Revealing mistake: When Wolff's ship lands on Terra 11 you can see a wire attached to the left wing. Visible on Blu-ray. (00:10:31)
Continuity mistake: When Wolff and Chalmers find the gang of raiders attacking the sail-driven ship, at one point there is a shot from the front of the ship showing no-one at the controls, then cut to a close-up of the controls and the old man is shown holding onto them trying to stop the ship. (00:14:34)
Visible crew/equipment: When Wolff finds Chalmers dead you can see a reflection of a boom microphone in the protective hood of Wolff's four wheel drive vehicle. (00:20:33)
Revealing mistake: During the Amazon women sequence, when Niki gets pulled underwater you can tell by the movement of the water that it was shot in reverse. (00:49:32)
Visible crew/equipment: Right at the start of the film as the alien spacecraft is landing on the planet, you can see the scaffolding of the studio at the top of the screen.