Visible crew/equipment: When we first see Mrs. Paley coming through a door, reflected on the shiny surface of the door is a boom mic.

Continuity: When they start running from the moving wall Jerry grab Sasha holding her left hand. When it cuts he is holding her right hand.

Revealing: When Becky meets Simon in the cube, they hug, then Simon literally stabs Becky in the back. As she falls down to the floor, her black shirt reveals not only some of her chest, but part of a black microphone wire.

Audio problem: When Simon opens the portal to discover Jerry walking upside down, Jerry is saying things like "Do you need a hand there? You're upside down", yet his mouth doesn't move at all.

Continuity: When Maguire grabs his suitcase and is about to open it, we can see his left foot stretched out on the floor. When it cuts to a close-up of him opening the suitcase we can see his foot is crouched.

Visible crew/equipment: When Mrs. Paley opens one of the portals, she sees herself getting killed by Simon, then Simon getting his head taken off by something. Then the portal door closes, and a camera and crewman are reflected in the portals shiny surface.

Visible crew/equipment: When Sasha says "I wish I had your spirit" to Kate when Kate is climbing up to open a door, you can see the reflection of the boom mike moving as Kate is climbing.

Continuity: When they are lowering Colonel Maguire down after his suicide attempt, Max is looking down to his left. When it cuts he is looking down to his right.

Visible crew/equipment: When we see first Kate open a door, it opens, and she leaves her hand up, then slowly lowers it. Look to the left of the cube-shaped doorway, and you can see in the room behind her, the edge of a stand or table or some equipment, which obviously shouldn't be seen there.

Continuity: The properties of the writing on Kate's arm changes throughout the film. The "60659" changes in various scenes. Sometimes the handwriting differs, or the darkness of the writing changes to being fainter, or vice versa.

Continuity: At the end of the movie when Kate is killed from behind, the number and positioning of soldiers in front of her is completely different in the shots immediately before and after Kate's death.

Continuity: When Simon jumps into the room where Maguire is attempting his suicide it cuts to a shot from above and we see Maguire's foot is hanging over Max's foot. When it cuts Maguire's foot is out of sight.

Continuity: When Jerry marks the door with "5" he place his palm flat on the wall. When it cuts, his fingers are bent.

Continuity: When they are lowering Maguire, Jerry is holding onto Maguire's jacket behind his shoulder. When it cuts Jerry's hand is in front of Maguire's shoulder.

Continuity: When Simon meets up with the "second" Jerry he throws him to the floor making Jerry almost falling through the door. Then Simon grabs Jerry with his left arm, but when it cuts he is holding onto Jerry with his right arm.

Revealing: When Kate decides to ditch Maguire and escape herself, we get a shot from above showing her face and Maguire's feet. However we only see his trousers. His feet are gone. Even though some could say that the wall removed them, but we can also see that the wall hasn't reached the part of the feet that are missing. It appears the CGI team forgot to add his feet in.

Visible crew/equipment: When we first see Kate, she opens a door, and then, she climbs through. As she climbs through, you can see down her blouse, and you can see a microphone.

Continuity: In one scene Jerry draws a cube with his watch. There's then another shot, then in the next shot of Jerry, the cube drawn is totally different from what he drew a minute ago.

Continuity: At the end, when Kate is standing on the edge of the exit of the Hypercube, you can see her through the exit in the shots from below. In the shots from the top however, the black door of the exit is still closed.

Continuity: When Kate walks over to the silver frame and says "It's Jerry's diagram," all the numbers which were previously written, appear on the frame. However the "9", which should be on the bottom of the frame behind her, is missing.