The PC version of the game included 10 ambient tracks from the game as standard CD-Audio files, so the game disc could be played in a CD player with the first track reserved for game data (which cannot be read by a CD player), and 10 additional tracks of music.
Quake's nailgun ammo boxes also feature the Nine Inch Nails logo on them.
Reznor later did the initial sound design for Doom 3, but his material was eventually scrapped and replaced with other alternatives. A former NIN drummer, Chris Vrenna , did the theme song instead. Reznor's work on Doom 3 can be heard in the Doom 3 alpha builds, as well as via an unofficial sound pack mod.
A remix of Nine Inch Nails' song "You Know What You Are?" by Clint Mansell was included in the soundtrack of the 2005 Doom movie.
During his tenure at id Software, American McGee was arguably the company's biggest Nine Inch Nails fan and even included a Nine Inch Nails easter egg in one of his levels in The Ultimate Doom, E4M1: Hell Beneath.