Genma Taisen, also known as 'Harmagedon,' is a classic science fiction anime film released in 1983. It is based on a manga series by Kazumasa Hirai and features character designs by renowned artist Katsuhiro Otomo. The story follows a group of psychics who must come together to prevent an ancient evil force, Genma, from destroying the universe. The film is noted for its ambitious animation and epic storyline, blending elements of fantasy and apocalyptic themes.