Due to the small crew that included a maximum of only four animators at any given time, The Spine of Night took seven years to make.
The actress Abigail Savage, who plays the role of Kestelwren in this movie, is also a professional sound editor and served as the production's sound designer.
One of only three theatrically released animated films of the 2020s to be unrated (never rated by the MPAA), the others being Mad God (2021) and Cryptozoo (2021).