Development of Doom
The development of "Doom", a first-person shooter video game by id Software, began in November 1992 and continued until the game was released in December 1993. Seven people worked on "Doom", which is considered one of the most significant and influential titles in video game history. The initial development team was programmers John Carmack and John Romero, artists Adrian Carmack and Kevin Cloud, and designer Tom Hall; late in development Hall was replaced by Sandy Petersen and programmer Dave Taylor was added to the team. The music and sound effects were created by Bobby Prince.
John Romero
Romero worked at id Software from its inception in 1991 until 1996. He was involved in the creation of several milestone games, including "Commander Keen", "Wolfenstein 3D", "Doom", "" and "Quake". He served as executive producer (and game designer) on "Heretic" and "". He designed most of the first episode of "Doom", a fourth of the levels in "Quake", and half the levels in the "Commander Keen" and "Wolfenstein 3D: Spear of Destiny". He wrote many of the tools used at id Software to create their games, including DoomEd (level editor), QuakeEd (level editor), DM (for deathmatch launching), DWANGO client (to connect the game to DWANGO's servers), TED5 (level editor for the "Commander Keen" series, "Wolfenstein 3D: Spear of Destiny"), IGRAB (for grabbing assets and putting them in WAD files), the installers for all the games up to and including "Quake", the SETUP program used to configure the games, and several others. In his keynote speech at WeAreDevelopers Conference 2017, Romero named this period Turbo Mode, in which he emphasizes having created 28 games, in 5.5 years with a team consisting of fewer than 10 developers.