Brick Rigs

Brick Rigs is a physics sandbox built on a brick-construction system, where every vehicle is assembled stud by stud and behaves accordingly under collision. The build palette is broad enough to cover almost any vehicle a player wants to try — dragsters, fire engines, forklifts, helicopters, planes, trains, ships, tanks — and the limits are mostly imposed by the physics engine's willingness to keep your contraption in one piece at speed.

The construction half is one game; the destruction half is another. Vehicles deform, break apart and shed components on impact, so part of the fun is engineering for survival and the other part is engineering for spectacular failure. The Steam Workshop already hosts more than 200,000 user-built creations — competently designed delivery trucks alongside elaborate replicas of real-world machines and the kind of physics-defying nonsense the genre runs on.

Multiplayer is where the sandbox opens up. You can organise races, demolition derbies, dogfights, emergency-services roleplay or whatever loose ruleset a lobby agrees on, and the rules are entirely player-driven. Servers tend to dedicate themselves to specific play styles — competitive racing, cooperative city scenarios, freeform destruction — and the underlying systems are flexible enough to support all of them with the same toolkit.