Games like Homebrew: Vehicle Sandbox

"Main Assembly" is a robot construction and design game that allows players to build robots of any shape or size, program their movements with visual programming, and test them in custom-built obstacle courses. Players can also collaborate with others to create shared worlds and compete in bot challenges. The game offers a "Starter Collection" of combat-ready machines for instant brawling.

"Dream Car Builder" is a game that allows you to design and race your own cars, with a focus on creating the perfect frame and steering system. The game features realistic soft body physics, a car editor, single player racing on procedurally generated tracks, and a sandbox mode for building cars without limitations. Users can also create and share their own vehicles, tracks, and maps. This game is not for the faint of heart, as it requires an understanding of complex designs and may require reading of documentation.

"Trailmakers is a physics-based vehicle construction sandbox game, where you can build and pilot cars, planes, and boats in a variety of environments. The game features a campaign mode, rally mode to learn building, and sandbox maps for creative building. Multiplayer mode supports up to eight players for cooperative or competitive gameplay. Use various weapons and blocks to build and customize your ultimate combat vehicle."

"SimplePlanes" is a sandbox-style construction simulation game that allows players to build and fly their own aircraft. With realistic physics and an intuitive building system, players can design planes that range from simple gliders to complex military jets. The game also features a variety of challenges and missions to complete, as well as online sharing capabilities for custom-built planes.

"KitHack Model Club is a simulation game that allows 1-2 players to build and customize RC vehicles in a multiplayer setting. The game features physics-based mechanics, encouraging players to make every design decision count. With numerous parts, paint, and decals to choose from, create and race your unique vehicles in this ultimate model-building platform."

Scrap Mechanic is a multiplayer survival sandbox game that lets you build and create using powerful tools. Crash-landed on a strange planet, you must defend against hostile Farmbots and engineer your own adventures. Regular updates bring new content and optimizations to this imaginative, robot-filled world.

Stormworks: Build and Rescue is a physics-based game that allows players to design, build, and pilot their own sea-rescue vehicles. Players must use their problem-solving skills to complete missions and rescue citizens in various challenging scenarios. The game also features a sandbox mode for open-ended creative play.

"Besiege" is a physics-based medieval siege warfare simulation game. Construct and control trebuchets, ballistas, and other war machines to destroy fortresses, conquer kingdoms, and complete various objectives. With a range of materials and design options, players can build and test their engineering skills in this creative and destructive sandbox.

"Automation: The Car Company Tycoon Game" is a simulation game that allows players to design and manufacture their own cars. Players start by building their own car company, and must manage various aspects such as research, development, design, production, and marketing. The game features detailed car customization, including engine and transmission design, and allows players to compete in a dynamic market against AI-controlled competitors.

"Sprocket" is a tank design game that allows players to create and customize tanks using a dedicated designer. The game presents realistic armor mechanics and covers tank design challenges from WW1 to the late stages of WW2. Players can design hulls, turrets, armor, and cannons by setting thicknesses, shapes, and angles, while considering the trade-offs between space, weight, and firepower. Currently, tutorials are lacking, so a solid understanding of tanks is recommended .