[1] On March 12, 2013, Ghost began providing fans with a free streaming of "Year Zero" if they promoted the band on Facebook, by endorsing its frontman to be elected the next Pope of the Catholic Church.
[2] The 10" vinyl version of the single includes the B-side "Orez Raey", which as the title suggests is the A-side played backward.
The single's cover art is an homage to John Martin's famous engraving, Satan Presiding at the Infernal Council.
"[5] Metal Forces called it one of the album's best with its "eerie chants that sound as if they’ve been lifted from the local monastery" and its infectious drum beat.
[9] In 2022, a viral trend on TikTok where users show videos of their dogs or cats, pausing at each of the opening lyrics of the song ("Belial Behemoth Beelzebub ...") to coincide with their pets pulling a savage expression, which garnered tens of millions of views.