Developer website: Brad Oliver
GLHexen 2 is a port of the original 3 level demo. The source code was released to the public so the developer was able to port the demo over to the Mac platform. GLHexen is also available for the demo.
Hexen 2, PowerPC, MacOS 8.6 or later, Graphic Acceleration card with 4+ MB, OpenGL 1.1.2 or later