ट्रिविया

Remade, almost line for line, as In the Year 2889 (1969).

Louise (Lori Nelson) keeps a picture of her now-dead boyfriend by her bed. The picture is that of director Roger Corman.

Shot in nine days.

The fourth film directed by Roger Corman, and his first in the science-fiction/horror genre. It was shot over ten days with a budget of $96,234.49.

Referenced in a 2001 horror film with the same title, The Day the World Ended (2001).