Continuity mistake: In Kate's hotel room, when she's trying to get away from GW she steps backwards through the hotel room's doorway onto the porch, and falls straight through the broken wood railing, but when GW looks down at Kate on the pile of hay, there's now a window behind GW, not a doorway, and clapboard siding has suddenly appeared on the hotel wall as well.
Continuity mistake: In the end of the movie, Hilts (Steve McQueen) is returned to the camp - he is dirty and his shirt is torn. When he enters the cooler, after being tossed his baseball glove, he is clean and his shirt is no longer torn. (02:49:50)
Continuity mistake: After Melanie has been bandaged up after her attack, she sits up on the sofa, and you can see two large bloody scratches on her cheek. These scratches disappear when Mitch and Lydia walk Melanie outside to the car. (01:51:25)
Other mistake: After there has been the vote for chief, behind one boy you can see a piece of wood reading "Anthony M," a marker for showing where the actor (Anthony McCall-Judson) should sit. (00:13:25)
Continuity mistake: When JB is driving the truck and is being bombed with grenades from the helicopter, the truck gets smoke blackened. But when he arrives at the speedboat, all the smoke marks have gone.
Continuity mistake: Before Kay cuts the mop's handle, the mop is dark brown. After he cuts it turns to vanilla coloured.
Revealing mistake: After a carriage rolls over Midshipman Poop-Decker's sword, he can be seen pushing some kind of trigger with his thumb to make the sword split in two. (00:05:05)
Continuity mistake: When John Davis is approached at the beginning of the movie, he is sitting at a bar table. Depending on the camera angle, he is resting his cheek against a closed fist or his thumb. (00:04:00)
Continuity mistake: Whilst discussing how to split the money, after Finch says "Please don't argue anymore, you're hurting everybody's feelings", Benjy says "Look" and raises his hands upwards. In the next shot, he is suddenly pointing with a finger on his right hand, something he was not doing in the previous shot. (00:30:23)
Revealing mistake: When the arrow hits Medea and Jason pulls it away from her back, she crouches and the prop pad where it was stuck protrudes.