Continuity mistake: When Polka-Dot Man hurts Starro's leg, its minions cry out in pain as well in unison, but they do it holding their knee or thigh in one shot, their ankle/calf in the next. (01:53:00)
Continuity mistake: Maddox has blue eyes as a teenager and dark brown eyes as an adult.
Continuity mistake: The width and height of the (CGI) flames in George's burn barrel varied with who/what was being filmed (e.g, George sitting or standing). (00:17:45 - 00:20:27)
Continuity mistake: When Fenn finds the doll in the tree trunk cavity, shadows are cast in several different (contradictory) directions. If Fenn's shadow was in front of him, he was walking west toward the dead tree; north would be to his right. Examples: The tree's trunk and one branch were casting shadows to the south moments earlier and Geary and the tree were casting shadows to the northwest a little later. Geary's shadow was cast westward when Fenn took his photo with the doll. (00:04:28 - 00:06:47)
Continuity mistake: Although the amount of alcohol remaining in the bottle had been slightly reduced, the reduction was too negligible to have filled the Game Master's glass to the level shown after his telephone call to Sienna. (00:06:57 - 00:08:46)
Continuity mistake: Helen's slipper is at about a 45° angle toward the right of the screen when Miss Willoughby finds it. When Detective Jimmy shines his flashlight on the slipper, it is facing the opposite direction. The second time Jimmy shines the flashlight, the slipper is at a steeper angle. (01:00:33)
Continuity mistake: The dead rabbit was thrown onto its left side with its back almost parallel to the table's edge (width) and its nose/head almost in the corner. There was a bowl of several brown eggs several inches away from the rabbit's stomach. When the camera shifts, the rabbit's head has shifted at an angle away from the corner, its rear feet are slightly hanging over the table's edge (length), the bowl of eggs is touching the rabbit's stomach, and the eggs are piled on the opposite side of the bowl. (00:05:35)
Continuity mistake: The way the pink blanket was folded/draped over Motley's head when he was hiding in the second row seat of Danny's truck changed at least two times. The folds were also different when Jed got into the front passenger seat. Motley wasn't supposed to be moving, so it wouldn't make sense for him to have rearranged the blanket himself. (00:10:35 - 00:11:10)
Continuity mistake: The bull horns and skull attached to the front of Doug's SUV were much larger on his way to the site than when he pulled up to the meeting spot. Initially, the horns spanned past the low beams, but were some distance from the low beams on each side when he arrived. The overall size of the skull was noticeably smaller and looked less menacing. (00:20:03 - 00:20:35)
Continuity mistake: Danny's car is shown going over the cliff twice - before and after Danny shoots himself. Right before going over the first time, Danny is shown with his right hand on the steering wheel but the second time with his right hand on the rifle (which is pointed toward his neck). (00:32:22)
Continuity mistake: After Diane lit and switched her cigarette to her right hand (and off-camera), most front views of her left arm showed it in front of her, along her stomach, but rear views showed her holding the cigarette in her left hand with her arm more perpendicular to her stomach. Whether her left elbow was fully on the table or over the edge also varied numerous times. (00:08:00)