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 (2016 video game)
The soundtrack was widely praised and won the Best Music / Sound Design award at The Game Awards 2016; Gordon, joined by Periphery drummer Matt Halpern and "Quake II" composer Sascha Dikiciyan (aka Sonic Mayhem), performed a short medley of the soundtracks "Rip and Tear" and "BFG Division" as well as "Quake II"s "Descent Into Cerberon" live at the awards show. The soundtrack was released in September 2016. It contains 31 tracks from the game, over 2 hours of music.