Based on a story by Merriwether Williams, Steve Little, Patrick McHale, Pendleton Ward, and Thurop Van Orman, "It Came from the Nightosphere" was written and storyboarded by Adam Muto and Rebecca Sugar.

The episode also guest stars Martin Olson as Marceline the Vampire Queen's father Hunson Abadeer.

The episode was later released on the eponymous compilation DVD on March 6, 2012, before it was re-released as part of the complete second season DVD/Blu-ray set on June 4, 2013.

After Finn agrees to help Marceline record one of her musical compositions, she begins to sing "The Fry Song"—a tune about the rift between herself and her father, Hunson Abadeer.

Finn and Marceline first try to crush him with a rock, but the resulting skirmish between father and daughter merely infuriates Hunson Abadeer.

"It Came from the Nightosphere" was written and storyboarded by Adam Muto and Rebecca Sugar, from a story by Merriwether Williams, Steve Little, Patrick McHale, Pendleton Ward, and Thurop Van Orman.

[8] In fact, due to the darker and somewhat scary tone of "It Came from the Nightosphere", the Frederator creative developer Eric Homan warned potential watchers through a blog post that the episode might not be suitable for younger children.

[13][14][15] A year after the series had been cast, Ward approached Olson and asked him if he wanted to voice a character on the show.

"[23] He was particularly pleased with the way "the rift between Marceline and her dad is handled with a nice seriousness that fits right in alongside absurd gags about penguins".

"[23] It was also called the "real highlight" of the eponymous DVD release by Charles Webb of MTV Geek.

[25] In a separate review, he later wrote that the episode "has come to represent the best of Adventure Time, and Marceline's [sic], with her angst-y anti-daddy song and her Freddy Krueger-esque sweater has launched a thousand cosplays.

James Grebey called its subject matter deep and from a place of uncontrolled emotion, and characterized it as mature but also eccentric.

He complimented storyboard artists Muto and Sugar, saying that the former "has a hilarious slapstick set-up-the-punchline kind of style of comedy" and the latter "is amazing at executing these super romantic, emotional goosebump-kind of feelings".

[25] He was particularly pleased with the ending, noting that "I love that goose-bumps feeling in a climactic scene with music rising.

"[28] "It Came from the Nightosphere" was later nominated for a 2011 Primetime Emmy Award for Outstanding Short-format Animated Program, although it did not win.