This mod is for Brutal Doom and Zandronum. It has a couple of original sound effects, but all doom1/2 and final doom original levels. which are 85 levels. But, you also see through the eyes of an alien in this one. I found some old doom files i had 15 years ago, and found them in my closet covered in dust. I installed it to my hardrive and Called it (Doom The Extraterrestrial) any questions you guys have, the anwers are in the download in a HELP folder. just download, extract to your hardrive and run DoomET. tre masinas, thanks for playing.