Games like Universe Sandbox on Steam
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Total Tank Simulator
Commander in the ranks. Soldier at heart. Choose a faction and deploy and command your army into massive physics-driven WWII battles to the last man standing. Destroy everything on sight with an insane amount of units that will behave tactically.
Interstellar Transport Company
Build a galactic transportation empire and supply humanity with everything it needs to colonize the stars. In this sci-fi logistics simulator, grow your company from a local transport agency into an interstellar logistics behemoth! Singleplayer, vs AI, and online multiplayer.
Size Matters
You play as a scientist who is shrinking every second in a race against time! Find all the ingredients and formulas scattered around the laboratory, which are necessary for producing the life-saving antidote. But beware, your time is very precious.
Bee Island
Take control of the hive and protect it from enemies. Build factories and defence, research technologies and, if necessary, use nuclear weapons, but do not let the enemies harm the queen!
Evochron Mercenary
The life of an independent mercenary is rarely without excitement. Your spacecraft awaits and your adventure begins in the Sapphire star system.
RealFlight Evolution
RealFlight® is the industry-leading flight simulator for radio-controlled airplanes, helicopters, and drones. Fly more than 300 hyper-realistic vehicles in an immense, open world right from your desktop. This RC classic is a must-have tool for flight enthusiasts of all skill levels!
Breachway
Explore the galaxy in this deckbuilding, sci-fi roguelike where ship upgrades and crew management are key to your survival. Optimize resource generation, engage in intense turn-based battles, and take on ever-growing threats as you seek out The Signal.
Tin Can
You've barely managed to escape your exploding spaceship. Now in an old escape pod, you hurtle through space at the mercy of the cosmos. With no knowledge of the pod’s complex systems, your life depends on a technical manual and your own wits. How long can you survive?
Empyrion - Galactic Survival
Build and explore in a true space sandbox survival adventure. Construct mighty capital vessels, sprawling planetary settlements, and vast space stations in your galactic journey to discover the mysteries of Empyrion!
Brick Rigs
Build your own vehicles or download one of the more than 200,000 creations already uploaded to the Workshop and experience the dynamic driving and destruction physics of Brick Rigs!
Automation - The Car Company Tycoon Game
Make your dream cars a reality with Automation’s unparalleled car and engine design tools. Gain a competitive edge through smart engineering and business decisions to help you build an automotive empire. Will you become an industry leader, or just a footnote in automotive history?
X4: Foundations
Your journey to building a vast space empire begins behind the controls of a single ship. Explore the stars, trade goods, fight battles, build stations, buy and equip ships, and command fleets in a living, fully simulated universe that reacts to your decisions.
Sunshine Heavy Industries
Welcome to Sunshine Heavy Industries! As the new spaceship engineer, solve increasingly tricky design puzzles with your own personal style. Manage customer demands, juggle budget and ship performance, and survive the questionable decision making skills of your business partner.
Space Engineers 2
The ultimate space sandbox, reimagined. Unleash your creativity with powerful building tools, explore the mysterious Almagest system, and uncover its captivating story. Join the Early Access and shape the future of space engineering!
Planet Coaster 2
Build and customise thrilling roller coasters and incredible water slides, manage the ultimate theme park experience, and share your epic creations. Are you ready to ride the wave?
NEBULOUS: Fleet Command
Take command of your hand-tailored fleet of space warships and use realistic radar, electronic warfare, advanced movement controls in 3D space, and precision targeting to outmaneuver and outwit your opponents in a simulation-heavy tactical space game like no other.
Terra Firma
Play god and create your own world in this complex simulation. Plate tectonics, wind and water erosion and plant life all develop and interact to produce a world that is viewable from a single tree to kilometres across.
Instruments of Destruction
Crash through walls and tear down buildings in Instruments of Destruction, a vehicle-action game featuring advanced physics-based demolition. Pilot 130+ unique vehicles across scores of challenge-packed missions or design your own contraptions and wreck highly-interactive sandbox worlds.
Junkyard Simulator
Did you ever wish to work in a junkyard? Now you can, with Junkyard Simulator. They are many roads leading to success - whichever you take depends on your decisions.
X-Plane 11
The future of flight simulation is now! X-Plane 11 is the detailed, realistic, and modern simulator you’ve been waiting for. Intuitive user interface, 3-D cockpits, new effects, 3-D sound, living airports and world-wide scenery.
The Enjenir: The Engineering Physics Building Simulator
Put your engineering and problem solving skills to the test in this sandbox physics building game! Enjoy the freedom of completely gridless 3D sandbox building combined with hilarious ragdoll third person controls, offering a truly unique and hilarious "Enjeniring" experience!
ΔV: Rings of Saturn
A physics-based mining sim, set in the thickest debris field in Sol. Every action has a reaction, lasers are invisible without a medium, and your thrust is a potent weapon. Find trade, adapt your equipment to your playstyle, hire a crew to help. Unravel the mysteries of the rings, or just get rich.
Animal Revolt Battle Simulator
The ultimate physics-based, sandbox battle simulator where you can create funny battles between all sorts of ragdoll creatures! You can also make your own monsters with the unit creator or even join the battles yourself in the first-person mode!