Piru is a game engine that is meant to make it as easy as possible to develop performant 3D multiplayer games.
Piru is available under the GNU Affero General Public License version 3 with an exception for game content.
By contributing to Piru, you assert that you are contributing the code under the AGPLv3 and the exception (including any future revised versions published by the project leads), and that you have the legal right to do so.