What is "matango"

is a 1963 Japanese horror film directed by Ishirō Honda. The film is about a group of castaways on an island where they find themselves under the spell of the narcotic-like mushrooms that grow on the island that result in the men becoming mutated beings.

The film was partially based on William H. Hodgson's short story " The Voice in the Night". The film was initially going to be banned in Japan due to the special effects on some of the mutated humans resembling the victims of the atomic bombings of Hiroshima and Nagasaki. The film was released theatrically in the United Kingdom and directly to television in the United States in shortened forms. It was released in its original full-length form on DVD in 2005 in the United States.