Another vote for Corpse Party. Especially the rusty scissors plot twisty flashback scene...
I'll add a tentative vote for Umineko No Naku Koro Ni, more of the first game instead of Chiru. Episode 3 is probably the worst, i'm fine with the gruesome murders and all to further the game progression but fucking Eva-Beatrice is damn awful. She goes on a psychotic killing spree just murdering Rosa again and again with increasingly elaborate setpieces. She "drowns" her in a sea of jelly for one, not even drowned she exploded from the "water" pressure before that could happen. Worse still, she turns Rosa into a butterfly so she can fly around and have fun in the middle of a typhoon so said butterfly can't control flight to put it mildly, she ends up hurtling into a spider's web and getting eaten alive. That's the worst one.
Though the Tea Party at the end of Episode 2 has a place well up there, Beatrice makes Rosa eat her own relatives. I'm wondering how much that's simple pleasure in violence for Beatrice vs making Battler get back up and fight through sheer shock tactics.
Also Yandere. All of it. From both the psychological horror aspects to just horrific gore I think Yandere wins the thread by a mile. Don't go for Meiko by the way if you're crazy enough to inflict Yandere upon yourself, I fell for the bait because she's the most normal looking of the three but she's just as fucked up. I stopped and immediately uninstalled when she sews her vagina shut with thread and stabs herself in the stomach with a big kitchen knife during sex because her masochism is off the charts. The CG showing it was brutal. Forget cringe, I felt legit disturbed for the rest of the day. I was having to come to terms that Yandere exists. Why, I mean it was an only a matter of time before someone tapped into the yandere character type but an entire game based around that? Why?
