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, Android and more, download it today.
This site 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
- Aug 1, 2024 – New contest: Destruction Frenzy
- Jul 12, 2024 – Principia 2024.07.12
- Jun 28, 2024 – Principia 2024.06.28
- May 18, 2024 – Principia is now on F-Droid!
- Feb 29, 2024 – Principia 2024.02.29
Ropster commented on Interesting car game with leaderboard: 3 days ago
InterestingRopster commented on Another Destructible Car!: 3 days ago
Car is blocky which i likeRopster commented on Wireless Data Transfer: 3 days ago
Fascinating, a machine that can send text!Ropster commented on Simple consolе simulator: 3 days ago
This is coolMantar commented on Gravity Game: 5 days ago
This rocksMantar commented on squid game of glass bridge: 5 days ago
Being able to shoot the platforms is neat, in a bigger level it feels like this would reward cleverness.G-flow commented on Large Dummy: 5 days ago
it looks goodGlados commented on Need lua help for spinning this wheel: 12 days ago
Just apply torque to the entity and done