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.
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Galactic Civilizations® II: Ultimate Edition
Get the complete GalCiv II saga including Galactic Civilizations II: Dread Lords, the expansion pack Dark Avatar, and the newest expansion pack Twilight of the Arnor!
Sins of a Solar Empire: Trinity®
In Sins of a Solar Empire: Trinity, you are the leader of a civilization embroiled in a galactic war, fighting for the survival of your entire race against relentless foes.
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.
Sonic Generations Collection
Celebrate 20 years of Sonic in an all new adventure that delivers a definitive experience to Sonic fans new and old!
Dungeon Defenders
Create a hero from one of four classes to save Etheria in this 4-player coop Tower Defense Action-RPG. Includes Steam exclusive Portal gun & TF2 familiars!
Supreme Commander: Forged Alliance
The last days of man are at hand.. Two years after the Infinite War the once great warring nations now lie in ruins, and humanity’s hope for a brighter future is nothing but a bitter memory. A new, seemingly unstoppable enemy, supported by the zealots of The Order, now seeks to eradicate mankind: UEF, Aeon Loyalist, and Cybran alike.
ARMA: Cold War Assault
Bohemia Interactive's debut game published by Codemasters as Operation Flashpoint in 2001, became genre-defining combat military simulation and the No. 1 bestselling PC game around the world and has won many international awards, including “Game of The Year” and “Best Action Game”. Over 2 million copies have been sold since its release.
Quake 4
As part of the elite Rhino Squad, you must spearhead Earth’s military invasion of a hostile alien homeworld. But, in this desperate war for humanity’s survival against an unrelenting enemy, you may discover that the only way to defeat them...is to become one of them.
Dungeons of Dredmor
Test your luck and cunning in this exciting RPG as you craft, cast, and pillage your way through Lord Dredmor's Dungeons.
Mount & Blade: With Fire & Sword
The standalone expansion for Mount & Blade! With Fire & Sword builds and expands upon the highly regarded combat system from Mount & Blade: Warband. Firearms have been introduced to the battlefield.
Darkest Hour: A Hearts of Iron Game
Developed by a team of experienced modders from the Paradox forum, Darkest Hour is a stand-alone Hearts of Iron game. The game features a mixture of short and in-depth campaigns set across the darkest chapters of the 20th century. Play from the outbreak of the Great War up until the onset of the Cold War.
Atom Zombie Smasher
The zombie apocalypse is upon us and it's up to you to evacuate everyone before they fall prey to the undead. Conduct massive rescue operations with a helping hand from snipers, artillery crews, orbital bombardments, and more.
Total War: SHOGUN 2
Total War: SHOGUN 2 is the perfect mix of real-time and turn-based strategy gaming for newcomers and veterans alike.
Sonic Adventure DX
An ancient evil lurking within the Master Emerald has been unleashed from its slumber by the devious Dr. Eggman and is on the verge of becoming the ultimate monster using the 7 Chaos Emeralds. Only Sonic and his friends are heroic enough to put a stop to Dr. Eggman and his evil minions.
Men of War: Assault Squad
Men of War: Assault Squad delivers a deeply tactical WWII experience, blending large-scale strategy with intense, hands-on combat. Fight across multiple fronts – from European countryside to Pacific jungles and command every unit and every bullet on the battlefield.
The Sims™ 3
The Sims 3: Create the perfect world with full customization at your fingertips. Refine personalities and help fulfill destinies.
MX vs. ATV Reflex
Think fast and hang on to your ride as you take independent control of the rider and take the ultimate test of mettle. Dual controls let you tear it up with death-defying tricks and high-flying freestyle action. Fight for traction and dig up the track to leave your mark.
Dragon Age: Origins - Ultimate Edition
Explore a stunning world, make complex moral choices, and engage in bone-crushing combat against massive and terrifying creatures. The Ultimate Edition includes Dragon Age: Origins, Dragon Age: Origins - Awakening and all nine content packs.
Fallout: New Vegas
Welcome to Vegas. New Vegas. Enjoy your stay!
Sid Meier's Civilization® V
Create, discover, and download new player-created maps, scenarios, interfaces, and more!
Victoria II
Carefully guide your nation from the era of absolute monarchies in the early 19th century, through expansion and colonization, to finally become a truly great power by the dawn of the 20th century. Victoria II is a grand strategy game played during the colonial era of the 19th century, where the player takes control of a country, guiding...
SimCity™ 4 Deluxe Edition
SimCity 4 Deluxe Edition includes the bestselling SimCity 4 and the all-new SimCity 4 Rush Hour Expansion Pack. Create the most massive region of cities ever, with a farming town, bedroom community, high-tech commercial center, and industrial backbone.
Alien Swarm
Co-operative multiplayer game and complete code base available for free.
Arma 2: Operation Arrowhead
Three years after the conflict in Chernarus, portrayed in the original Arma 2, a new flashpoint explodes in the Green Sea Region. Coalition forces led by the US Army are deployed to Takistan to quickly restore peace and prevent further civilian casualties.