Clair obscure, easily. Silent Hill 2 remake and Inscryption before that. I'm sure I'm forgetting something else in recent memory, but definitely those 3 games.
The stuff's already been watered down for the American M rating which Nintendo's fine with.
The United States not having an IRL equivalent to PEGI 18 or CERO Z has forced studios to make every AAA game on par with PG13 movie content and well below what we get with R rated.
We end up having AO reserved for porn games as opposed to being the equivalent to an R rated film, an EXPLICIT CD or a PEGI 18/CERO Z game.
When China really comes into the picture games will permanently be locked in at that M rating with both China and the US demanding most of the same censorship.
The Middle East will add a few prohibited things to the US/China censorship and the same M rating will be the world standard.
The last one is Steelrising. A re-imagining of the French Revolution where the king deploys an army of robots to crush the revolution. You play as Aegis, the bodyguard of Marie Antoinette sent out to stop them. An event happens (very cool but spoiler) that enables Aegis to take agency of her own decisions.