DOOM RETRO is Copyright © 2013–2014 by Brad Harding. All rights reserved. Made in Sydney, Australia. ABN 37 234 369 257. DOOM RETRO 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. DOOM RETRO 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. DOOM is a registered trademark of id Software LLC, a ZeniMax Media company, in the US and/or other countries, and is used without permission. All other trademarks are the property of their respective holders. DOOM RETRO is in no way affiliated with nor endorsed by id Software LLC.