===Links to other NIN material===
====''[[The Downward Spiral(halo)|The Downward Spiral]]''====Side B of the ''Not The Actual Events'' vinyl features 3 additional, unlisted tracks from ''[[The Downward Spiral (halo)|The Downward Spiral]]'' in reverse: "[[Hurt (song)|Hurt]]", "[[The Downward Spiral (song)|The Downward Spiral]]" and "[[Reptile]]".
In the physical component for ''Not The Actual Events'', the lyrics of "She's Gone Away" are superimposed over a copy of page 14 from the Deluxe Edition booklet of ''The Downward Spiral'', and lyrics embedded in the Apple Music release include extra, unsung words directly referencing "Reptile".
Additional lyrics for "Less Than" are printed on the physical component of ''Add Violence'', and they seem to reference "[[March Of The Pigs (song)|March Of The Pigs]]" by using the line "doesn't it make you feel better".
====''[[The Fragile(halo)|The Fragile]]'' / ''[[Still]]''====
Additional lyrics for "This Isn't The Place", printed on the physical component of ''Add Violence'', are a direct quote from "[[The Great Below]]", with the line "I can still feel you, even so far away". Trent stated that "This Isn't The Place" is about [[David Bowie]] during a concert. It can be speculated that this line relates to mourning in both case.
An alternate front cover for ''Not The Actual Events'' is a re-used ''[[Still]]'' cover art.
====''[[With Teeth(halo)|With Teeth]]'' / ''[[Bleedthrough]]''====Lyrics from the track "The Background World" feature a reference to the [[''Bleedthrough]] '' concept, in the line "Is always bleeding through".
Additional lyrics for "The Lovers" printed on the physical component of ''Add Violence'' feature the word "godlike", possibly referencing "[[The Life You Didn't Lead]]". In an episode of the ''Song Exploder'' podcast[http://songexploder.net/nine-inch-nails], [[Trent Reznor]] and [[Atticus Ross]] explained that the song is about an alternate reality that explores what might have happened if Reznor had never left his old home of New Orleans and had never gotten clean and sober. It began as a sort of poem he had written in order to explore what he calls the "seduction of addiction" and stated that "it was me allowing myself permission to examine a period of my life that I had consciously chose not to think about very much, then immerse myself in it in a kinda 'What if the path I'm currently on wasn't really the right one, and I just went hard-left the other way?".
====''[[Year Zero]]''====
''Add Violence'' is in part a continuation of the ''Year Zero'' story and its [[Timeline of Year Zero Discovery|ARG]], with elements appearing on the front cover and the back cover of the album ("SIMULATION ON", "PRESENCE", "2022", etc), in the music video for "This Isn't The Place" (appearance of a "Cedocore" box), and on the physical component. They are all linked together with multiple variations of the panel, mentions referencing the concept of The Trilogy, the physical component appearing itself in the music video, etc.