Ao Oni: from Rpg Maker 2003... to the Cinema

The Animation anime film revealed the character designs, cast, and story.
Ao Oni is a Japanese survival horror game with RPG and puzzle elements. Although each version differs heavily from the others, the objective is always the same. Locked in a mansion, you explore and solve puzzles while running from an enigmatic demon. It’s made with Rpg Maker.

It’s free and you can download it here.

The film, in comparison to the currently airing television anime comedy series, will be closer to the traditional mystery horror of the original game, although it will have a new story that is different from the original game, novelization, and live-action films.
The independently developed freeware game gained a cult status online in Japan, gaining notoriety on websites such as Niconico and YouTube where Ao Oni-related videos exceeded 50 million views in 2013.

The popularity of the game revolves around the effectiveness of its horror aspects despite being a simple game, with the background music often being cited as a key contributor to the chilling atmosphere used to incite fear.

The story takes place in a suburban town by a mountain forest. The five members of the high school's folklore research club are trying to think of ideas for the culture festival when they discover a former member's collection of research notes from 40 years ago. The legend described in the notes resembles a popular free game called "Ao Oni," so they choose the game as their culture festival theme. They are able to meet with the game's creator, but shortly afterward the creator dies mysteriously. The club members are investigating the mystery at the school when the door shuts and they find themselves locked inside.

The film is slated to open in 2017.