The film is loosely based on the novel of the same name by David Saperstein. A sequel, Cocoon: The Return, was released in 1988 in which almost all of the original cast reprised their roles.

The film is loosely based on the novel of the same name by David Saperstein. A sequel, Cocoon: The Return, was released in 1988 in which almost all of the original cast reprised their roles.