id software

id – defined by Freud as the primal section of the human psyche; id Software, located in Mesquite, Texas, was founded in 1991. From inception to present day, id Software has relentlessly provided technical, design and artistic leadership as an independent game developer and technology provider. Transcending the games industry, id’s iconic brands such as Wolfenstein, DOOM, QUAKE and Enemy Territory have become staples of popular culture for generations of gamers.

http://www.idsoftware.com