Below are downloads for beta versions of the new open source Principia 1.5.2.


Download Principia 1.5.2 Beta for Windows x64 (built 2022-11-20)

Administrator privileges are required to run the installer.


Arch Linux

On Arch Linux-based distributions you can use the principia-git package from the AUR which tracks the latest master. Use your favourite AUR helper, like such:

yay -S principia-git

A custom binary repository is also available, being updated every now and then. To add:

echo -e '\n[principia]\nSigLevel = Optional DatabaseOptional\nServer = https://grejer.voxelmanip.se/principia/arch-repo/$arch' | sudo tee -a /etc/pacman.conf


For Debian-based distributions, we have an MPR package tracking the latest master.

Install makedeb (if you do not already have it), and make the principia-git MPR package like such:

git clone https://mpr.makedeb.org/principia-git
cd principia-git/
makedeb -si



Please clone the source repository and build from source:

git clone --depth 1 https://github.com/Bithack/principia

Compilation instructions can be found in the included README file.


1.5.2 beta builds coming soon...

For the time being, you can download the old 1.5.1 principia-web mod for Android.

Problems, crashes or bugs? Ask in the Discord server or open an issue on Github.

If you fancy something else, see the Bithack Game Archive Index.