Continuity: In the scene where the Aunt flags down the cop car, the cop has his seatbelt on as the plant starts coming in the car to grab him and the car. He jumps out of the car without ever undoing his seat belt.

Continuity: When the insect sits on the windowshield of the car Robin Williams says that the insects can't make a hole, they are safe, then the insect makes a hole, the car drives away creating havoc on the road because of extreme bad driving. The car stops, they get out, then there is no hole in the windowshield.

Continuity: When Robin Williams and the cop are in the police car, they crash through the store (that the other three are in) because the brakes are cut. A few minutes later, the cop drives by the lady and stops without any problem. (You do see the cop pour some fluid into the car, but it would not affect the brakes, because you can actually see the hole in the brake line when they are trying to stop for the first time.)

Factual error: When it's 1968 we see a boy (I'm not sure which one so you'll have to look) riding a Shwinn Sting-Ray Krate Grey Ghost. That bike didn't come out until 1971 and they only made them that one year.

Continuity: In the scene with the monkeys causing chaos in the kitchen, a monkey throws three knives at the kids. Two of them stay in the door, but one bounces off and only makes a nick in the wood. Later in the film, when Robin Williams is in the kitchen, and he blocks the door, you can see that the two knives that were stuck in the door are still there, but the nick in the wood has gone.

Continuity: When Peter runs out of the attic to the woodshed to get the axe, to the left of the attic door is a large filing cabinet, with nothing in front of it or beside it. Yet later when Peter is swinging the axe at the spiders, and following shots, a green suitcase has appeared in front if it.

Continuity: When Alan is trying to get Jumanji back from the pelican, he grabs a fish from the water, and his sleeve becomes soaking wet. In the next shot his sleeve is bone dry.