White Day: A Labyrinth Named School (화이트데이: 학교라는 이름의 미궁). The story of a young man's trip into school at the dead of night to deliver some candy in preparation for the Eastern Holiday of the same name, White Day (the South Korean/Japanese equivalent of Valentine's Day) to 'So-yeong', a girl at school he likes, and to return the diary she left behind. Finding himself locked up soon after entering, escaping the school now becomes a nightmare...
Scarier than Amnesia... Right now making a let's play of it, and I have to say this game is terrifying! It's long, has alot of complicated puzzles but the atmosphere is... oh god... If you are looking for a game in which you crap yourself, this is your game.