No:1 Flash Gordon: Spaceship to the Unknown

The serial film was subsequently released in a 72-minute feature version in 1936, which was reissued in 1949 as Rocket Ship. A different feature version of the serial, at 90 minutes, was sold directly to television in 1966 under the title Spaceship to the Unknown.
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No:2 Flash Gordon's Trip to Mars

is a 1938 Universal Pictures 15 chapter movie serial, based on the syndicated newspaper comic strip Flash Gordon. It is the second of the three Flash Gordon serials made by Universal between 1936 and 1940.
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No:3 Purple Death from Outer Space

is a 1966 American feature length compilation of the first half of the 1940 serial Flash Gordon Conquers the Universe.
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No:4 Perils from the Planet Mongo

In 1966 Flash Gordon Conquers the Universe was edited down into two feature-length films for television syndication, Purple Death from Outer Space and Perils from the Planet Mongo.
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