Chaos;Head is a 2008 science fiction visual novel video game developed by 5pb. and Nitroplus. It is the first game in the Science Adventure series. Following the original Windows release, the enhanced version Chaos;Head Noah was released for Xbox 360 in 2009, and has since been ported to multiple platforms. An English localization was released by Spike Chunsoft for Nintendo Switch and Windows in 2022. The game follows Takumi Nishijou, who gets involved in the "New Gen" serial murder case. He frequently experiences delusions and hallucinations, some of which the player can influence, which affects the progression of the story.
Windows cover art, depicting Rimi Sakihata
Takumi having a conversation with Kozue. The delusional trigger system is displayed in the top left and right.
Chaos;Head is set in Shibuya, Tokyo.
Science Adventure is a multimedia series consisting of interconnected science fiction stories, created mainly by Mages, Nitroplus, and Chiyomaru Studio. The main entries mostly take the form of visual novel video games, but side entries span across several different mediums.
Art from a Science Adventure event, featuring characters from the first three main games. Left to right: Rimi (Chaos;Head), Kurisu (Steins;Gate), and Akiho (Robotics;Notes).
In the Steins;Gate games, the player affects the outcome of the story by using the player character's cell phone.
