Continuity mistake: When Ryan and his date sneak into Max and Annie's house, Ryan knocks over some plants, spilling dirt all over the counter in front of it. It briefly cuts to Max, and when it cuts back, Ryan has put the plants back upright but almost all the dirt has vanished from the counter. It's totally impossible for him to have cleaned up all the dirt in the mere second-or-two that passed between shots.
Continuity mistake: When Max and Annie are talking about whether to invite Gary to game night, after Annie says that Gary has got worse after his divorce, Max turns and looks at her RIGHT before the shot ends. But in the very next shot, suddenly he is facing down and away from her.
Continuity mistake: When Gary points out that Max and Annie have three bags of Tostitos chips, watch the bag in Max's hands. Before Gary says his line, everything is pushed down relatively far, with only the very top few inches of the chips and some celery visible. After Gary's line, when it cuts back to Max and Annie about two seconds later, suddenly the chips and celery are all sticking much higher out of the bag.
Continuity mistake: Max's shirt (left arm) is dripping with blood while the crew is at Gary's house, and he (Max) is using Gary's computer. Later in the movie there is no blood on his shirt.
