Ripped from a recently unearthed VHS tape, this 31-minute video offers a rare look at id Software's office in November 1993 just before Doom's release, as well as over 20 minutes of a not-quite-complete build of the seminal first-person-shooter, featuring sound effects cribbed from the SNES version of Wolfenstein 3D.

You can get a sense of how new Doom's elements seemed at the time when John Romero pulls out a chainsaw in the game and someone watching exclaims, "Geez, chainsaws! Unbelievable!" The clip is full of wonderful audio bits like that, bellows of amazement that I remember making myself when I first saw the game on my neighbor's top-of-the-line Packard Bell 486 machine.