Welcome to Principia
Principia is a physics-based sandbox game. Build and play advanced contraptions, circuiting, minigames, robot adventures and more. Open source, free and available for Windows, Linux and Android, download it today.
This site, principia-web, is the new community site for Principia. When you have installed Principia, enjoy the levels others have created, and register in order to upload your own levels and interact with the community.
Also check out...
And the Official community site archive, an archive of old levels spanning from 2013 to 2018.
Latest news More
- Sep 10, 2023 – Follow Principia on Mastodon!
- Jul 10, 2023 – The new Principia Official Community Site Archive
- Mar 10, 2023 – Principia 1.5.2 Beta build 2023-03-10
- Dec 31, 2022 – Principia 1.5.2 Beta builds are here!
- Dec 26, 2022 – principia-web turns 2!