Trivia / 20 Million Miles to Earth

• Recycled Script: The bare bones of the plot are notably similar to King Kong, with just enough changes to give it its own flavor.
• What Could Have Been: the original concept design for Ymir was a cycloptic monster with goat hooves, this design was reused for the cyclops in The Golden Voyage of Sinbad.
  • The bulk of the story was originally going to take place in Chicago rather than Rome.