Castlevania: Nocturne is an American adult animated dark fantasy action streaming television series created and written by Clive Bradley and produced by Kevin Kolde for Netflix. It is a stand-alone sequel to the animated series Castlevania, based on the video game series of the same name by Konami and loosely adapted from Castlevania: Rondo of Blood (1993) and its sequel Symphony of the Night (1997), as well as story elements from Harmony of Dissonance (2002). The series is set during the French Revolution, where vampire hunter prodigy Richter Belmont fights to uphold his familys legacy. The show features elegant animation and surprises as the heroes battle vicious monsters while also facing down their own inner demons. Castlevania: Nocturne premiered on Netflix on September 28, 2023, and has received positive reviews from critics.