Best Moddable Games on Steam
Steam currently has 2,147 Moddable 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. Moddable game rankings were last updated on 10/8/2026.
Looking for more? Explore other lists such as:
- Free moddable games on Steam
- Best moddable Steam Deck games
- Best moddable Linux games on Steam
- Best moddable Steam games for Mac OS
- Free Steam games
- Most played Steam games
- Best rated Steam games
1. Left 4 Dead 2
Set in the zombie apocalypse, Left 4 Dead 2 is a co-operative action horror FPS takes you and your friends through the cities, swamps and cemeteries of the Deep South, from Savannah to New Orleans across five expansive campaigns.
Left 4 Dead 2 holds the #1 spot for "best Moddable game on Steam" with a Player Score of 97. Its score was calculated by analyzing a total of 1,065,846 reviews on Steam. This breaks down to a total of 1,039,400 positive reviews and 26,446 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $9.99 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.
2. RimWorld
A sci-fi colony sim driven by an intelligent AI storyteller. Generates stories by simulating psychology, ecology, gunplay, melee combat, climate, biomes, diplomacy, interpersonal relationships, art, medicine, trade, and more.
RimWorld has achieved a Player Score of 97, placing it in the #2 spot for the best Moddable games. Its score was calculated by analyzing a total of 248,295 reviews on Steam. This breaks down to a total of 242,968 positive reviews and 5,327 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $34.99 to play and can be played and ran on Windows, Mac, and Linux systems. Valve has also verified it as playable on the Steam Deck and will run well.
| Steam Price | $34.99 |
| Release Date | 10/17/2018 |
| Developer | Ludeon Studios |
| Publisher | Ludeon Studios |
| Steam App Id | 294100 |
3. Euro Truck Simulator 2
Travel across Europe as king of the road, a trucker who delivers important cargo across impressive distances! With dozens of cities to explore, your endurance, skill and speed will all be pushed to their limits.
Euro Truck Simulator 2 has achieved a Player Score of 97, placing it in the #3 spot for the best Moddable games. Its score was calculated by analyzing a total of 950,510 reviews on Steam. This breaks down to a total of 926,178 positive reviews and 24,332 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $19.99 to play and can be played and ran on Windows, Mac, and Linux systems. Valve has also verified it as playable on the Steam Deck and will run well.
| Steam Price | $19.99 |
| Release Date | 10/12/2012 |
| Franchise | SCS Software |
| Developer | SCS Software |
| Publisher | SCS Software |
| Steam App Id | 227300 |
4. Half-Life 2
Reawakened from stasis in the occupied metropolis of City 17, Gordon Freeman is joined by Alyx Vance as he leads a desperate human resistance. Experience the landmark first-person shooter packed with immersive world-building, boundary-pushing physics, and exhilarating combat.
Half-Life 2 has achieved a Player Score of 97, placing it in the #4 spot for the best Moddable games. Its score was calculated by analyzing a total of 281,349 reviews on Steam. This breaks down to a total of 274,588 positive reviews and 6,761 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $9.99 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.
5. Mount & Blade: Warband
In a land torn asunder by incessant warfare, it is time to assemble your own band of hardened warriors and enter the fray. Lead your men into battle, expand your realm, and claim the ultimate prize: the throne of Calradia!
Mount & Blade: Warband has achieved a Player Score of 96, placing it in the #5 spot for the best Moddable games. Its score was calculated by analyzing a total of 172,507 reviews on Steam. This breaks down to a total of 168,564 positive reviews and 3,943 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $19.99 to play and can be played and ran on Windows, Mac, and Linux systems. At the moment, it is possible to play Mount & Blade: Warband on the Steam Deck (though some functionality may be limited).
| Steam Price | $19.99 |
| Release Date | 3/31/2010 |
| Developer | TaleWorlds Entertainment |
| Publisher | TaleWorlds Entertainment |
| Steam App Id | 48700 |
6. VPet-Simulator
Feeling like the computer desktop is too dull? Need something cute to heal oneself? Come and try this new completely free and open source V-Pet simulator. A cute and adorable pet that supports various feeding interactions to accompany you in game learning is definitely your best choice!
VPet-Simulator has achieved a Player Score of 96, placing it in the #6 spot for the best Moddable games. Its score was calculated by analyzing a total of 52,006 reviews on Steam. This breaks down to a total of 51,114 positive reviews and 892 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 VPet-Simulator on the Steam Deck.
7. People Playground
Shoot, stab, burn, poison, tear, vaporise, or crush ragdolls in a large open space.
People Playground has achieved a Player Score of 96, placing it in the #7 spot for the best Moddable games. Its score was calculated by analyzing a total of 321,728 reviews on Steam. This breaks down to a total of 313,630 positive reviews and 8,098 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $9.99 to play and can be played and ran on Windows systems. At the moment, it is possible to play People Playground on the Steam Deck (though some functionality may be limited).
| Steam Price | $9.99 |
| Release Date | 7/23/2019 |
| Developer | mestiez |
| Publisher | Studio Minus |
| Steam App Id | 1118200 |
8. Factorio
Factorio is a game about building and creating automated factories to produce items of increasing complexity, within an infinite 2D world. Use your imagination to design your factory, combine simple elements into ingenious structures, and finally protect it from the creatures who don't really like you.
Factorio has achieved a Player Score of 96, placing it in the #8 spot for the best Moddable games. Its score was calculated by analyzing a total of 236,071 reviews on Steam. This breaks down to a total of 230,225 positive reviews and 5,846 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $35.00 to play and can be played and ran on Windows, Mac, and Linux systems. Valve has also verified it as playable on the Steam Deck and will run well.
| Steam Price | $35.00 |
| Release Date | 8/14/2020 |
| Developer | Wube Software LTD. |
| Publisher | Wube Software LTD. |
| Steam App Id | 427520 |
9. BeamNG.drive
A dynamic soft-body physics vehicle simulator capable of doing just about anything.
BeamNG.drive has achieved a Player Score of 96, placing it in the #9 spot for the best Moddable games. Its score was calculated by analyzing a total of 425,574 reviews on Steam. This breaks down to a total of 413,627 positive reviews and 11,947 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $24.99 to play and can be played and ran on Windows systems. At the moment, it is possible to play BeamNG.drive on the Steam Deck (though some functionality may be limited).
10. 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 #10 spot for the best Moddable games. Its score was calculated by analyzing a total of 1,271,103 reviews on Steam. This breaks down to a total of 1,231,469 positive reviews and 39,634 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 |
More Moddable Games
Explore even more rankings for the 100 best Moddable games available on Steam.
| Image | Name | Actions | ||||
|---|---|---|---|---|---|---|
| 21,180 | 11/16/2009 | 97 | $9.99 | Steam Charts | |
| 22,950 | 10/17/2018 | 97 | $34.99 | Steam Charts | |
| 19,247 | 10/12/2012 | 97 | $19.99 | Steam Charts | |
| 1,313 | 11/16/2004 | 97 | $9.99 | Steam Charts | |
| 2,280 | 3/31/2010 | 96 | $19.99 | Steam Charts | |
| 2,308 | 8/14/2023 | 96 | Free | Steam Charts | |
| 4,566 | 7/23/2019 | 96 | $9.99 | Steam Charts | |
| 17,161 | 8/14/2020 | 96 | $35.00 | Steam Charts | |
| 19,592 | 5/29/2015 | 96 | $24.99 | Steam Charts | |
| 24,432 | 11/29/2006 | 96 | $9.99 | Steam Charts | |
 | 98 | 8/20/2022 | 96 | Free | Steam Charts | |
 | 19,105 | 5/16/2020 | 96 | Free | Steam Charts | |
 | 116 | 10/5/2017 | 96 | $29.99 | Steam Charts | |
 | 1,909 | 5/25/2010 | 96 | $19.99 | Steam Charts | |
 | 7,023 | 2/2/2016 | 96 | $19.99 | Steam Charts | |
 | 282 | 11/2/2012 | 96 | $9.99 | Steam Charts | |
 | 799 | 11/19/1998 | 95 | $9.99 | Steam Charts | |
 | 701 | 5/18/2017 | 95 | $17.99 | Steam Charts | |
 | 932 | 4/23/2013 | 95 | $2.49 | Steam Charts | |
 | 13,108 | 11/1/2004 | 95 | $9.99 | 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. (2026, October 8). Steam Store. Steam Store.
- Valve Corporation. (2026, October 8). Left 4 Dead 2 on Steam. Steam Store.
- Valve Corporation. (2026, June 20). RimWorld on Steam. Steam Store.
- Valve Corporation. (2026, September 2). Euro Truck Simulator 2 on Steam. Steam Store.
- Valve Corporation. (2026, October 8). Half-Life 2 on Steam. Steam Store.
- Valve Corporation. (2026, April 5). Mount & Blade: Warband on Steam. Steam Store.
- Valve Corporation. (2026, June 18). VPet-Simulator on Steam. Steam Store.
- Valve Corporation. (2026, May 18). People Playground on Steam. Steam Store.
- Valve Corporation. (2026, June 23). Factorio on Steam. Steam Store.
- Valve Corporation. (2026, June 22). BeamNG.drive on Steam. Steam Store.
- Valve Corporation. (2026, July 11). Garry's Mod on Steam. Steam Store.