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.
1993 congressional hearings on video games
id Software's "Doom", a first-person shooter where the player fought hellish creatures and included graphic violence, was released on December 10, 1993, the day following the first hearing. Outside of the hearings, there was concern by parents and other organizations on the violence in this game as well. While "Doom" was not mentioned in either Senate hearing, it would come up against in 1999 following the Columbine High School massacre, where the perpetrators had described their planned attack as something straight out of "Doom". As a result, "Doom" is frequently classified along with "Mortal Kombat", "Night Trap", and "Lethal Enforcers" as early examples of violent video games highlighted by the media.