Id STUFF

id STUFF was a digital catalog included on the CDs of the Master Levels and Quake. It allowed players to order a decryption code for commercial games stored on the CD, as well as advertising physical merchandise such as T-shirts and strategy guides. The software ran as a 16-bit Windows application.

Games offered
id STUFF on the Master Levels CD offered the following games:
 * The Ultimate Doom
 * Doom 2
 * Heretic

id STUFF on the Quake CD had a larger selection:
 * Wolfenstein 3D
 * The Ultimate Doom
 * Doom 2
 * The Master Levels
 * Heretic
 * Hexen
 * Deathkings of the Dark Citadel