GL Duke Nukem 3D v0.52

GL Duke Nukem 3D v0.52

GLDuke allows you to take advantage of OpenGL, vastly improving the graphics for the classic Duke Nukem 3D.

v0.52 Beta:

- Added basic music support;

- Tweaked the keyboard input in the menus;

- Fixed most crashes related to the BUILD engine port;

- Fixed the parallaxed sectors;