Simulation · Building · Moddable games to play together

42 Simulation · Building · Moddable games your group can play together online, including Scrap Mechanic, Age Of Warbots, and Farming Simulator 25.

All games: 24

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 Warbots

A sandbox battle simulator game where you can build your own shape-shifting warbots, program their AI, and watch them smash each other up on the battlefield! Join the battles yourself by taking control of the warbots! Use Steam Workshop to check out warbots created by players from around the world!

83% positive of 167 reviewsPlaying now: 7$9.99

Farming Simulator 25

Farming Simulator 25 invites you to join the rewarding farm life, single-handedly or cooperatively in multiplayer. This Farm is Your Farm!

87% positive of 41,341 reviewsPlaying now: 17,235$29.99

Robot Rumble 2

Build your robot. Battle your robot. Robot Rumble 2 is the premier robot combat building simulator, where you create your robot from real-world inspired parts, then drive it in the arena to defeat other robots.

80% positive of 301 reviewsPlaying now: 37Free

Archean

Gather resources, craft components, build vehicles, and code their logic in a physics-driven engineering sandbox and full scale space sim.

86% positive of 245 reviewsPlaying now: 13$19.99

WE ARE FOOTBALL 2024

Welcome to WE ARE FOOTBALL 2024! Dive into the world of football like never before. Choose an existing club or start your own. Manage either men or women, lead your club to new heights, and become the next manager legend!

78% positive of 760 reviewsPlaying now: 38$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

Trainz Railroad Simulator 2022

Drive, Explore, Operate and Create the railroad of your dreams - and now you can collaborate in real time with Multiplayer Surveyor! TRS22 showcases a range of high quality routes, sessions and trains to drive, plus all the scenery you need to make your own masterpiece.

74% positive of 1,262 reviewsPlaying now: 251$39.99

Trainz Plus

Drive, Explore, Operate and Create the railroad of your dreams - and now collaborate in real time with Multiplayer Surveyor! And with Trainz Plus memberships, you get more content, more features and the latest Trainz has to offer!

78% positive of 136 reviewsPlaying now: 21$7.99

RaceLeague

Car racing game with soft-body damage, race track builder, track database and multiplayer

71% positive of 273 reviewsPlaying now: 4$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: 11,396$35

Fireworks Mania - An Explosive Simulator

FIREWORKS MANIA is a small casual explosive simulator game where you play around with fireworks, create beautiful firework shows or just blow stuff up.

97% positive of 7,581 reviewsPlaying now: 60$14.99

NIMBY Rails

Design and run your own railroads for the real world. Solve global transportation dilemmas. Unleash your inner railway engineer and transit policy manager.

89% positive of 2,248 reviewsPlaying now: 146$19.99

Winter Resort Simulator 2

Winter Resort Simulator 2 is the extensive simulation of a ski area with all its exciting technical facilities and vehicles.

83% positive of 1,354 reviewsPlaying now: 28$24.99

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

Besiege

Besiege is a physics building game about constructing medieval machines to annihilate armies, obliterate castles and overcome challenging obstacles. Conquer the campaign or skirmish with friends in Multiplayer!

95% positive of 48,185 reviewsPlaying now: 169$14.99

Imperiums: Greek Wars

Unique combination of turn-based 4X and historical grand strategy with a mythological twist. Explore the ancient world and build a world leading civilization. Survive, expand, conquer... and win!

82% positive of 456 reviewsPlaying now: 14$29.99

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

Railroad Corporation

Relive the pioneering spirit of the Golden Age of Steam by establishing your own railroad empire across 19th century North America. Bring settlements together, produce and trade goods and develop new technologies to stay ahead of the competition. Want more? RAILROAD CORPORATION 2 Out Now!

75% positive of 1,098 reviewsPlaying now: 22$35.99

Parkitect

Parkitect is a business simulation game that charges you with the construction and management of theme parks! Bringing back the best of classic theme park games with many new features and content on top. Now supports online co-op with up to 8 players!

94% positive of 6,836 reviewsPlaying now: 129$11.99

Garden Paws

You have inherited your grandparents farm as they set off to travel the world. Work with Frank at the local construction shop to finish off the final touches on your new home. Aid Frank and Mayor Wilson in building up the town so it may reach it's full potential.

90% positive of 1,894 reviewsPlaying now: 10$19.99

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

Rolling Line

Build your own model railway tracks and scenery or explore pre-made maps, including 1000s of player-made maps and mods on the Steam Workshop! Play solo and in multiplayer, both in virtual reality and on PC!

96% positive of 2,483 reviewsPlaying now: 73$24.99