Why did they decide to make this move? Part of the reason is that the fourth Doom game will not be a continuation of the storyline for Doom III, according to Willits. Doom III was basically a "reimagining" of the first Doom game's storyline (a la the revamped Battlestar Galactica). So willl the fourth Doom game be a continuation of, say, Doom II's Earth invasion? Willits wasn't giving up any story ideas yet.