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.
Doomguy
The Doomguy, commonly known as the Marine and referred to as the Doom Slayer in the rebooted portion of the series, is the unnamed player character in the "Doom" video game franchise of first-person shooters created by id Software, and its sequels and spin-off media. He is a space marine dressed in green combat armor who does not speak onscreen.