Hollow (2021) -

: Both Jelly Roll and Noah Kahan released songs titled "Hollow" in September 2021.

Based on the Netflix original series of the same name, was released as a feature-length film in late 2021 after the series' third season was cancelled and reworked into a movie.

: The novel explores themes of "occluded forms of knowledge," religious sacrality, and the "ineffable gaps" in a rational world. The Hollow (Animated Feature Film) Hollow (2021)

The late Brian Catling, a renowned sculptor and writer, released his final novel, , in 2021. It is a work of "weird fiction" or "Gothic fantasy" that draws heavily from the nightmarish, surreal imagery of painter Hieronymus Bosch .

: According to data from the JH Wiki Collection , the film earned over $939 million worldwide, making it one of the highest-grossing films of the year. : Both Jelly Roll and Noah Kahan released

: A critically acclaimed horror visual novel and RPG by Abby Howard. Set in an Appalachian coal town, players investigate family secrets and supernatural occurrences. According to Grunge Gamer , it was a standout indie title for its hand-drawn art and deep choice-driven narrative.

: A YA dark fantasy novel by Krystal Sutherland, focusing on the three mysterious Hollow sisters and their sinister childhood disappearance. The Hollow (Animated Feature Film) The late Brian

: Directed by William Renschen, Peter Ramsey, and Rob Letterman, the film was produced by Sony Pictures Animation and released in the U.S. on October 1, 2021.