AI: The Somnium Files
- First release
- Sep 17, 2019
- Publisher
- Spike Chunsoft, Numskull Games
- Engine
- Unity
- Genres
- Adventure, Puzzle, Visual Novel · Mystery, Action, Science fiction, Thriller
Attributes
Details
Storyline, release dates, time to beat, age ratings, modes, links, keywords
- Storyline
AI: The Somnium Files is a mystery adventure and visual novel set in a near-future Tokyo. Players take on the role of Kaname Date, a detective with a secret police unit who investigates crimes using an experimental technology that lets him dive into the dreams of witnesses and suspects. Aided by an artificial intelligence named Aiba housed in his prosthetic eye, Date is drawn into a chilling serial-killer case that begins with a gruesome murder. As he alternates between examining crime scenes and exploring surreal dream worlds for hidden clues, the branching investigation gradually pulls him toward buried secrets connected to his own lost past.Read more
AI: The Somnium Files is a mystery adventure and visual novel set in a near-future Tokyo. Players take on the role of Kaname Date, a detective with a secret police unit who investigates crimes using an experimental technology that lets him dive into the dreams of witnesses and suspects. Aided by an artificial intelligence named Aiba housed in his prosthetic eye, Date is drawn into a chilling serial-killer case that begins with a gruesome murder. As he alternates between examining crime scenes and exploring surreal dream worlds for hidden clues, the branching investigation gradually pulls him toward buried secrets connected to his own lost past.
- Release dates
- PC (Microsoft Windows)
- Sep 17, 2019
- PlayStation 4
- Sep 17, 2019
- Nintendo Switch
- Sep 17, 2019
All 7 release dates
- PlayStation 4
- Sep 19, 2019
- Nintendo Switch
- Sep 19, 2019
- PlayStation 4
- Sep 20, 2019
- Xbox One
- Sep 30, 2021
- Time to beatIGDB · recorded
- Main Story
- 19h
- Main + Extras
- 22h
- Completionist
- 25h
- Game modes
- Single player
- Perspective
- First person, Third person
- Where to buy
- External links
- Steam (opens in a new tab)Wikipedia (opens in a new tab)Twitch (opens in a new tab)X (opens in a new tab)Facebook (opens in a new tab)Instagram (opens in a new tab)YouTube (opens in a new tab)Bluesky (opens in a new tab)Official site (opens in a new tab)
- Keywords
- neo noir, detective, tokyo
At a Glance
- Critic Score
- 86
- Main Story (IGDB)
- 19h
- Main + Extras (IGDB)
- 22h
- Completionist (IGDB)
- 25h
Overview
Steam review summary
Steam users rate this Very Positive, 8,924 reviews in all languages, recorded 19 October 2026
Valve's summary of Steam user reviews. Valve counts only reviews from purchases on Steam, not key activations, and leaves out review periods it has marked as off-topic. It isn't part of the CritScore score.
Review summary: SteamSteam data provided via the Steam Web API (opens in a new tab)Not affiliated with Valve →
How it plays
From Steam
- Visual Novel
- Anime
- Mystery
- Story Rich
- Detective
- Adventure
- Gore
- Sci-fi
Steam content notes
- Frequent Violence or Gore
- General Mature Content
Steam's content categories for this game, based on what the developer told Steam. They aren't an official classification, and the game may include content they don't list.
Tags and content notes: SteamSteam data provided via the Steam Web API (opens in a new tab)Not affiliated with Valve →
Languages
- Englishinterface, audio, subtitles
- 中文 (简体)interface
Language data: IGDB · recorded 25 Oct 2026
Features
Input and devices
- Partial controller support
- PlayStation 4 controller support
- Steam Remote Play on phone
- Steam Remote Play on tablet
Steam features
- Steam Achievements
- Steam Cloud saves
- Steam Family Sharing
Feature data: SteamSteam data provided via the Steam Web API (opens in a new tab)Not affiliated with Valve →
Steam Deck
Valve rates this game Playable · recorded 19 Oct 2026
Check on Steam →Steam Deck compatibility data: Valve, via the Steam Web APISteam data provided via the Steam Web API (opens in a new tab)Not affiliated with Valve →
Media
Screenshots
Videos
Community
Player reviews
Be the first to review
Behind the game
Credits
Director
Credits from Wikidata (opens in a new tab) (CC0) · checked
Correct or remove a credit (email privacy@critscore.app)Story & setting
Setting
- Set in Tokyo
From Wikidata (opens in a new tab) (CC0) · checked
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About storefront and compatibility information
Compatibility, feature and availability information shown on this page is recorded from the storefronts and services named against each fact, on the dates shown. Steam and the Steam logo are trademarks of Valve Corporation; Steam data is provided via the Steam Web API. Other product and service names are trademarks of their respective owners. CritScore is not affiliated with, endorsed by, sponsored by or certified by Valve Corporation or any other storefront or platform holder, and does not itself test or certify any game.
