Chopping Mall

The film was allowed to shoot at a real California mall as long as they did not damage any facilities and had removed any traces of their presence before the mall opening time of 9AM. While the mall's head of security didn't like the filmmakers and was constantly accusing them of causing disrepair, the mall's owner was supportive of the film and made sure the production was able to complete its work on schedule.

Throughout the entire movie, people can be seen walking around in the background on different floors of the mall, even though it's supposed to be closed.

In the closing credits, the name of each actor appears over their photo. However, the name of the person whose character is decapitated appears over a photo of their headless shoulders.

The TV network version has some minutes of aerial stock footage of Los Angeles added, as well as some more voice-over dialoge between the robot technicians and more scenes of Alison and Ferdy watching Attack Of The Crab Monsters on the TV set.

Edited into Andy Colby's Incredible Adventure (1989)