IV: Revenge of the Vengeance

The album was recorded in the band's own studio, funded by the fans through Indiegogo. The band announced the fundraiser during a webcast upon the release of the song and video of "Obey the Beard." The studio took six months to build.

The band announced that they were making a new album during the "America F*ck Yeah" tour with bands Dog Fashion Disco and The Bunny The Bear, and played "Quack Kills" to promote it. On September 18, 2014, the band announced during a webcast that the album titled Revenge of the Vengeance was releasing November 4, and began accepting preorders for the album.

• "So. Heavy." is a parody of the perceived "heaviness" of deathcore music, particularly the extremely low guitar tunings, reliance on screaming, and breakdowns. In the preceding skit, H-Flat, Josh notes that "there's no such thing as H-flat"; in certain countries the B note is written as H, which would indeed make B♭ become "H♭" or "H-flat". However, in those notations, "H♭" is either noted as "B♭" or "A♯". The song itself is in standard eight-string tuning (F♯).
• "Quack Kills" is a reference to anatidaephobia - the fictional fear that somewhere, somehow, a duck is watching you - first mentioned in Gary Larson's The Far Side.
• "Blue Screen" makes mention of GParted.
• "NSFW" is a song almost entirely composed of variations of the word "fuck"; similar to a scene from the episode "Old Cases" from The Wire. The song itself features sections of Eine kleine Nachtmusik and the finale of the 1812 Overture; Bill Manspeaker of Green Jellÿ is featured in one section where he sings the obscenity over the main riff of Three Little Pigs and Beethoven's Symphony No. 5.
• "Danger Zone", a cover of the Kenny Loggins song from Top Gun, features a mumbled rendition of "Take My Breath Away" at the end, another hit song from Top Gun.