4. Reverse Hills - Shin Megami Tensei IV
This game is like a "devilish Pokemon", so you can expect many strange things, especially the creatures (some are very creative), but the story is something else: it can be very boring, at least until you reach the mission "Kill Yuriko", then the story takes sinister turns, and the most shocking is "The Faces of True Evil" mission. You have to infiltrate the secret labs of boss Tayama (the Yakuza boss of Tokyo), because Yuriko/the demon Lillith asked you to do it, before you consider killing her. Well, you infiltrate the lab, and walk through the halls, and search the rooms, finding very disturbing imagery. You find people in masks indoctrinating children ("The world is beautiful"), or you find people in masks doing...things...to men and women. The game is not that detailed, so you try to figure out what is happening (and you know it's nothing good). Then, you get possession of a red jar that you need to deliver to the last room. You get there, and discover that the jar is carrying brains - human Brains! They are harvesting brains to create pills that calm demons so they don't eat humans, and both factions justify their war in such a manner that you just can't take a side, but you're forced to. This place is so damn sick that I don't want to enter it again. Oh, yeah; New Game +. Ouch.