Children are skewered by oversized teeth, characters are stabbed with knives, and a gun is used in a scary fantasy scene. Language is also heavy, with multiple uses of "f--k," "s--t," and more. Characters kiss, and there's some sex-related talk.
It chapter 2, I must admit is way worse than the 1st one, it shows things like organs, naked people, suicide and stabbing but I think it's still an amazing movie!!! I would say 13+ because it is really upsetting at some points (no spoilers) and it includes skulls and lots of swearing.