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)
Like they had for "Wolfenstein 3D", id hired Bobby Prince to create the music and sound effects. Romero directed Prince to make the music in techno and metal styles; many of the songs were directly inspired by songs from popular metal bands such as Alice in Chains and Pantera. Prince himself felt that more ambient music would work better for the game and produced numerous tracks in both styles in the hopes of convincing the team; Romero, however, still liked the metal tracks and put both styles in the game. Prince did not make music for specific levels, as they were composed before the levels were completed; instead, Romero assigned each track to each level late in development. Unlike the music, the sound effects for the enemies and weapons were created by Prince for specific purposes; Prince designed them based on short descriptions or concept art of a monster or weapon, and then adjusted the sound effects to match the completed animations. The sound effects for the monsters were created from animal noises, and Prince designed all the sound effects to be distinct on the limited sound hardware of the time, even when many sound effects were playing at once.