Games like Garry's Mod on Steam
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Survisland / 实境求生
Survisland is a super hardcore sandbox survival game that pays great attention to restoring the real survival experience. The character has rich and realistic actions and reactions to , and the process logic of making props is no different from reality.
Notruf 112 | Emergency Call 112
Emergency Call 112 – The Fire Fighting Simulation is an exciting, fully detailed simulation of the eventful life of a big city fire department. It was developed in cooperation with and modelled on the fire brigade of Mülheim, Germany. Mülheim has one of the largest and most modern fire stations in Europe.
Citadelum
Citadelum is a city builder set in legendary Ancient Rome. Build your own settlement, gather resources and evolve it into a magnificent city. Explore the world, trade and lead your mighty legions in epic tactical battles. Earn the favor of the Gods or challenge them, if you dare.
Wooden Battles
Build a wooden fort, place your units, watch the mayhem!
Landfall Archives
Break into the Landfall Archives to steal and play previously unreleased games, demos, interactive slide shows, and even an unreleased version of Totally Accurate Battle Simulator from 2017!
Demolish & Build 2017
Become a boss of Demolition & Build company. Destroy small wooden huts and huge concrete buildings. Manage your workers. Invest earned cash in your own land properties and rent them for profit in open sandbox world. Use various hand tools, buy new machines and customize their parts.
Park Beyond
Park Beyond is a theme park simulation game that gives you the freedom to create and manage the Parks of your Dreams! Whether you love to manage finances and visitor experience, or just create fun and cozy parks, the game has something in store just for you!
Construction Simulator 2015
In Construction Simulator 2015, you take the controls of 16 realistic construction machines made by LIEBHERR, STILL and MAN with high-quality 3D graphics.
Farm Together
Grow your own farm all by yourself, or cooperate with your friends in this unique, relaxing farming experience!
Rec Room
Rec Room is the best place to build and play games together. Party up with friends from all around the world to chat, hang out, explore MILLIONS of player-created rooms, or build something new and amazing to share with us all.
Fling to the Finish
Fling to the Finish is a cooperative racing game where teammates are tethered together by a stretchy elastic rope. Get up close and personal with your partner to maneuver two characters bouncing, rolling, and flinging their way to the finish line!
Learn to Fly 3
Build your spaceship from scratch, earn funds and invest them into building a bigger, better spaceship as you try and fly your way up to space!
StarMade
The ultimate space sandbox. Participate in epic fleet battles, form alliances, strive to dominate entire galaxies and harness the universe’s resources for your industrious empire or the destruction of others. Customise your experience, the universe is yours!
The Orville - Interactive Fan Experience
Step aboard the USS Orville (ECV-197), the Planetary Union's finest mid-level exploratory class cruiser. With every room on every deck recreated with painstaking accuracy, you are free to explore the ship at your leisure and engage in all manner of shenanigans!
Mount Your Friends 3D: A Hard Man is Good to Climb
Join in the great simulated sportslike experience of friend mounting! Assemble a team and climb your way to the top! Mount Your Friends 3D brings mounting to the third dimension, with the same classic innuendo that made you slightly uncomfortable back in the day.
TerraTech
TerraTech is an open-world, sandbox adventure game, where you design and build your own creations through a mix of crafting, combat and discovery. Design vehicles from a huge library of blocks. Scavenge, craft and buy new parts to survive and become the ultimate planetary prospector.
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.
RollerCoaster Tycoon®: Deluxe
One of the best games from acclaimed Tycoon series, with well designed gameplay mechanics, appealing graphics, and really high re-playability value. There’s no limit to what you can create so design and build the most thrilling roller coaster the world has ever seen!
Granny Simulator
In Granny Simulator there are two players, a feeble old grandmother and her lovely grandson. The grandmothers objective is to complete her every day routine while the grandson utilizes uncanny violence and pure brutality to stop her.
Castle Story
Castle Story is a creative voxel-based strategy game in which you can build castles one brick at a time using an army of little creatures called Bricktrons. Design and build your own castles, expand your territory in a vast landscape and defend your Bricktrons against onslaughts of hostile creatures.