Although set on an unspecified tropical island, the movie was mainly filmed in the Gulf of Orosei in Sardinia.
Robi's complete name is Roberto Minghelli. The only time we hear this is on his wrist radio when he first arrives on the island.
When Robinio is playing poker with himself, he pretends to answer the phone to his wife. Instead of calling her "magda", he calls her "Pina". This is a nod to Paolo Villaggio most famous character's wife Pina Fantozzi.
Italian censorship visa # 69581 delivered on 21-12-1976.
Loosely based on the novel Robinson Crusoe (1719) by Daniel Defoe. The first name of main character, Robinio, is a reference to Robinson Crusoe (he then became Robinson on the island). The original character of servant Friday is here transformed into a girl, played by Zeudi Araya.