Best Moddable games on Steam
Unlike generic lists, our strategy game recommendations use a rigorous analysis of Steam user reviews to identify and feature only the best, community-validated moddable games. For those who prefer not to search, lists of the most played, top deals and best free moddable games are available at the bottom of the page.
Filters & Lists
Saints Row 2
Saints Row 2 brings true freedom to open-world gaming. Players can play as who they want, how they want, and with whomever they want in this sequel to the much acclaimed and tremendously successful Saints Row.
Call of Duty: World at War
Call of Duty is back, redefining war like you've never experienced before. Building on the Call of Duty 4®: Modern Warfare engine, Call of Duty: World at War immerses players into the most gritty and chaotic WWII combat ever experienced.
Left 4 Dead
From Valve (the creators of Counter-Strike, Half-Life and more) comes Left 4 Dead, a co-op action horror game for the PC and Xbox 360 that casts up to four players in an epic struggle for survival against swarming zombie hordes and terrifying mutant monsters.
Mount & Blade
Calradia is a land at war, offering great riches and even greater dangers to adventurers and mercenaries that flock to shed their blood on its soil. With courage and a strong sword, an unknown stranger can make a name as a warrior. Free-form sand-box gameplay.
Fallout 3
Vault-Tec engineers have worked around the clock on an interactive reproduction of Wasteland life for you to enjoy from the comfort of your own vault. Included is an expansive world, unique combat, shockingly realistic visuals, tons of player choice, and an incredible cast of dynamic characters.
X3: Terran Conflict
It is the year 2938. The long wished-for encounter of the X Universe and the Earth holds both joy and sorrow for the people. Despite flourishing trade, the clash of the diverse races, cultures and life forms creates new tensions, mistrust and open conflict that need to be overcome!
Sid Meier's Civilization IV: Colonization
Sid Meier's Civilization IV: Colonization is the third offering in the award winning Civilization IV series. A re-imagining of the classic Colonization game Sid Meier created in 1994, Sid Meier's Civilization IV: Colonization is a total conversion of the Civilization IV engine into a game experience in which players will lead a European...
S.T.A.L.K.E.R.: Clear Sky
S.T.A.L.K.E.R.: Clear Sky – standalone prequel for the acclaimed S.T.A.L.K.E.R.: Shadow of Chernobyl, which tells you story about the Clear Sky group, that want to research the Zone and understand it better.
Tom Clancy's Ghost Recon®
Eastern Europe, 2008. War has broken out on the borders of Russia and the fate of the world hangs in the balance. That's when the call goes out for the Ghostsan elite handful of specially trained Green Berets, armed with the latest technology and trained to use the deadliest weapons.
IL-2 Sturmovik: 1946
Il-2 1946 includes all of the original IL-2 series content: IL-2 Sturmovik™: Forgotten Battles, Ace Expansion Pack, Pacific Fighters™ and alternate histry campaigns of year 1946. What was years ago began as a one-aircraft study sim is now an astonishing anthology, with a whopping 229 flyable aircraft and over 300 aircraft total!
Call of Duty® 4: Modern Warfare® (2007)
The new action-thriller from the award-winning team at Infinity Ward, the creators of the Call of Duty® series, delivers the most intense and cinematic action experience ever. Call of Duty 4: Modern Warfare arms gamers with an arsenal of advanced and powerful modern day firepower and transports them to the most treacherous hotspots...
Medieval II: Total War™ Kingdoms
Medieval II: Total War Kingdoms is the official expansion to last year's award-winning Medieval II: Total War, presenting players with all-new territories to explore, troops to command, and enemies to conquer.
Quake III Arena
The greatest warriors of all time and space have been summoned to battle for the amusement of an ancient alien race. Wield a variety of guns and power-ups as you fight for glory against ruthless combatants in this fast-paced single-player and multiplayer FPS.
Quake
Developed by the award-winning id Software, Quake® is the ground-breaking, original dark fantasy first-person shooter that inspires today’s retro-style FPS games. With Quake (Enhanced), experience the authentic, updated, and visually enhanced version of the original.
DOOM + DOOM II
Developed by id Software, and originally released in 1993 and 1994, the definitive, newly enhanced versions of DOOM + DOOM II are available as a combined product.
Wolfenstein 3D
World War II rages. The Nazis are planning to build an unstoppable, mutant army. On a mission to steal the secret plans, you were captured and imprisoned. Now, a lucky break gives you the chance to escape, but a maze of passages and trigger-happy Nazis stand in your way.
Civilization IV: Beyond the Sword
Sid Meier's Civilization IV®: Beyond the Sword is the second expansion pack for Civilization IV - the 2005 PC Game of the Year that has become a worldwide hit.
Company of Heroes - Legacy Edition
Delivering a visceral WWII gaming experience, Company of Heroes redefines RTS by bringing the sacrifice of heroic soldiers, war-ravaged environments, and dynamic battlefields to life. This legacy version also grants access to the latest version of COH, just called "Company of Heroes".
Nexus - The Jupiter Incident
Ambitious megacorporations monopolize the conquest of space and the colonization of the solar system. At the very edge of the solar system, the companies make a discovery that will shift the technological advantage and upset the balance. And so a new conflict is born: "The Jupiter Incident."
Deus Ex: Game of the Year Edition
The year is 2052 and the world is a dangerous and chaotic place. Terrorists operate openly - killing thousands; drugs, disease and pollution kill even more. The world's economies are close to collapse and the gap between the insanely wealthy and the desperately poor grows ever wider.
S.T.A.L.K.E.R.: Shadow of Chernobyl
S.T.A.L.K.E.R.: Shadow of Chernobyl tells a story about survival in the Zone – a very dangerous place, where you fear not only the radiation, anomalies and deadly creatures, but other S.T.A.L.K.E.R.s, who have their own goals and wishes.
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.
Total War: MEDIEVAL II – Definitive Edition
Spanning the most turbulent era in Western history, your quest for territory and power takes you through Europe, Africa, the Middle East, and even onto the shores of the New World.Most played moddable games on Steam
Take a look at the top moddable games that are currently attracting the largest player bases on the Steam platform, as of April 19th 2025.
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 is a sandbox, moddable and multiplayer game developed by Facepunch Studios and published by Valve. Released on November 29th 2006 has received 1,150,066 reviews of which 1,113,171 were positive and 36,895 were negative resulting in an impressive rating of 9.6 out of 10. The game has hit the top spot as the #1 most played moddable game, thanks to its 21,543 peak concurrent players over the last day.
9.6
1,113,171
36,895
21,543
players
2. Fallout: New Vegas
Welcome to Vegas. New Vegas. Enjoy your stay! Fallout: New Vegas is a open world, rpg and post-apocalyptic game developed by Obsidian Entertainment and published by Bethesda Softworks. Released on October 21st 2010 has received 225,222 reviews of which 216,413 were positive and 8,809 were negative resulting in an impressive rating of 9.5 out of 10. While seeing 5,610 players online at once in the last 24 hours, this game is currently ranked #2 among moddable games based on player count.
9.5
216,413
8,809
5,610
players
3. People Playground
Shoot, stab, burn, poison, tear, vaporise, or crush ragdolls in a large open space. People Playground is a sandbox, gore and physics game developed by mestiez and published by Studio Minus. Released on July 23rd 2019 has received 278,502 reviews of which 274,557 were positive and 3,945 were negative resulting in an impressive rating of 9.8 out of 10. While seeing 4,662 players online at once in the last 24 hours, this game is currently ranked #3 among moddable games based on player count.
9.8
274,557
3,945
4,662
players
4. Workers & Resources: Soviet Republic
Build a soviet republic from an impoverished country into a rich industrial superpower in a city builder with intricate production chains and a fully simulated global economy. Manage the lives of your citizens from education to work and party loyalty to criminal activity. Workers & Resources: Soviet Republic is a strategy, simulation and city builder game developed by 3Division and published by Hooded Horse. Released on June 20th 2024 has received 21,602 reviews of which 19,724 were positive and 1,878 were negative resulting in a rating of 8.9 out of 10. With 1,961 concurrent players in the last 24 hours, the game currently holds the #4 spot among the most played moddable games.
8.9
19,724
1,878
1,961
players
5. The Elder Scrolls V: Skyrim
EPIC FANTASY REBORN The next chapter in the highly anticipated Elder Scrolls saga arrives from the makers of the 2006 and 2008 Games of the Year, Bethesda Game Studios. Skyrim reimagines and revolutionizes the open-world fantasy epic, bringing to life a complete virtual world open for you to explore any way you choose. The Elder Scrolls V: Skyrim is a open world, rpg and fantasy game developed by Bethesda Game Studios and published by Bethesda Softworks. Released on November 10th 2011 has received 316,940 reviews of which 300,631 were positive and 16,309 were negative resulting in an impressive rating of 9.4 out of 10. With 1,630 concurrent players in the last 24 hours, the game currently holds the #5 spot among the most played moddable games.
9.4
300,631
16,309
1,630
players
6. The Elder Scrolls IV: Oblivion® Game of the Year Edition
The Elder Scrolls IV: Oblivion® Game of the Year Edition presents one of the best RPGs of all time like never before. Step inside the most richly detailed and vibrant game-world ever created. With a powerful combination of freeform gameplay and unprecedented graphics, you can unravel the main quest at your own pace or explore the vast... The Elder Scrolls IV: Oblivion® Game of the Year Edition is a rpg, open world and fantasy game developed by Bethesda Game Studios and published by Bethesda Softworks. Released on June 16th 2009 has received 49,252 reviews of which 46,991 were positive and 2,261 were negative resulting in an impressive rating of 9.4 out of 10. With 1,574 concurrent players in the last 24 hours, the game currently holds the #6 spot among the most played moddable games.
9.4
46,991
2,261
1,574
players
7. Car Mechanic Simulator 2021
Work your way to a service empire. Get your hands dirty in a highly realistic simulation game that pays major attention to details. Pay a visit to a new Auction house and buy cars in various conditions. Expand your range of services by investing in a new work space and equipment. Car Mechanic Simulator 2021 is a simulation, automobile sim and sandbox game developed by Red Dot Games and published by PlayWay S.A.. Released on August 11th 2021 has received 28,896 reviews of which 27,723 were positive and 1,173 were negative resulting in an impressive rating of 9.4 out of 10. With 1,563 concurrent players in the last 24 hours, the game currently holds the #7 spot among the most played moddable games.
9.4
27,723
1,173
1,563
players
8. Blade and Sorcery
Blade & Sorcery is a built-for-VR medieval fantasy with full physics driven melee, ranged and magic combat. Become a powerful warrior, ranger or sorcerer and devastate your enemies. Blade and Sorcery is a vr, swordplay and moddable game developed and published by WarpFrog. Released on June 17th 2024 has received 56,980 reviews of which 55,088 were positive and 1,892 were negative resulting in an impressive rating of 9.5 out of 10. With 747 concurrent players in the last 24 hours, the game currently holds the #8 spot among the most played moddable games.
9.5
55,088
1,892
747
players
9. Beat Saber
Beat Saber is a VR rhythm game where you slash the beats of adrenaline-pumping music as they fly towards you, surrounded by a futuristic world. Beat Saber is a vr, rhythm and music game developed and published by Beat Games. Released on May 21st 2019 has received 74,429 reviews of which 71,160 were positive and 3,269 were negative resulting in an impressive rating of 9.4 out of 10. With 597 concurrent players in the last 24 hours, the game currently holds the #9 spot among the most played moddable games.
9.4
71,160
3,269
597
players
10. Fallout 3: Game of the Year Edition
Prepare for the Future™ With Fallout 3: Game of the Year Edition, experience the most acclaimed game of 2008 like never before. Create a character of your choosing and descend into an awe-inspiring, post-apocalyptic world where every minute is a fight for survival. Fallout 3: Game of the Year Edition is a open world, rpg and post-apocalyptic game developed by Bethesda Game Studios and published by Bethesda Softworks. Released on December 17th 2009 has received 50,177 reviews of which 40,709 were positive and 9,468 were negative resulting in a rating of 8.0 out of 10. With 481 concurrent players in the last 24 hours, the game currently holds the #10 spot among the most played moddable games.
8.0
40,709
9,468
481
players
Best deals on moddable games on Steam
Discover fantastic savings with the best discounts on a variety of moddable games available on Steam right now, updated on April 19th 2025. Looking for even more deals? Use the search filters to explore a wider range of discounted moddable games.
1. Ashes of the Singularity: Escalation
A massive-scale real-time strategy game where you command entire armies on a dynamic battlefield. Conquer multiple worlds across several single-player campaigns; or play with your friends in multiplayer combat. Ashes of the Singularity: Escalation is a rts, base-building and pvp game developed by Stardock Entertainment and Oxide Games and published by Stardock Entertainment. Released on November 10th 2016 has received 4,742 reviews of which 3,530 were positive and 1,212 were negative resulting in a rating of 7.3 out of 10. Featuring a massive 94% discount, this game currently holds the #1 spot in the best deals for moddable category.
7.3
3,530
1,212
-94%
29.17€
1.75€
2. 112 Operator
Manage emergency services in any city in the world! Take calls and dispatch rescue forces. Handle difficult situations, now depending on the weather, and traffic. Help the citizens through cataclysms and natural disasters, becoming a better emergency number operator every day! 112 Operator is a simulation, realistic and casual game developed by Jutsu Games and published by Games Operators. Released on April 23rd 2020 has received 6,469 reviews of which 5,790 were positive and 679 were negative resulting in a rating of 8.7 out of 10. Thanks to its incredible 91% discount, this game is now the #2 best deal in moddable games.
8.7
5,790
679
-91%
20.67€
1.86€
3. Fallout: New Vegas
Welcome to Vegas. New Vegas. Enjoy your stay! Fallout: New Vegas is a open world, rpg and post-apocalyptic game developed by Obsidian Entertainment and published by Bethesda Softworks. Released on October 21st 2010 has received 225,222 reviews of which 216,413 were positive and 8,809 were negative resulting in an impressive rating of 9.5 out of 10. Thanks to its incredible 77% discount, this game is now the #3 best deal in moddable games.
9.5
216,413
8,809
-77%
10.17€
2.34€
4. Airport CEO
Build and manage an international airport! Airport CEO is a flight, resource management and moddable game developed and published by Apog Labs. Released on March 04th 2021 has received 7,595 reviews of which 6,361 were positive and 1,234 were negative resulting in a rating of 8.2 out of 10. Currently offered at a significant 72% discount, this title has earned the #4 position in the best deals for moddable games.
8.2
6,361
1,234
-72%
24.39€
6.83€
5. Car Mechanic Simulator 2021
Work your way to a service empire. Get your hands dirty in a highly realistic simulation game that pays major attention to details. Pay a visit to a new Auction house and buy cars in various conditions. Expand your range of services by investing in a new work space and equipment. Car Mechanic Simulator 2021 is a simulation, automobile sim and sandbox game developed by Red Dot Games and published by PlayWay S.A.. Released on August 11th 2021 has received 28,896 reviews of which 27,723 were positive and 1,173 were negative resulting in an impressive rating of 9.4 out of 10. Currently offered at a significant 67% discount, this title has earned the #5 position in the best deals for moddable games.
9.4
27,723
1,173
-67%
24.15€
7.97€
6. Workers & Resources: Soviet Republic
Build a soviet republic from an impoverished country into a rich industrial superpower in a city builder with intricate production chains and a fully simulated global economy. Manage the lives of your citizens from education to work and party loyalty to criminal activity. Workers & Resources: Soviet Republic is a strategy, simulation and city builder game developed by 3Division and published by Hooded Horse. Released on June 20th 2024 has received 21,602 reviews of which 19,724 were positive and 1,878 were negative resulting in a rating of 8.9 out of 10. Currently offered at a significant 65% discount, this title has earned the #6 position in the best deals for moddable games.
8.9
19,724
1,878
-65%
40.40€
14.14€
7. The Elder Scrolls V: Skyrim
EPIC FANTASY REBORN The next chapter in the highly anticipated Elder Scrolls saga arrives from the makers of the 2006 and 2008 Games of the Year, Bethesda Game Studios. Skyrim reimagines and revolutionizes the open-world fantasy epic, bringing to life a complete virtual world open for you to explore any way you choose. The Elder Scrolls V: Skyrim is a open world, rpg and fantasy game developed by Bethesda Game Studios and published by Bethesda Softworks. Released on November 10th 2011 has received 316,940 reviews of which 300,631 were positive and 16,309 were negative resulting in an impressive rating of 9.4 out of 10. Currently offered at a significant 57% discount, this title has earned the #7 position in the best deals for moddable games.
9.4
300,631
16,309
-57%
14.91€
6.41€
8. 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 is a sandbox, moddable and multiplayer game developed by Facepunch Studios and published by Valve. Released on November 29th 2006 has received 1,150,066 reviews of which 1,113,171 were positive and 36,895 were negative resulting in an impressive rating of 9.6 out of 10. Currently offered at a 40% discount, this title has earned the #8 position in the best deals for moddable games.
9.6
1,113,171
36,895
-40%
9.99€
5.99€
Free moddable games on Steam
Check out this fantastic list of free-to-play moddable games you can enjoy on Steam right now, updated on April 19th 2025. Looking for even more free titles? Use the search filters to explore a wider range of free to play moddable games.
1. 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 is a dwarf, simulation and software game developed and published by The DFHack Team. Released on April 13th 2023 has received 692 reviews of which 687 were positive and 5 were negative resulting in an impressive rating of 9.2 out of 10. With 258 active players enjoying it for free, this strategy game has reached the #1 spot among the top free moddable games on Steam.
9.2
687
5
258
players