Revealing: After being hit with the machete, as Jason falls and lands on the ground (with the machete holding his skewered head in the air), it is painfully obvious from the skin texture and unnatural facial movements that his head is a replica prop.

Visible crew/equipment: When Samanth is pretending to hid underwater until Sarah agrees to go swimmming, when Sarah is searching for Samantha, is shows a shot of Samantha coming from underneath the docks. When she does, you can see it is a dummy coming from underneath the docks.

Continuity: When Jimbo gets his hand impaled on the counter with a corkscrew by Jason, the counter is clear, but a few scenes later as Jason leaves the kitchen, there's a pot holder laying on the counter.

Continuity: When Trish's car stops, the licence plate goes from dirty to clean.

Revealing: Trish tells Tommy to go get a hammer and some nails. When Trish then shouts "Tommy, hurry" you can see the shelf to her right get bumped by somebody in the crew, who was obviously standing nearby.

Continuity: When Tommy is looking under the hood of the broken down car, it shows someone approaching and you see that they are wearing grey trousers. The person ends up being Rob, but Rob wears black trousers.

Continuity: When the paramedics are rolling Jason, his feet are not facing them, but when they come into the room with Axel, Jason has switched positions.

Revealing: Near the end when Jason throws the hammer at the girl, it sticks to the damaged part of the wall after it hits. But it's just against the wood with the flat top, there's nothing to hold the hammer there and it's only hit the wood on the other side of the wall. They probably used a magnet to attract and keep it there for safety reasons.

Revealing: Just before Trish jumps out of the window, as Jason runs forward to get her, you can see he has normal, human eyes, instead of his disfigured, odd eyes, seen at the end of the movie.

Continuity: After Tommy slices Jason in the head with the machete, he picks the machete up, and in this shot his shirt is dry. In the next shot when Trish goes over to hug him, his shirt is wet, then dry again.

Revealing: When Tina is thrown out of the window by Jason, you can see she is wearing soft body suiting on her legs as she hits the car.

Continuity: After electrocuting Jason with the TV, he falls backwards, and the door is left open. When Trish and Tommy walk over, the door is shut.

Revealing: Near the end when Trish is running from Jason, Jason crushes a lamp on the floor and for an instant it becomes pitch black. A moment later, the room is lit again by a sudden occurrence of "moonlight."

Revealing: When Jimbo is killed with the cleaver, you can see that the cleaver has the front cut out of it to accommodate Jimbo's head.

Continuity: When Trish has entered her house after escaping from Jason, she hears him behind her in the doorway, and swings at him with a machete, but hits the door frame. You can see there's a mark from a previous swing.

Deliberate "mistake": When Jason is going next door to chase after Trish, he pulls Jimbo's body down from the doorway and begins walking towards Trish's cabin. He is seen walking by himself. However in the next scene, he throws Rob's body through the window. There was no time for him to go back and get the body.

Factual error: When Tommy is playing Zaxxon on his computer, he is about to go into a barrier and die. Firstly the audio of the ship crashing happens before it hits, secondly, in the next shot the ship has reappeared.

Continuity: When Trish grabs the TV to hit Jason with, the big lamp gets knocked to the floor. Moments later as they leave the room, the lamp is back up to standing.

Continuity: As Jason breaks into Tommy's room, a purple monster mask on Tommy's wall starts to spin, then stops a few shots later, then starts spinning again in the next shot.

Revealing: When Trish and her mom are jogging, a bush in front of them moves before they run by it, caused by the cameraman brushing it as he walked backwards.