Base Building · Moddable games to play together

21 Base Building · Moddable games your group can play together online, including Scrap Mechanic, Age of Mythology: Retold, and 9-Bit Armies: A Bit Too Far.

All games: 21

Scrap Mechanic

Enter the creative paradise of Scrap Mechanic! Build fantastic machines, go on adventures with your friends and defend against waves of evil Farmbots in this imaginative multiplayer survival sandbox. With Scrap Mechanic’s powerful creation tools you can engineer your own adventures!

91% positive of 109,897 reviewsPlaying now: 1,375$28.99

Age of Mythology: Retold

Play as mythological Gods and smite your enemies in this award-winning, mythological Real-Time Strategy classic given new life. Wage war across timeless campaigns, fierce skirmishes, and god-powered multiplayer modes.

90% positive of 21,185 reviewsPlaying now: 3,193$29.99

9-Bit Armies: A Bit Too Far

Unleash voxel warfare in 9-Bit Armies: A Bit Too Far. Lead a modern military, build bases, unlock units, and attack in all-out war. Engage on land, sea and air in over two dozen missions, online skirmishes, or co-op. Easy to learn, a challenge to master.

80% positive of 950 reviewsPlaying now: 21$9.99

Aground Zero

The world has ended. You are deep underground, and all alone with a cheery AI companion. You will have to mine and build to survive, and search for other survivors to help you. Will you be able to reach the surface? And what will you find when you get there?

79% positive of 123 reviewsPlaying now: 1$19.99

Final Factory

Final Factory blends factory building, spaceship design, and a rich universe to explore. Build a mega factory and command a massive fleet against the hostile local aliens. Discover new technologies and unlock the secrets of an ancient civilization as you explore an infinite cosmos.

78% positive of 288 reviewsPlaying now: 5$18.99

Sapiens

Create your own prehistoric civilization and lead your tribe in a world you shape. Start with nothing, build towns and industry, and advance through thousands of years of technological breakthroughs in this intimate yet expansive colony sim.

78% positive of 2,076 reviewsPlaying now: 18$24.99

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.

97% positive of 197,010 reviewsPlaying now: 13,935$35

Age of Empires III: Definitive Edition

Lead powerful civilizations across the globe, master strategies and tactics, and relive history in co op battles—now remastered in stunning 4K and modernized gameplay.

85% positive of 37,290 reviewsPlaying now: 5,656

ICBM

ICBM is a real-time strategy game of nuclear destruction. Research new technologies, build up your nuclear stockpile and use a combination of ships, planes and missiles to strike at the heart of your opponents’ cities while keeping your population safe from harm.

91% positive of 1,657 reviewsPlaying now: 8$19.99

Per Aspera

Make Mars your own! Take control of the world’s most sophisticated AI (AMI) and terraform the surface of the Red Planet for a city-building experience on a planetary scale. Transform this barren world into a lush paradise and explore the surface for any ancient secrets that may be waiting.

75% positive of 4,116 reviewsPlaying now: 64$7.49

Mindustry

An open-ended factory management game with RTS and tower defense elements.

94% positive of 25,013 reviewsPlaying now: 878$9.99

Space Engineers: Build and Explore Together

Share a Creative or Survival world in Space Engineers, where your group turns mined resources and block-by-block ideas into ships, bases, and missions.

88% positive of 102,789 reviewsPlaying now: 4,445$19.99

CAR TUNE: Project

CAR TUNE: Project is a detailed car tuning simulator where every bolt, screw, and gear matters. Build your dream machine, fine-tune every parameter, and test it on the track.

84% positive of 584 reviewsPlaying now: 1$18.99

Evospace

Contribute to the colonization of the universe. Get and process resources, develop your technologies. Achieve complete automation and build a portal to include another planet in the chain of worlds.

83% positive of 353 reviewsPlaying now: 16$14.99

Northgard: Definitive Edition

Northgard: Definitive Edition is a critically acclaimed real-time strategy game based on Norse mythology. Lead your clan, uncover the secrets of a mysterious newfound continent and defeat your enemies to conquer the Throne!

85% positive of 54,588 reviewsPlaying now: 983$9.79

Stationeers

Stationeers puts you in control of the construction and management of a space station to run by yourself or online with your friends. Complex atmospheric, electrical, manufacturing, agriculture, and gravitational systems require your thought and management at all times!

87% positive of 8,656 reviewsPlaying now: 415$34.99

Rusted Warfare - RTS

{{An RTS inspired by the classics of the past!}} Making up for it's subpar retro graphics with fun gameplay and modern multi-threaded tech enabling huge battles to run smooth... Featuring singleplayer challenges, skirmish, sandbox, 10-player multiplayer & workshop modding.

96% positive of 6,725 reviewsPlaying now: 172$4.99

Forts

Unleash your creativity and strategic prowess in Forts, the exhilarating physics-based RTS! Design, construct, and customize imposing fortresses, bristling with devastating firepower, and blast your opponent’s buildings to rubble!

91% positive of 21,347 reviewsPlaying now: 471$14.99

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.

75% positive of 2,712 reviewsPlaying now: 40$29.99

Warlords Under Siege

Warlords Under Siege is a mix of RTS and Roguelike genre, where you build a small city and defend it against continuous waves of enemies. Improve your assortment of weapons with each playthrough, unlocking new possibilities to beat the ever-increasing threat.

75% positive of 437 reviewsPlaying now: 0$9.99

Kingdom Wars 2: Definitive Edition

An intense real-time strategy game set in a dark fantasy world of Orcs, Elves and Dragons. Kingdom Wars 2 combines the best of Zombie survival and crafting with complex fast-paced city building. Fight massive siege battles that turn beautiful landscapes into gory blood-soaked battlefields.

66% positive of 348 reviewsPlaying now: 0$9.99