Im 24 years old and I had to really concentrate to understand this movie. I'm so shocked it's a U. It is very clever and interesting. There was a bit in the movie where they go through some doors to get to the other side and that really freaked me out when they started turning into shapes and going all disformed... I think children could find that freaky too. I wont be showing this movie to my 2 & 4 year old children because its too confusing for them. Btw the film came on the telly on a chanel I left on. I didn't choose to watch it but yeah. Just a very weird movie I think.