Games like Poly Bridge 3

Build physically simulated rovers to transport awkwardly shaped cargo across the rugged terrain of Mars. Earn funds, unlock new parts, and use your ingenuity to help the Martians establish a new home. Playable solo or in online co-op!

Space Engineers 2 is a playable Early Access Alpha sandbox focused on engineering, exploration, and colonization in a fully destructible universe. Design and build ships, stations, and planetary bases while uncovering the story of Miro and Ivan Sokol. Help shape the future of the Almagest system.

Build and fly your own airplane! Complete missions to earn money, upgrade your plane, and discover new locations in an open world.

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!

Stack your tower as high and as fast as you can in Skyblocker, an infinitely fun and replayable physics-based 3D puzzle game. Battle the elements (and gravity), compete for a place on the online leaderboards, unlock tons of cosmetics and unique levels, or relax in Zen mode.

Build and fly realistic aircraft. Use free-form fuselage and wing editor tools and tune your engines to recreate aircraft from any era or design your own.

As the leader of a company specialized in restoring sites devastated by natural disasters, use your construction machinery to restart the local industry. Clear debris and faulty equipment, rebuild roads and bridges damaged by weather, and much more!

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!

In House Builder 2, you build your dream structures in a vibrant, open-world low-poly environment! Purchase materials for your work, load them up, and head off to diverse tasks in the ultimate building adventure!

Online voxel sandbox where you can build anything imaginable. Forget simple cubes – sculpt slopes, curves, and structures of any size with many realistic materials. Your imagination is the only limit!

Raise a city from the ground up and transform it into a thriving metropolis with the most realistic city builder ever. Push your creativity and problem-solving to build on a scale you've never experienced. With deep simulation and a living economy, this is world-building without limits.

Developed by the creator of the original Kerbal Space Program, KitHack Model Club is a physics-based model building sandbox that offers limitless freedom for you and your friends. Design, build, battle, fly (and crash!) your very own RC vehicles, or experiment with over 2,400 ready-made vehicles!

Build your dream railroad across a huge open world! You can build tracks and stations, drive detailed locomotives, and transport goods to earn money and experience. Play exciting Online Multiplayer sessions with your friends or create your very own sandbox!

3D platformer with a portal gun! Solve puzzles, exciting levels, become a master of portal travel.

Dive into a factory-building game with the focus on just that – building huge space factories! Design sprawling multi-level factories and satisfying production lines without limits. Tackle progressively challenging automation goals at your own pace, without the threat of enemies.

Build impressive skyscrapers pixel-by-pixel, and protect them from the harsh realities of nature. Each pixel is physically simulated to interact with earthquakes, firestorms, blizzards, and tsunamis. Protect your skyline and expand your territory in this relaxing (yet challenging) sandbox builder.

Embark on your creative journey of vehicle design, as you create and operate vehicles to survive this dangerous open world. Anymaker is a detailed and technical vehicle builder and survival game. Design your chassis, build your engine, connect components, and travel into the unknown.

Adorable spider chaos! Swing around the house, weave crazy structures, play with physics-based objects, and pull off chores with nothing but your webs and your wits in this madcap sandbox adventure.

Team up as two quirky construction workers in this fun 2-player co-op platformer! Carry a fragile glass window through colorful levels filled with challenges. Communicate and coordinate to dodge obstacles and solve puzzles. Can you finish the job without breaking the glass?

Myth of Empires is a multiplayer war sandbox game featuring a high degree of freedom and multiple civilizations. Players must survive, craft, create, and lead troops in their quest to conquer PVE or PVP territory and build their own empire. Xizhou Civilization Pack is now officially released!

a hostile interpretation of the immersive sim, where nothing is planned, and everything works

Bulwark blends casual and creative building elements with touches of strategy and exploration. It's an experimental mix of genres that can be enjoyed casually or as an epic conquest featuring naval units, air units, and fortresses.

A HARDCORE physics-based 1-4 player co-op RAGE GAME about getting home after a wild night out. It was a fun night! Now grab your buddies and walk home. IF YOU REMEMBER HOW.

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? 

A physics sandbox built on real chemistry. Drop 674 materials into a falling-sand world and watch them react, burn, freeze and explode. Then wire circuits, test wings in a wind tunnel, or split light through lenses — alone or with friends online.

Pilgor's baaack! Gather your herd and venture forth into Goat Simulator 3; an all-new (at least on Steam), totally realistic, sandbox farmyard experience. Invite up to three friends in local or online co-op, create carnage as a team, or compete in mini-games and then not be friends anymore.

Stack blocks on an unstable semicircular base in a turn-based physics game where every material, angle, and tap matters. Build alone, pass the controls in local matches for 2–4 players, or face a rival online through Steam.

Dive into a sandbox full of action and customization! Choose from different game modes like deathmatch, conquest, king of the hill, zombie survival and many more. Create your own scenarios and content in the easy to use in-game editors or use one of the 50k+ workshop items from other players...

A VR sci-fi sandbox game where you can put your skills to the test to build crazy inventions, with mechanics analogous to real-life electrical engineering.

RAILGRADE is the train RTS game! Construct dense vertical railroads, build cities, construct vast factory chains with train automation! Restore an off world colony's economy all in the intense story driven campaign or relaxing sandbox mode!

In Rail Route, you will design, construct, upgrade, and automate your railway network in one of the many maps based on real-life cities worldwide. Dispatch the trains to make the traffic flow and the network grow!

Speed around loops, dart through train crossings, drift around helter skelters, and unleash wacky weaponry in this modern take on classic top-down multiplayer racing games such as Micro Machines and Mashed. The twist? You build the track.

Plank Builders is a captivating yet relaxing construction game. Magical marbles have the ability to make stuffed toys come alive. Together with the monkeys, the player can plan and construct different buildings made out of wooden planks. Find all the monkeys and help them to come alive too!

In this 2004 classic originally released by Atari games, you will navigate 12 sky-high courses. Each course is fraught with different obstacles that will block your path, slide your marble off course, or blow them right into the bottomless void below.

Make music & solve puzzles with physics at the same time. Draw vines, guide dewdrops through vibrant levels, unlock new sounds, and create your own beats in a relaxing musical sandbox.

Plan, design, build, and decorate your dream house in an open-world. Smash walls, sketch your layout, then build and decorate every inch—inside and garden. In an open world, tackle each renovation solo or with up to 4 friends. Pick up that hammer and start creating - Your dream house is waiting!