About Principia
Principia is a physics sandbox game for building and playing interactive contraptions. Its object library includes building pieces, mechanical and electrical components, small controllable robots, and a Lua scripting object. Players can combine these elements to make vehicles, calculators, circuit-based games, or other experiments, then run them in the simulated world. The game also offers a large community library of player-created levels, from complex mechanisms to minigames. Levels can be explored and opened in the sandbox to see how they work or adapt them. Principia is open source and available on Android and desktop systems. By default it connects to a community site for shared levels, though the description says this can be changed or disabled. The game combines construction, experimentation, scripting, and community creations in one physics-based environment.
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