Companies & Studios

id Software

The house that Doom built

id Software created Commander Keen, Wolfenstein 3D, Doom, and Quake, defining PC gaming and pioneering shareware distribution.

commodore-64 developerspioneers 1991–present

Overview

id Software made PCs into gaming machines. Commander Keen proved PCs could do console-style games. Wolfenstein 3D invented the first-person shooter. Doom made it a phenomenon. Quake brought true 3D and internet multiplayer. John Carmack's engines, John Romero's design, and aggressive shareware distribution changed gaming forever.

Fast facts

  • Founded: 1991 in Shreveport, Louisiana.
  • Founders: John Carmack, John Romero, Tom Hall, Adrian Carmack.
  • Distribution: Pioneered shareware—free first episode, pay for the rest.
  • Acquired: By ZeniMax Media in 2009, then Microsoft via Bethesda purchase (2021).
  • Notable games: Commander Keen, Wolfenstein 3D, Doom, Quake.

Shareware revolution

id's distribution model was radical:

  • Give away the first episode free.
  • Players share copies—word of mouth marketing.
  • Hooked players buy remaining episodes.
  • Cut out retail, keep more revenue.

Doom spread like a virus through office networks and bulletin boards.

Technical leadership

John Carmack's engines set standards:

  • Commander Keen: Smooth scrolling on PCs.
  • Wolfenstein 3D: Raycasting pseudo-3D.
  • Doom: Height variation, lighting, non-orthogonal walls.
  • Quake: True polygon 3D, client-server networking.

Each engine was eventually open-sourced, educating thousands of programmers.

Design innovation

Beyond technology, id innovated gameplay:

  • Deathmatch: Competitive multiplayer became standard.
  • Modding: Tools and source access encouraged community creation.
  • Level design: Doom's levels were studied and imitated.

The split

Success brought tension:

  • John Romero left after Quake (1996).
  • Tom Hall left earlier, during Doom development.
  • Company continued under Carmack's technical leadership.
  • Carmack eventually left for Oculus VR (2013).

Modern id

Under ZeniMax/Microsoft:

  • Doom (2016) revitalised the franchise.
  • Doom Eternal (2020) continued the momentum.
  • id Tech engines still power major releases.

Legacy

id proved small teams could compete with—and defeat—large publishers. Their technical innovation and shareware model created templates still used today. Every first-person shooter descends from their work.

See also