This is a MASSIVE massive file from Archive.org, It's a CD from 1995 by Cybercore Publishing, It contains 2500 levels for 6 of the best PC Games of the Time:Doom, Doom II, Descent, Star Wars:Dark Forces, Heretic and Rise Of The Triad, It also has a huge amount of editors and tools, Utilities and other goodies. This half-a-Gig file is not by me and I do not take credit for it either, This file was originally in BIN File format so I used MagicISO to covert it to ISO format so it may be opened like a WINRAR file.