This is a Doom 3 full game playthrough, no commentary, gameplay walkthrough A massive demonic invasion has overwhelmed the Union Aerospace Corporation's (UAC) 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 demons. Developed by id Software, and originally released in 2004, DOOM 3 is a critically acclaimed, horror/action first-person shooter and reimagining of the original DOOM. #gameplay #walkthrough #gaming #doom