The founders of the studio discussed the early days back in the 1990s and talked about their biggest titles, Wolfenstein, Doom, and Quake.
On February 1, 1991, John Romero, John Carmack, Tom Hall, and Adrian Carmack founded id Software, the developer of such well-known games as Wolfenstein, Doom, and Quake. The founders discussed with How-To Geek the 30-year-long career path in the industry, reminisced about the early old days, and talked about their games.
My favorite project was Doom. had more of a hand in Doom than any of our other games, and really defined so much of it. Tom Hall did the initial game design, then I revised and simplified it. I defined the level design style and made the first episode. I wrote the level design tool, DoomEd in NeXTSTEP OS.
John Romero via the interview