Chaos;Head, stylized as Chäos;HEAd, is a Japanese visual novel developed by 5pb. and Nitroplus with gore, psychology, and science fiction elements that was released on April 25, 2008 for the PC. A port of the game, named Chaos;Head Noah , for the Xbox 360 console is currently in development and is slated for release on February 26, 2009. The game is described by the development team as a "Delusional Science NVL". The game's premise revolves around a high school student named Takumi Nishijō who unknowingly walks into the scene of a gruesome murder on his way home. More mysterious events starts happening afterwards as more gruesome murders occurs in the area. Takumi struggles to cope with reality and the delusions he experiences as he tries to avoid getting caught by the perpetrator behind the chain of murders.
The game's story has been adapted into a manga that started serialization on May 21, 2008 in ASCII Media Works' shōnen manga magazine Dengeki Daioh. A second manga adaptation that focuses on Sena Aoi and Kozue Orihara began serialization in Media Factory's seinen manga magazine Monthly Comic Alive on August 28, 2008. It has been decided for this adaptation to be a side story to the original visual novel. A third adaptation will begin serializing in Jive's shōnen manga magazine Comic Rush magazine on September 26, 2008.The anime adaptation of Chaos;Head was announced in the September 2008 issue of Comic Alive. The anime began airing in October 2008 and is produced by Madhouse.
Informations Source: Wikipedia