Continuity mistake: After Jimmy draws the pentagram on his hand to connect the dots, he holds up his hand to show his sister and the drawing is different from the one shown before. The outline is much darker.
Continuity mistake: The name on Travis' helmet switches between 'Ryer' to 'Travis' several times throughout the movie.
Continuity mistake: When Tim goes to the house and Kate falls off her horse, they go inside. When she leaves you can hear a car engine start. If she rode her horse to the house how did she get her car there?
Continuity mistake: When the lawyer, Laura, is in her room in two scenes, one of which is when she checks on a letter almost at the end of the film, her hair is lighter than the rest of the movie, where her hair is noticeably darker.
Continuity mistake: Sean is standing by a window when Ray throws a chain through it and the chain wraps around Sean's neck. The following scene has Sean being pulled through the window, breaking away all the glass and the wooden dividers. When the scene cuts to the outside and the kids looking at Sean being pulled away, two broken wooden window sections have managed to regenerate and are visible from both the right and left sides of the window frame.
Continuity mistake: When Luke brings Caroline back to the house after knocking her out, Violet demands to know where Ben is. In this shot her tears are black because of the mascara, but in the next shot all her blackened tears have disappeared.
Continuity mistake: As Kristy is being loaded into the trunk of the car, the bottom of her feet are perfectly clean. She was running barefoot all night through blood, dirt and mud so her feet should be filthy.
Continuity mistake: When the bikers ride through the zombie infested town for the first time watch when Big Daddy is shot at. The windows behind him are shattered by the bullets but a few seconds later are fully intact. This may be hard to see as it is dark but they are back, easiest way to tell is by the reflection from across the street. (00:08:50)
Continuity mistake: When John Bell has blood coming out of his mouth, his left hand is covered with blood. When the camera shot switches it is his right hand that is covered in blood. Then when the shot switches back to the first angle the left hand is back to being the hand that is covered in blood.
Continuity mistake: When Dodger and Owen are talking outside the Halloween party, Dodger's cape is over her right shoulder. When Owen walks away after they finish talking, her cape is pulled back, off her shoulder.
Continuity mistake: When Maddie and the others are trapped in the silo, there are a lot of locusts that have landed on the structure, but there is also a huge number of locusts flying through the air all around. After they electrocute the locusts, there's not a single live locust to be seen anywhere, even though all the insects that were not directly on top of the metal building should have survived.
Continuity mistake: When Cookie is outside on the toilet, when she sits down she has no hair hanging over her right shoulder. When it cuts her hair is hanging over her right shoulder.
Continuity mistake: When Rudy reach out his hand and introduces himself to Jack, we see Jack holding his hands down. When it cuts he has his left hand by his mouth. (00:17:35)
Continuity mistake: When David is writing about Emily needing more time, etc. you see three lines in the close-up of him writing. When he picks up his hand and notices the spot on his palm there are 5 lines of writing on the paper. (00:17:45)
Continuity mistake: During the final rave scenes, just before the group enters the rave, Jenny is given a regular sized revolver. When she finally shoots Jeremy in the head, the revolver she takes from her pocket is much smaller than the one she was given.
Continuity mistake: When Kelly Brook trips over the sofa in the hallway you see her fall and as she gets up you can see a blue thong, 00:07:24. Now when you see her later on in the film when she is sitting by the dining room table with Dennis Hopper eating when she gets up she is wearing purple lacy underwear 01:02:26. Later on when she is fighting the man with glasses from under the bed, when you see him pulling her legs in order to get her out from under the bed you see her wearing black knickers 01:19:32 or you can get a better shot at 01:19:33. Now all the characters of this film are supposed to be trapped and when they're kidnapped the clothes they're wearing should be what they wear for the whole film.
Continuity mistake: In the scene where they ask Tina about what went on while she was in the tunnels, there are several shots where you can see her right hand covered in blood. But when they show a close up of them cutting the same hand to see if she's infected by the fungus, you can see that her hand is slightly dirty but without a trace of blood.
Continuity mistake: In the deer scene the deer breaks the window but the next shot shows the window unbroken.
Continuity mistake: When Tuffy's son is killed, you see his shoe fly by the camera, with his severed foot still inside. Shortly after, when you see the shoe again, it is empty, and simply covered in blood.
Continuity mistake: Near the end of the film, when Ranger boss Rick Bailey drives up to the ranger station, the licence plate number on his Jeep is 39697, but when Ranger Danielle crashes it into the cave, it's 37504.