===Other===
*''[[Purest Feeling (halo)|Purest Feeling]]'' (unofficial)
*''[[Purest Feeling II]]'' (unofficial)
==Versions==
===Down In It===
Appears on ''[[Purest Feeling]]'' as the last track, differing from its official counterparts as that it has an extended intro with strange screams and odd static. It also includes about 1 minute and 8 seconds of distorted clippings of the song at the end as a finish to the album. Musically it's extremely close to the "(Demo)" version from the ''Head Like a Hole'' US single.
The version that appears on ''Pretty Hate Machine'' is in fact the "Skin" remix, but it is not listed as such on the album.