To clarify, the answers for this can go either way: games that got off with a lighter rating than they should have and games that had a heavier rating when they shouldn't.
To give my examples:
Here in the UK, Star Wars: Jedi Survivor received a 12, whereas Jedi: Fallen Order got a 16, despite the fact that Survivor is way more violent overall, with human dismemberment and everything.
On the other side, it's kind of wild that Hello Neighbour got an E10+/7 rating when it deals with some dark, heavy themes and is overall pretty spooky despite the wacky art style. Same goes for FNaF too; sure, there's no explicit gore or anything but again, one might expect the lore, themes and scare factor throughout the series would earn it an M rating.
To give my examples:
Here in the UK, Star Wars: Jedi Survivor received a 12, whereas Jedi: Fallen Order got a 16, despite the fact that Survivor is way more violent overall, with human dismemberment and everything.
On the other side, it's kind of wild that Hello Neighbour got an E10+/7 rating when it deals with some dark, heavy themes and is overall pretty spooky despite the wacky art style. Same goes for FNaF too; sure, there's no explicit gore or anything but again, one might expect the lore, themes and scare factor throughout the series would earn it an M rating.