Yokai Monsters: Spook Warfare (Japanese: 妖怪大戦争, Hepburn: Yōkai Daisensō, lit. 'The Great Yokai War') is a 1968 Japanese fantasy horror film directed by Yoshiyuki Kuroda. It is the second in a trilogy of films produced in the late 1960s, all of which focus around traditional Japanese monsters known as yōkai. (It was preceded by Yokai Monsters: 100 Monsters (1968), and was followed by Yokai Monsters: Along with Ghosts (1969).) In 2005, director Takashi Miike released The Great Yokai War, a modern retelling of the story which borrows many elements from Spook Warfare.