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
- 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
- Dec 26, 2023 – Principia 1.5.2 Beta build 2023-12-26
Galaxium commented on Lunar Lander #1 First Landing: 15 hours ago
Ez 1 attGalaxium commented on Engine car: 15 hours ago
Haha :D :PGalaxium commented on Glitches: 17 hours ago
EhNoenD_io commented on Robot control: 1 day ago
Very intuitiveNoenD_io commented on illegal shipping: 2 days ago
I mean repairNoenD_io commented on Laser fluid-dropping drone: 2 days ago
WhatNoenD_io commented on He never got over it..: 2 days ago
Why do I keep bouncingNoenD_io commented on stable rocket engine: 3 days ago
You forgot to connect some things