Principia app for iPhone and iPad
Welcome to the world of Principia.
Solve puzzles using the laws of physics. Help the robot get to the goal by building contraptions, bridges and vehicles.
Open up the sandbox editor and use over 190 unique objects to create anything from a simple teeter totter to a working calculator. Use the advanced electronics system to create your own games. Upload your creations to the community website or download creations by others.
Join thousands of other players and compete in the weekly Building Contests!
Play freely in the Adventure mode, explore worlds and progress by gathering resources and constructing objects that can be used to build anything you can imagine.