On his 21st birthday, Jackie Estacado gets possessed by an entity known as The Darkness. After getting into trouble with the Mafia, Jackie finds himself on the run, trying to protect the people most important to him.
A survival horror doujin adventure game by Team GrisGris. It tells the story of a group of students trapped in a haunted elementary school. Originally released for the PC-98 in Japan back in 1996, it was not released in the Western world until 2011.
Laplace no Ma (literally "Laplace's Demon") is a Japanese video game released in 1987. The player character must investigate the death of two boys who were found near the entrance of a mansion.
Absolutely horrifying game and a nod to Lovecraftian horror. Wish more similar games came out.