This is the only Hammer film set in the future.
Keep an eye on the women's fashion on the Moon- although somewhat influenced by then-current couturiers, very similar fashions - and colored wigs - will appear in Gerry Anderson's live-action series "UFO" shot contemporaneously, and Moon Zero Two lead Catherine Schell will be wearing an outfit very similar to that of Kemp in this film when she stars in the second series of Gerry Anderson's "Space:1999" as the alien shapeshifter Maya.
This movie was described by the producers and director as a "western in space", complete with claim jumpers, showdown-type gunfights, a hired gunslinger and even dancing saloon girls.
The film takes place in May 2021.
Among the signs held up by the crowd in the animated intro sequence are "Bang It," "Ban It," "Love It," "Chase It," "Knickers," "Resist Everybody," "Down with Everything," "Step Ins Are Drop Outs," "Ban Bagrites," "Kastro for King," and "Sing Jellied Eels Altogether."
The film was released as a double bill with When Dinosaurs Ruled the Earth (1970).