This breaks down to a total of 3,994 positive reviews and 97 negative reviews — making it "Overwhelmingly Positive" on Steam.
It 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. Enderal: Forgotten Stories (Special Edition)
Enderal: Forgotten Stories (Special Edition) is a total conversion mod for Skyrim SE. It offers an immersive open world, new skill systems and gameplay with a dark, psychological storyline and believable characters. SE features a new rendering engine, improved lighting, performance and stability.
Enderal: Forgotten Stories (Special Edition) has achieved a Player Score of 90, placing it in the #9 spot for the best free Mod games. Its score was calculated by analyzing a total of 8,741 reviews on Steam. This breaks down to a total of 8,131 positive reviews and 610 negative reviews — making it "Very Positive" on Steam.
It can be played and ran on Windows systems. At the moment, it is possible to play Enderal: Forgotten Stories (Special Edition) on the Steam Deck (though some functionality may be limited).
10. Synergy
Synergy enables you to play through the Half-Life 2 series and many other singleplayer Source Mods cooperatively with friends.
Synergy has achieved a Player Score of 87, placing it in the #10 spot for the best free Mod games. Its score was calculated by analyzing a total of 11,156 reviews on Steam. This breaks down to a total of 9,972 positive reviews and 1,184 negative reviews — making it "Very Positive" on Steam.
It can be played and ran on both Windows and Linux systems. At the moment, it is possible to play Synergy on the Steam Deck (though some functionality may be limited).
| Release Date | 10/3/2008 |
| Developer | Synergy Team |
| Steam App Id | 17520 |
More Free Mod Games
Explore even more rankings for the 100 best free Mod games available on Steam.
| Image | Name | Actions | ||||
|---|---|---|---|---|---|---|
| 20,060 | 5/16/2020 | 96 | Free | Steam Charts | |
| 815 | 8/18/2020 | 86 | Free | Steam Charts | |
| 476 | 4/25/2013 | 87 | Free | Steam Charts | |
| 256 | 10/31/2013 | 89 | Free | Steam Charts | |
| 209 | 4/20/2016 | 89 | Free | Steam Charts | |
| 201 | 4/14/2023 | 93 | Free | Steam Charts | |
| 197 | 12/10/2021 | 96 | Free | Steam Charts | |
| 196 | 3/25/2022 | 94 | Free | Steam Charts | |
| 184 | 4/2/2021 | 90 | Free | Steam Charts | |
| 128 | 10/3/2008 | 87 | Free | Steam Charts | |
 | 112 | 1/6/2024 | 94 | Free | Steam Charts | |
 | 86 | 8/20/2022 | 96 | Free | Steam Charts | |
 | 80 | 6/9/2009 | 87 | Free | Steam Charts | |
 | 70 | 5/9/2014 | 90 | Free | Steam Charts | |
 | 64 | 3/24/2023 | 78 | Free | Steam Charts | |
 | 54 | 10/13/2015 | 88 | Free | Steam Charts | |
 | 52 | 2/14/2019 | 91 | Free | Steam Charts | |
 | 45 | 11/30/2017 | 83 | Free | Steam Charts | |
 | 37 | 8/9/2024 | 88 | Free | Steam Charts | |
 | 34 | 6/1/2017 | 81 | Free | Steam Charts |
Soures & References
Steambase has best-in-class data powered directly by Steam, our data partners, and in-house experts. Player counts 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, October 18). Steam Store. Steam Store.
- Valve Corporation. (2025, October 18). tModLoader on Steam. Steam Store.
- Valve Corporation. (2025, October 17). BLEACH Brave Souls on Steam. Steam Store.
- Valve Corporation. (2025, October 17). Cry of Fear on Steam. Steam Store.
- Valve Corporation. (2025, August 2). No More Room in Hell on Steam. Steam Store.
- Valve Corporation. (2025, October 13). Bloons TD Battles on Steam. Steam Store.
- Valve Corporation. (2025, October 9). DFHack - Dwarf Fortress Modding Engine on Steam. Steam Store.
- Valve Corporation. (2025, October 17). The Chronicles Of Myrtana: Archolos on Steam. Steam Store.
- Valve Corporation. (2025, October 8). Downfall - A Slay the Spire Fan Expansion on Steam. Steam Store.
- Valve Corporation. (2025, October 17). Enderal: Forgotten Stories (Special Edition) on Steam. Steam Store.
- Valve Corporation. (2025, October 16). Synergy on Steam. Steam Store.