Chaos;Head is a Japanese visual novel where you follow Takumi Nishijo, a high school student who stumbles onto a murder scene. After that encounter, more killings follow in his area, and he's caught between what's real and what might be delusions in his own mind. The game uses a system that lets you trigger positive or negative delusions at key moments, shaping how Takumi perceives events around him. It's the first entry in the Science Adventure series. Expect a psychological thriller focused on paranoia and unreliable perception rather than action. The story plays out through text and static images with branching paths based on your delusion choices. If you're after mystery with a disturbed protagonist questioning his own sanity, this fits.
