A massive demonic invasion has overwhelmed the Union Aerospace Corporation's Mars Research Facility, leaving only chaos and horror in its wake. As one of only a few survivors, you must fight your way to hell and back against a horde of evil monsters.
This was the very first ever user created level when DOOM 3 was released. Trite Breeding Facility Plus is an intense level created by Thearrel 'Kiltron' McKiney and offers a very original look as well as great gameplay. Guaranteed a play time of 45 minutes or more. The level has been downloaded over 100,000 times around the internet and has become one of the most popular user created levels to date.