This is a short list of instructions on how to use it :
Download and unpack GLDuke0.30.zip to the directory with original game files and run Setup.exe
If program asks for missing dll files (such as“mfc42d.dll”, “msvcrtd.dll”), download the ‘glduke_dll.zip’ pack and unpack it to the game directory.
Click OK on ‘First-time run’ warning window.
Click on ‘Configure this renderer’ to open Renderer Configuration dialog.
Set optimal Resolution, enable ‘Full Screen’ mode and click ‘OK’.
Enable Mouse in ‘Controls Settings’.
Configure left and right mouse buttons in ‘Mouse Settings’.
Ensure that ‘Duke Nukem 3D’ is set as current game mode in Mods/TCs section.
Click “Save&Close” to save your settings.
If everything worked fine, you should see some weird and buggy representation of the first Duke 3D level.
Unfortunately, the game seems to be completely non-playable with this mod on my hardware configuration. If anybody has achieved anything more than on the attached screenshot, please contact me.