Continuity: When we see Derek land on the rock after taking the fall down the cliff, behind the rock he landed on there is grassy hills and then some big rocks. Later when they say birds were the only thing he can relate to, it shows a shot of Derek covered in gulls, but now the huge rocks in the background scenery have gone, and in addition, the position of his legs have changed too.

Continuity: As he rolls down the cliff, one of Derek’s shoe fall off, but they’re both back on when we see him land on the rock.

Visible crew/equipment: When Derek plunges down the cliff, he lands on a rock, but if you watch carefully it‘s very apparent that two hands belonging to a crewmember throw a pair of fake legs over the rock.

Continuity: In close-ups, the gun that drops from Barry’s pocket is sitting on a piece of wall plaster that fell off when he got attacked by the aliens in the shed. However the gun isn’t there in any wide shots.

Visible crew/equipment: When the collector is checking his map, you can see a crewmember reflected in the small window and the shiny sliver window edge.

Continuity: As Barry puts the body of the alien into the grass, his right shoe is clearly visible with no blood on it. In the next shot though, he says he should ring his strides out, we then see his right shoe covered in blood.

Revealing: Derek skids to a stop (on a road which is covered in gravel) - you can see a set of white tire tracks (kind of white skidmarks in the gravel, if you know what I mean) in the exact same place where he screeches to a stop. Multiple takes anyone?

Revealing: When Derek awakes on the rock, he obviously headbashes a gull made of wood. It is very fake, may be deliberate (This could be a "deliberate revealing."), but is a mistake nonetheless.

Visible crew/equipment: In a wide side shot of Derek driving the blue van thingy, you can see the front roof frame of the car reflected in the back window, which is driving along with it, filming this part of the film.

Continuity: When Derek is holding onto the rope at the cliffs, we see the alien cut the rope. Later we see Derek holding onto the rope again.

Audio problem: When Barry realizes he is out of bullets, he runs away. It cuts to the aliens running after him. You can see one of the aliens fire at him, but you can't hear any gunshot.

Continuity: When all the aliens are eating from the bowl of vomit, one of the aliens has vomit around his mouth before eating from the bowl.

Continuity: When Derek shoots a hole through an alien, the alien falls over him almost going to the ground. When it cuts, the alien's head is side by side with Derek's head.

Revealing: When Derek kicks the alien which has been cut in half, you can see the ground beneath the alien move making it obvious the lower part of the alien is buried in the ground.

Audio problem: When the camera is filming Barry from behind, he is talking about the alien and says "He must have been going somewhere". You can see his mouth isn't moving.

Visible crew/equipment: When Frank is listening to the alien leader and realizes the entire town is stuffed into the boxes, he goes back to the rest of the guys. When he closes the door, the shadow of the camera man is visible on the door. Shadows from crew members are visible in this same room several times.

Continuity: When Robert manages to free himself from the collector's car, he keeps running after the car. He grabs the bumper which falls off. Robert falls to the ground beside the bumper. When it cuts, he has moved away from the bumper.

Revealing: When the collector gets into his car, he tries to close the car window. Robert puts his hand through the window. The collector manages to close it well enough to trap Robert's hand and takes off in his car. From a camera view outside the car, you can see the window isn't closed enough for Robert's hand to be trapped.

Continuity: In the vomit section: when they take the bucket to the boss, there are pieces of food on the top of vomit although they weren't there when they toke the bucket off, and the amount of vomit seems to be always the same when they drink it.

Continuity: When blood is splattered on Derek´s glasses from the alien hanging in the rope, he turns away and in the next scene the blood is gone.