Revealing mistake: When the alien creature stabs the rich dude in the skull, supposedly they are in the same room, but behind the xenomorph you can see a background that can't pass for the airplane cabin, looks like a danky cave. Recycled footage from another production. (01:08:35)
Revealing mistake: The co-pilot for some reason is analyzing some "hi-frequency signals" that the computer is picking up. The loop is not fluid though, and you can pick an exact frame when it's not like a chart spikes, it's a movie clip being played that reached the end and is starting from the beginning with a whole different image. (00:20:15)
Revealing mistake: The pilot gets in the car to go to work, and pulls away from the curb. Or rather, from a flat image of a road with a car (shadows and distance from the other parked car are all wrong). (00:03:40)
Revealing mistake: When the two survivors get in front of the emergency door, their hair gives out all sorts of chromakey artifacts. (01:21:00)
Revealing mistake: Mike putts successfully against his opponent and decides to celebrate. He does so by juggling a golf ball; too bad it's a poorly textured CGI golf ball that does not even appear rigid. (01:02:05)
Revealing mistake: When Don leaves the cockpit to check on Jack, now sans tentacle, he walks right to left across spaces on green screen. His walking speed does not match the scrolling of the background. (00:46:45)
Revealing mistake: After bumping her knee, Janet retrieves a real bottle of booze from behind a stack of superimposed CGI bottles. (00:22:00)
Revealing mistake: In the final explosion, the plane loses two of its engines, or rather, a bad superimposed image of each engine that fly at the screen. (01:21:30)
Revealing mistake: When the Alien-like creature chokes the gambling lady with its tongue, the woman has no strangling marks of any sort on her neck. (01:19:10)
Revealing mistake: After the crew decided (rather arbitrarily) to use fire to scare the monsters off, the camera zooms on Jack. The zoom through the plane window is a digital effect with the plane being all CGI, and it shows because the perspective is all wrong. Jack would have never been visible from the window at that distance and at that angle. (00:55:55)
Revealing mistake: When the co-pilot searches for the missing tentacle wielding a hatchet, the creature creeps under the carpet. The distortion from the CGI effect on the rug is easily noticeable. (00:49:40)
Revealing mistake: Jack is lying on the couch (whoever managed to fetch him back from the nest is anyone's guess) with an alien tentacle up his nose. The special effect used to display the invading organism swelling his brains is an obvious image morph that does not look in any way plausible visually alone - let's not even consider the glaring anatomical issues. (00:39:55)
Revealing mistake: During the "green storm", the co-pilot finally gets to her station. Cut to the playroom, and one hilarious CGI bottle of booze spins around in the air being blatantly superimposed. (00:14:30)
Revealing mistake: Twice when both the couples of patrons are shown in their cabin and the camera pans from one to the other, right to left. Both times it's a fake panning shot with the wrong perspective in the CGI rooms, and in the second actual cabin you can even see the green screen. The first time around you can even see a door closed in one room and open in the adjacent one. (00:25:00 - 00:28:50)
Revealing mistake: The cool hi-tech roulette table has trapdoors and a rolling surface and...no it does not. None of that is real, it's all poor CGI. (00:19:00)
Revealing mistake: When the protagonist drives through Las Vegas and then to the airport, all the reflections in his car window are tacked-on post-production effects (obvious lens flare, images superimposed on the frame, etc). (00:03:50)
