I/O cover

I/O

First release
Jan 26, 2006
Developer
Regista
Publisher
GN Software
Genres
Adventure, Visual Novel · Drama, Mystery, Science fiction, Romance
Platforms
PlayStation 2

I/O is a Japanese sci-fi mystery visual novel developed by Regista set in a near future Japan, where you play one out of four protagonists and try to uncover the mystery surrounding the killing spree in Megalopolis Tokyo.

Attributes

No Attributes added.

Details

Storyline, release dates, time to beat, age ratings, modes, links, keywords

Storyline
Monday, April 26, 2032 AD. 00:12 AM. Megalopolis Tokyo. A total lunar eclipse occurs for the first time in 3 years. Even though it's supposed to be a simple astronomical phenomenon, it soon sets off a series of unexpected events. Unexplainable mysteries, terrorist incidents, and network crime surge as if in unison. The truth mixes with lies as if the world is awake but still sleeping. Something has begun. Somewhere no one can see. Something no one knows about. This is a story of the chance meeting and tragic parting of the young men and women living in this world. And thus... "The beginning is the end, and the end is the beginning"Read more

Monday, April 26, 2032 AD. 00:12 AM. Megalopolis Tokyo. A total lunar eclipse occurs for the first time in 3 years. Even though it's supposed to be a simple astronomical phenomenon, it soon sets off a series of unexpected events. Unexplainable mysteries, terrorist incidents, and network crime surge as if in unison. The truth mixes with lies as if the world is awake but still sleeping. Something has begun. Somewhere no one can see. Something no one knows about. This is a story of the chance meeting and tragic parting of the young men and women living in this world. And thus... "The beginning is the end, and the end is the beginning"

Release dates
PlayStation 2
Jan 26, 2006
Age ratings
CERO C
Game modes
Single player
Perspective
Text
Keywords
cyberpunk, surrealism, dystopian, future, mythology
… All 19, female protagonist, multiple protagonists, multiple endings, hacking, japan, philosophy, depression, christian themes, corporation, terrorism, transhumanism, male protagonist, multiple route mystery, suspense

How it plays

Languages

  • 日本語interface, audio, subtitles
IGDB · recorded 3 Oct 2026

Language data: IGDB · recorded 3 Oct 2026