A game developed in a democratic cycle.
Everyone can participate in this project. Just open a pull request with a feature you'd like to be added. Maybe your PR gets merged, or maybe not. The community decides. Look into CONTRIBUTING for more informations.
For more information please watch this german video on youtube. Trust me, it's not a rick roll. Or is it? https://www.youtube.com/watch?v=IyOwaiQkkic