id Software LLC () is an American video game developer based in Richardson, Texas. The company was founded on February 1, 1991, by four members of the computer company Softdisk, programmers John Carmack and John Romero, game designer Tom Hall, and artist Adrian Carmack. Business manager Jay Wilbur was also involved. id Software made important technological developments in video game technologies for the PC (running MS-DOS and Windows), including work done for the "Wolfenstein", "Doom", and "Quake" franchises. id's work was particularly important in 3D computer graphics technology and in game engines that are used throughout the video game industry. The company was involved in the creation of the first-person shooter (FPS) genre. "Wolfenstein 3D" is often considered to be the first true FPS, "Doom" is a game that popularized the genre and PC gaming in general, and "Quake" was id's first true 3D FPS.