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.
Featured levels
Latest news More
- Feb 29, 2024 – Principia 2024.02.29
- Dec 26, 2023 – Principia 1.5.2 Beta build 2023-12-26
- 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
NoenD_io commented on Realistic Offroad Adventure 2024: 16 days ago
YesNoenD_io commented on jumper bot: 16 days ago
On android??????????!!!!!!freelikegnu commented on Tiny Rocket Drone - Lua PID: 1 month ago
Very good control!Aeonixx commented on Falling Notes - Gymnopedie No. 1: 1 month ago
My score is 3810ROllerozxa commented on comically fast wizard (fixed): 1 month ago
laggay 🏳️🌈MEMORY_LOST commented on comically fast wizard (fixed): 1 month ago
what the hell have you done 😭it's so laggay it just crashed buh.
freelikegnu commented on Principianball [FreeLikeGNU] WIP: 2 months ago
G-flow, I'll work on score upload once the table is finished... there's a bit more I want to do first.G-flow commented on Principianball [FreeLikeGNU] WIP: 2 months ago
is good, but u can upload the scores?