The last and best game in the Doom trilogy, Last Days of Doom once again casts you in a role of the intrepid space explorer who is the only human being known to survive Doomawangara, the most dangerous planet in the universe. This time, though, instead of contending with the hostile environment and aliens, your task is to save the planet from dying. Although set on the same planet as the first two games, Last Days of Doom feels very different: the atmosphere, for one thing, is not as violent as before (since you're trying to save the planet, not fight it), and there are less immediate dangers that require quick decision-making. Instead, the game is more of a pensive, thought-provoking exercise that you can unravel at your leisure. This should make the game more appealing to IF fans who prefer mental exercise over cliffhanging sequences, although there is still plenty of action.