AlumiuN has released his port of Wolfenstein 3D Super Upgrades for Wolf4SDL, providing an easy way to play this classic pack on modern systems!
This download comes with all (hundreds of?) maps for Super Upgrades in one file, and an exe that will let you select all the different map packs from inside the game itself. You will however need a registered version of Wolfenstein 3D to be able to play.
Important to note is that duplicate sets have been removed from this version, and the unique mapset Temporary Insanity is present in the files, but unable to be played. This is due to the difficulty in replicating the various bugs and exploits that allow Temporary Insanity to exist.