Post
The Texas studio that invented the FPS, the game engine business, and the open-source release as marketing.
Founded in 1991 by John Carmack, John Romero, Tom Hall, and Adrian Carmack, id Software shipped Wolfenstein 3D (1992), Doom (1993), and Quake (1996) — each one a foundational moment for first-person shooters and 3D rendering. id pioneered the licensable game engine business (idTech), the shareware distribution model, and the practice of open-sourcing old engines. Acquired by ZeniMax/Bethesda in 2009, then to Microsoft in 2021. Now focused on the modern Doom revival (Doom 2016, Eternal, The Dark Ages 2025).
Example
Doom (1993) was distributed via shareware — the first episode free, the next two paid via mail order. The game was so culturally dominant that universities banned it from networks for tying up bandwidth, and the original source code was open-sourced in 1997, seeding decades of community ports.
Why it matters
Every first-person shooter, every commercial game engine, and every modern modding scene traces back to id's choices in the early 1990s. Doom's continued cultural relevance — running on every device with a screen — is unmatched in any other game.
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