Donations
Principia is an open source project, and in addition to being Free, the game is available for no cost to you, the player.
However, infrastructure for the project costs money, as well as test devices and other related expenses for the project. As such we would appreciate your financial support to keep the project going.
For the donation methods below, you will be making a payment directly to ROllerozxa. He is the current maintainer of the Principia open source project, as well as maintaining the web infrastructure, community spaces and the wiki documentation. Donations are primarily put towards server costs and other related expenses for the project, but excess funds may be used for personal survival costs.
Liberapay
Liberapay works using recurring donations, kinda like Patreon but run by a non-profit. If you would like to make a one-time donation then make a pledge and cancel after the first payment.
Ko-fi
Ko-fi supports both one-time and monthly donations natively.
GitHub Sponsors
GitHub Sponsors supports both one-time and monthly donations natively.
LuaScript API Cheatsheet
ROllerozxa has made a printable overview cheatsheet of the LuaScript API in PDF form, which is available on itch.io. The purchase of the cheatsheet doubles as a donation.
Other
If you would like to donate in some other way then please reach out to ROllerozxa to discuss the details.