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.
Nonviolent video game
In the aftermath of the Columbine High School massacre, a $5 billion lawsuit was filed in 2001 against a number of video game companies and id Software, the makers of the purportedly violent video game, "Doom" by victims of the tragedy. Also named in the suit were Acclaim Entertainment, Activision, Capcom, Eidos Interactive, GT Interactive Software, Interplay Entertainment, Nintendo, Sony Computer Entertainment, Square Co., Midway Games, Apogee Software, Atari Corporation, Meow Media, and Sega. Violent video games mentioned by name included "Doom", "Quake", "Redneck Rampage", and "Duke Nukem". The suit was dismissed by Judge Babcock in March 2002 in a ruling suggesting that a decision against the game makers would have a chilling effect on free speech. Babcock noted that "it is manifest that there is social utility in expressive and imaginative forms of entertainment, even if they contain violence."