GZDoom default brightmaps Copyright (c) 1998-2025 ZDoom + GZDoom teams, and contributors The content in here is based on original game content, i.e. - You may not sell this work - this also means that this file may not be distributed with commercial standalone games based on the GZDoom engine. - Your work must comply with id Software's original licenses (i.e. they must only work on the game from which they originated) - All derivative works must credit the original authors (id Software (Doom), Raven Software (Hexen/Heretic), Rogue Software (Strife)