Parent repo: https://github.com/Warzone2100/warzone2100
See:
Unless otherwise mentioned in COPYING.NONGPL,
Warzone 2100 is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
SPDX-License-Identifier: GPL-2.0-or-later