Wolf4SDL is a Wolfenstein3D source port to the "Simple DirectMedia Layer (SDL)" library. Although there are no visual enchancements in this port except high-resolutions at the moment, the usage of SDL gives a possibility to run this port on a great variety of platforms.
This software is recommended for all fans of the classic look of Wolfenstein3D.
Download and unpack port archive ('Wolf4SDL-1.6-full1_4activision-win32.zip') to the original game's folder ("D:\games\wolf3d" in my example).
The port requires SDL library files to run. Download and unpack SDL files archive ('SDL_and_SDL_mixer-win32.zip') to the same folder as in previous step.
Run the 'Wolf4SDL.exe' with the parameter '--res 1280 800' to start the game with the higher resolution (1280x800 in my example). You can put any resolution as a parameter if you want, but it must be a multiple of 320x200 or 320x240.