Continuity mistake: In the end when the Kothoga is on fire and chasing Margo, it catches up to her in moments. However, everytime it dramatically changes angles, the Kothoga appears a lot futher away than it was previously, but soon after catching up once again. Noting her progress in the room, this situation is not simply replaying the same scene from different angles. Plus when she gets to the water tank, she has plenty of time to spare to hit a lever, climb the device, and jump in before the Kothoga looms overhead.
Continuity mistake: in the scene where the cop car is over taking the runaway car you can see the front bumper of the runaway car and it's in perfect condition however earlier you see them take it off. in the next shot its back to normal
Revealing mistake: After the accident Frank is climbing the hill towards the train. There are several paths of footprints through the fresh snow. One to the left and another up the path he is climbing.
Continuity mistake: When Joe realises that Jimmy isn't turning up at the park he goes to a pay phone, puts the red notebook down with the spine faceing to the right and starting phoning the FBI. In the next shot the the notebook has rotated 90 degrees with the spine now facing the wall. (01:06:45)
Factual error: In early scenes, Lieutenant Commander Ramirez is wearing insignia for Lieutenant, not Lieutenant Commander. Later scenes have him wearing the correct insignia.
Revealing mistake: Whilst Mima is opening the letters, there is a shot where she is sitting on her bed in the foreground of shot, and the TV is playing in the background of shot. On the shelf below the television is a game console with two controllers on top of it. The animation for the controller on the right is very weird. The right side is drawn longer than the left side, and its positioning on top of the console makes it appear as if it is hovering above it. (00:10:47)
Continuity mistake: In the scene where the protagonist is first broken out of jail, at the end of the chase scene with the last two police cars. When they hit the ramp and crash, it is two earlyish model Crown Vics. Before they crash, it is one early model Vic, and one (what was a) late model Crown Vic in 1996.