The zlib/libpng License

Copyright (c) 2003-2008 Relish Games

This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software.

Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions:

  1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
  2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.

BASS Audio Library

WARNING!!! BASS is not a part of HGE and is licensed separately. It is free for non-commercial uses, but if you want to use HGE with BASS in a commercial or shareware application you must purchase BASS. See for details.

You may choose not to use BASS in your application and replace it with your own code or any other audio routines, either free or licensed to you.