A large collection of Doom and Doom II WAD files.
It contains add-ons for Doom & Doom II.
It was marketed to retail. It comes with a utility called EasyWAD to help sort through all of the files.
When this unlicensed software was noticed, id Software came knocking with a lawsuit and the software was removed from store shelves.
Burn the image to disk or mount with virtualcd/nero image/etc and install.