Continuity mistake: Just as the well kicks for the first time, the drill shack gets covered in mud. The camera changes to a wide shot outside the shack and it's no longer covered in mud. (00:48:50)
Character mistake: The Master of Psychology Degree from Tulane University has a spelling mistake. School of Political Sciences is spelt 'Scineces'. (00:54:05)
Continuity mistake: When Sook-Hee is standing outside in the rain before leaving, she is shown holding an umbrella whilst it rains. She walks over to say goodbye, whilst still holding onto it. A second later, she leans in to kiss a baby on the head, and the umbrella is no longer there. It is shown later that she placed the umbrella on the ground, but she was not shown doing this earlier in the scene. It just disappears in between shots. (00:02:20)
Character mistake: In the newsreel during the growing tensions, a newspaper headline featured with great importance goes like this; "ABUCTED son not yet found." (00:04:30)
Continuity mistake: After the mercenaries kill everyone in the desert, there are two guys looking at them using two monitors. The pencil below them changes from white to blue.
Continuity mistake: When the three girls decide it's high time to make their own sorority, they begin to jump all over the place excitedly. Nora for the greater part of the scene has worn big pink glasses on top of her head, but they are in her hand as the jumping ensues. However, cut to Dustin shouting at them from the door, and Nora's glasses are back on her head. (00:12:25)
Other mistake: Kassidy drives up to the drive through in the rain. In the next shot the ground beneath her car is dry. (01:29:00)
Other mistake: During the opening traffic jam dance scene, many of the cars have dented roofs and hoods from previous takes.
Continuity mistake: Rafe has just met the bumbling fool that is his principal: as Leo sneaks out of the building to meet them, behind Rafe a girl wearing white and pink is walking past them and getting into school. Several seconds later as the principal has already begun lecturing Rafe, the camera is back on him and the same girl is again walking behind him and getting to school. (00:07:30)
Revealing mistake: When Austin goes to write the Roman numeral "XVII" on the chalkboard, the erased numerals from a previous take are still visible where he's about to write it. (00:41:36)
Continuity mistake: When Holland shows the bartender the dollar bill in the shape of a shirt, he is smoking a cigarette before he takes the cigarette out of his mouth. Holland mentions to the bartender that he made it himself, with nothing in his mouth, but in the next shot, the cigarette is suddenly back. (00:09:45)
Continuity mistake: When Sang-hwa is holding onto the first zombie he comes into contact with, he grabs onto the zombie's hair and some of its hair is in the gap between Sang-hwa's thumb and finger. In the next shot, that hair in between his fingers is no longer there. (00:25:45)
Continuity mistake: In the final scene between Harrison and Katherine. Her pearl necklace starts tucked into her dress, then out while she says "You too, Mr. Harrison", and then back in. (01:56:36)
Revealing mistake: When Gabby and Fin are hanging off the building in Las Vegas, you can see that Gabby isn't holding on to anything in some close-up shots. (00:11:47)
Continuity mistake: When Lockhart sits down to talk to the manager, the glass of water goes from half full to almost entirely full between shots. (00:20:30)
Continuity mistake: In the footage inside the bathroom at Pope's, Kevin Hart is wearing a different sash from the rest of the party scene (or more likely, the same one but inside out by mistake). It's particularly obvious when he looks out of the window and the two patterns alternate depending on the camera. (01:04:50)
Continuity mistake: Bill Pope just went off the stolen bike and is descending the stairs to the tube; people around him change completely between shots (he moves past a short haired woman dressed in black that is a few steps ahead of him, too). (00:03:50)
Continuity mistake: When Nadine and Erwin are playing golf, Erwin is standing right next to the hole when he kicks his ball into it, but in the next shot, he is suddenly standing a couple feet away from it. (00:35:30)