Constantine: City of Demons is an American animated web series based on the DC Comics character John Constantine, a demon hunter and occult detective. It is a loose adaptation of the graphic novel Hellblazer: All His Engines by writer Mike Carey and artist Leonardo Manco. Tangentially tied to the live-action series Constantine through actor Matt Ryan, the series is set in the DC Animated Movie Universe, connecting it to the 2017 animated film Justice League Dark. The first half was initially released as five separate episodes on the streaming platform CW Seed on March 24, 2018, after premiering at WonderCon. The series was released as a feature-length film released on DVD and Blu-ray on October 9 and later compiled and completed as two episodes on CW Seed on January 17, 2019. It is the 34th film in the DC Universe Animated Original Movies.