I/O (visual novel)

I/O

Developer(s)	GN Software
Publisher(s)	^JP Regista
Platform(s)	PlayStation 2
Release date	^JP January 1, 2006
Genre(s)	Science fiction, Mystery, Visual novel
Mode(s)	Single player
Rating(s)	CERO: 15

I/O (アイオー, Aiō^?) is a Japanese science fiction visual novel produced by GN Software. It was released exclusively for the PlayStation 2 on January 1, 2006 in Japan. I/O was written and directed by Takumi Nakazawa, the writer and director for KID's infinity series, such as Ever17. Other well-known members of the staff include Romeo Tanaka, the writer of Cross Channel, and dōjin musician Onoken.