Yume Nikki

Yume Nikki is a Japanese surreal horror adventure game developed by Kikiyama. Released in 2004, it follows the story of Madotsuki, a hikikomori girl who explores a dream world accessed through a mysterious notebook. The game is known for its unsettling atmosphere, cryptic narrative, and unique visual style. Yume Nikki has gained a significant cult following and has inspired numerous fan games, artworks, and adaptations.