According to the Medved brothers' book "The Golden Turkey Awards", director Phil Tucker attempted suicide after the film was released because critical reaction was so negative. He put a gun next to his head, pulled the trigger, and missed.

Reportedly, the film was shot entirely outdoors, without sets, in four days.

In 1984, MTV showed the film in its original 3-D format. MTV offered 3-D viewing glasses by mail order ahead of the broadcast date.

The scenes on the viewscreen presented by Ro-Man come from a variety of sources. Shots of New York in apocalyptic ruins are matte paintings by Irving Block from 3000 A.D. (1952). Shots of the headquarters of the Great Guidance (a rocket ship in launching position) was originally created for Rocketship X-M (1950), also painted by Block.

This is considered the first science=fiction film with stereophonic sound.

Most of the movie was shot at Bronson Canyon. The scenes in the ruined home were shot in a hilly residential area.

Released to negative critical response and weak box-office, the title was quickly changed to MONSTER FROM MARS. The film, however, illustrates clearly that the monster is from the moon.

This film is listed among The 100 Most Amusingly Bad Movies Ever Made in Golden Raspberry Award founder John Wilson's book THE OFFICIAL RAZZIE® MOVIE GUIDE.

Originally released in 3-D.

Close examination of the Ro-Man's helmet reveal it to be very similar to the helmets worn by the moon-men on the lunar surface in Republic Pictures' serial Radar Men from the Moon (1952).

After the lightning flash we see dinosaurs battling, and the footage comes from other films. The large lizards are from Man and His Mate (1940) (Hal Roach, 1940), supervised by Roy Seawright; the one brief shot of two stop-motion triceratops fighting is from Lippert Pictures' Lost Continent (1951), animator unknown.

One of the films included in "The Fifty Worst Films of All Time (And How They Got That Way) by Harry Medved and Randy Lowell.

In 1984 a clip from this film was shown in The Cars music video for "You Might Think".

Was riff tracked for a episode of Mystery Science Theater 3000 (1988) in its first season.