Revealing mistake: John Kramer's chain first goes on the side of his stomach, and then it's on his backside... impossible, otherwise the chain would split him. (01:35:47)
Revealing mistake: Throughout the dive boat interior scene - after they dive on the wreck - various hanging items are swinging around randomly to give the impression the boat is rocking on the water. However, none of the key light shadows - from the exterior sunlight - move at all, indicating the boat is entirely static in a studio.
Revealing mistake: Just as the first credits roll, when the cheerleaders dance, check the African American, Caucasian, and most noticeably, the Asian American people behind the team. They are blatant, creepy-looking, unrealistic CGI characters. (00:01:18)
Revealing mistake: When River and Eden are talking in front of the kitchen window, every other camera shift alternates between different backgrounds - still/blurred versus clear/actively snowing. The props are also different. (00:14:15)
Revealing mistake: In the scene with Dante in his pink robe and pigtails, the dead guy next to him, you can see his nostrils flaring in one scene. (01:06:00)
Revealing mistake: The "horse" in the stall on the left has to be fake. With the exception of a barely visible half-blink, it does not move the slightest when the girl (while handling the reins) walks around its head, and a couple of girls are touching (pretending to be removing) the saddle. (00:29:25)
Revealing mistake: When the oil starts gushing, one can see a rectangle on the ground with different coloured grass, where the pumping mechanism to achieve the effect was buried.
Revealing mistake: When Miller is stopped by police and looks into his side mirror, it looks like the police officer is coming out of the passenger side of his car. The front view shows the officer emerging from the driver's side, like he should be. (00:22:00)
Revealing mistake: Ian stands on the rooftop, with an elevated highway to the right of the screen, some distance from the building. The right-side rear view of Ian reveals the elevated highway much closer, practically against the side of the building. The CGI elevated highway's height compared to the rooftop also varies, being lower when Ian sits, and the support posts are not even flat against the underside of the elevated highway. (00:41:54 - 00:42:20)
Revealing mistake: During the negotiation for the second murder, Happy Anderson writes a "You HOPE she suffered" note, but shreds what looks like a "You HOPED she suffered" note - they are two different handwritten notes. (00:35:00)
Revealing mistake: Alberto forces minor Alan to smoke a cigarette. Alan appears to be puffing on the cigarette, but no smoke comes out of his mouth when he "exhales". At one point, Alan is inhaling and the red tip of the cigarette (prop) blows outward. (00:36:45)
Revealing mistake: Nick is supposed to play the saxophone, and his cheeks are puffed full of air, but they do not move at all. Playing the saxophone requires blowing into the mouthpiece, which moves the player's cheeks, mouth, and lips. (00:57:00 - 01:06:55)
Revealing mistake: While inside the tunnel in Rome, before the yellow Fiat makes a U-turn multiple skid marks from previous takes are visible. Though one might pressume that the marks were already there, they are at the same spot and have the same pattern as the skid marks that the cars make seconds later.
Revealing mistake: The position of the lamp (upright or tilted) to the left of the screen varies, and the way the light is cast on the wall above and below the lampshade is not realistic. For example, when the upper part of the lampshade is angled away from the headboard, the light projects below the lampshade shorter toward the left of the screen, not elongated. (00:01:00 - 00:03:00)
Revealing mistake: The airplane windows on both sides of the aisle are solid white ovals, with no variations to indicate the airplane is moving in the sky. (00:40:30)
Revealing mistake: More than once, when speaking to their robot doubles, it's obvious that both Charles and Elaine are actually just talking to nobody, given their mannerisms.
Revealing mistake: Neither driver, Justine, nor passenger, Billy, were visible in the car when it got spun around by the Jeep. Even if both got bent over from the impact, the upper parts of their bodies should have been visible as they were both erect in their seats when the man opened the door to check on them. Also, the car doors were so smashed in that the man should not have been able to open the driver's door (at least not without some force or "Jaws of Life"). (00:19:25 - 00:19:57)
Revealing mistake: When the Minotaur is born, he doesn't cast a reflection on the building right next to him.
Revealing mistake: There is a glimpse of a bench on the porch landing, roughly parallel to the steps where Jake is sitting with his back at about a 45° angle to the railing. Front views of Jake show the bench oddly angled upward as though it ascends like the steps. (00:38:10 - 00:39:12)
Revealing mistake: After Kristin tramples on the muffin, it should crumble/flatten, but it starts to inflate back into shape. (01:17:45)