Poly Bridge

The third installment in a series of puzzle-simulation games tasking us with designing and building bridges. Poly Bridge 3 features an expansive campaign, a sandbox mode and custom mod tools support.

New levels, new mechanics, and a custom deterministic physics engine. Relax to the soothing new soundtrack as you try, and retry, to keep your bridges standing long enough to get to the other side!

Unleash your engineering creativity with an engaging and fresh bridge-building simulator with all the bells and whistles. Enjoy hours of physics-based puzzle solving in the Campaign and then jump in the Sandbox to create your own bridge designs and puzzles. Challenge friends and the rest of the Steam Workshop community to solve your puzzles and download more levels submitted by other players.

In the toughest motoring expedition in the universe, you and your friends will build your own vehicles to cross a dangerous wasteland. Explore, crash horribly, use your wits to build a better rig, and get as far as you can with whatever spare parts you find on your way.

Create and destroy on an unimaginable scale... with a space simulator that merges real-time gravity, climate, collision, and material interactions to reveal the beauty of our universe and the fragility of our planet. Includes VR support for HTC Vive, Oculus Rift+Touch, and Windows Mixed Reality.

Line Rider is an internet game. Versions are available for Microsoft Silverlight and for Flash. It was originally created by Boštjan Čadež (also known as "fsk"), a Slovenian student. Originally appearing on DeviantArt on September 23, 2006, Line Rider quickly became an internet phenomenon.

Infinifactory is a sandbox puzzle game by Zachtronics, the creators of SpaceChem and Infiniminer. Build factories that assemble products for your alien overlords, and try not to die in the process. LIKE SPACECHEM… IN 3D! Design and run factories in a first-person, fully 3D environment. HISTOGRAMS ARE BACK! Optimize your solutions, and then optimize them more when you see how much better your friends did. VISIT EXOTIC ALIEN LOCALES! Explore a story-driven campaign with 30+ puzzles, audio logs, and more. BLOCKS THAT MOVE! Go beyond the campaign and push the limits of Infinifactory’s next-generation block engine in the sandbox. STEAM WORKSHOP INTEGRATION! Create, share, and play custom puzzles on Steam Workshop.

A 3D pet simulation where you raise your own personal hive of mutating dogs, physically simulated all the way down to their guts! Wobbledogs is a casual and chill sandbox for players of all ages who want to care for their very own virtual pets in a surprising, unique, and stress-free environment.

Build your own vehicles or download one of more than 10,000 vehicles from the workshop and enjoy the dynamic driving and destruction physics of Brick Rigs!

SimpleRockets was released in 2013 for mobile and a ton of work was put into getting it ready for PC and Mac. It was inspired by KSP, and it offers a simpler 2D experience for building rockets and exploring space with realistic orbital mechanics.

Pixel Puzzles: Japan combines traditional jigsaw puzzle style gameplay with light video-game interactivity. As you build puzzles your monk will gain higher consciousness states. The higher the level of your monks concentration the bigger the puzzle you can attempt. All hand drawn in a beautiful Japanese aesthetic, Pixel Puzzles: Japan is perfect for puzzlers and gamers alike.

Become a motorbike mechanic and build your empire. Buy, repair, renovate, and create your own dreamed custom motorcycle.

Project Highrise is a Tower Building Business Management Simulator. Managing your sky-scraping empire will be no easy task – growth will require a mastery of the various interlocking systems that are required for each type of establishment to thrive. Office workers will want to grab a quick lunch or coffee. Restaurants and their patrons will value location and convenience. Throw in the challenges of implementing utilities, ensuring easy transport and navigation around the building, and of course managing your finances, and it’s clear that success in Project Highrise will be no easy task.