Doom (1993 video game)
The ability for others to create custom levels and otherwise modify the game using WAD files turned out to be a popular aspect of "Doom". Gaining the first large mod-making community, "Doom" affected the culture surrounding first-person shooters, and also the industry. Several future professional game designers started their careers making "Doom" WADs as a hobby, among them Tim Willits, who later became the lead designer at id Software.
Doom (1993 video game)
In 2009, GameTrailers ranked "Doom" as number one "breakthrough PC game". That year "Game Informer" put "Doom" sixth on the magazine's list of the games of all time, stating that it gave "the genre the kick start it needed to rule the gaming landscape two decades later." "Game Informer" staff also put it sixth on their 2001 list of the 100 best games ever. IGN included "Doom" at 2nd place in the "Top 100 Video Game Shooters of all Time", just behind "Half-Life", citing the game's "feel of running and gunning", memorable weapons and enemies, pure and simple fun and its spreading on nearly every gaming platform in existence.