ENIGMA and her sister project LateralGM and RadialGM are all licensed under GNU GPL v3 or later. The licensing allows you to use, modify, and share the source code of ENIGMA and even make commercial derivatives of the program as well as sell your games made with the program.
ENIGMA 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 3 of the License, or (at your option) any later version.
ENIGMA 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 (COPYING) for more details.
You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.
LICENSE refers to a file by that name which contains the normal header, along with any other relevant license information for packaged libraries, icons, code, or anything else that uses a different but compatible license.
A special exemption is provided by our license to allow the commercial selling of software made with ENIGMA.