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Doom 3 from WikiPedia:

Doom 3 was a critical and commercial success for id Software; by the beginning of 2007, over 3.5 million copies of Doom 3 had been sold, making it the most successful project by id Software to date. The game engine for Doom 3, id Tech 4, has been successful enough to be licensed out for the use of other developers, such as in Human Head Studios' Prey and Splash Damage's Enemy Territory: Quake Wars.

Doom 3 received a favorable reception from critics, with the PC version of the game holding an 87 percent score and an 88 percent score at the review compilation sites Metacritic and GameRankings respectively. Much praise was given to the quality of Doom 3's graphics and presentation; GameSpot described the game's environments as "convincingly lifelike, densely atmospheric, and surprisingly expansive", while PC Gamer UK described the graphics and non-player character modeling and animation as simply "flawless". IGN's Dan Adams noted that the game's presentation comprised a remarkably high proportion of the game, stating that "without the atmosphere, Doom 3 is a plain shooter that hearkens back to those of the '90s." In addition, several reviewers praised id Software for making the game still look surprisingly good even on lower graphics levels. A number of reviewers also praised the attention paid to the game's premise and setting; GameSpot's Greg Kasavin described getting "the impression that Doom 3 takes place in a fully realized world" while IGN noted that "the UAC base also has a very worn and lived-in feel that adds to the realism." Eurogamer in particular pointed out that the game's opening sequence "feels like a fitting tribute to the excellent ideas" of Valve Software's genre-defining Half-Life.

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