In 1993, Dan Linton, owner of a hugely successful BBS called Software Creations, visited Texas and made his way to Id Software. This is the footage he recorded one night in November 1993.
A Visit to id SoftwareFirst half of the video is a walk through the id Software studios, in the second half you can see John Romero playing unfinished version of Doom with his own commentary of various stuff in the game.
It was 1993, year when Doom was released.
A few years later ... Quake ...