Matrix Code Rain is licensed under the GNU General Public License, version 2 or
(at your option) any later version (GPL-2.0-or-later).

This program 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.

This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

The full license text is available at:
https://www.gnu.org/licenses/old-licenses/gpl-2.0.html
