code:
-----
Philippe Widmer (freanux) - GPL 3.0+

graphics:
---------
Philippe Widmer (freanux) - CC-BY-SA 4.0
Sascha Giambalvo (cataclisma) - CC-BY-SA 4.0
Ruben Rodrigues (ruby) - CC-BY-SA 4.0

maps:
-----
Ruben Rodrigues (ruby) - GPL 3.0+
Philippe Widmer (freanux) - GPL 3.0+
Sascha Giambalvo (cataclisma) - GPL 3.0+

music:
------
Daniel Wressle (Brandon Walsh) - free to distribute
Martins Garden (celmar) - CC-BY-SA 4.0

testing:
--------
Ruben Rodrigues (ruby)
Sascha Giambalvo (cataclisma)
Julia Widmer
and the Goat Attack community
