DOOM v0.99 Shareware DEMO1
The first in-game demo from the very first DOOM version, released on the 10th December 1993. It started up automatically the first time you ran the game, so for thousands of people this was the first bit of DOOM they ever saw. This is presumed to have been recorded by John Romero.
Demo captured from the original .exe using Dosbox 0.72.