Continuity mistake: The shots are badly mismatched when Demetrius saves the elderly slave about to fall from the rope. Their arms and legs shift positions multiple times between takes.
Revealing mistake: When he's speaking to Demetrius, Azor turns his back to the camera, and the zipper in his costume is visible.
Revealing mistake: The giant crystal's red beam strikes Zaran at the end, turning him into a skeleton. But the lab specimen used for this effect is a little too obviously just that: you can see the pins holding the bones together, as well as the surgical saw incision in the skull. (01:27:00)
Continuity mistake: When Azor is watching the city burn, footage from Quo Vadis is intercut, turning Atlantis into ancient Rome for several scenes. Both cities are scale models, but the Rome set has completely different buildings than those we've seen in the capital city of Atlantis. (01:24:30)
Continuity mistake: Everyone and everything Zaran shoots with the giant crystal weapon vaporizes into bright red light and then explodes. But when Zaran himself is hit with the beam, he becomes a skeleton instead of vaporizing, and doesn't explode. (01:27:00)
