PCGame

AI: The Somnium Files

Detective visual novel about investigating crime scenes and dreams

Spike Chunsoft Co., Ltd. · Released Sep 17, 2019

Adventure

Reviews
Very Positive
91% of 9,369
Recent reviews
Very Positive
92% of 40 in 30 days
Players
23
daily peak, Nov 7, 2026
Steam Deck
Playable
Last update on Steam
7 years ago
Jul 22, 2019
Minimum PC
GTX 460
4 GB RAM · 20 GB disk
Full requirements

What is AI: The Somnium Files?

A detective adventure and visual novel set in near-future Tokyo. As Kaname Date, you investigate crime scenes and dreams for clues in a serial-killer case. Choices lead to multiple endings.

For you if...

  • +you enjoy following different paths through a mystery
  • +you like crime stories mixed with offbeat comedy

Not for you if...

  • −you want a consistently serious detective story
  • −you dislike timed puzzles based on dream logic

What players say

91% of 9,369 reviews are positive · 92% of 40 in the last 30 days

Players praise the mystery’s twists, characters, and the way clues come together across story routes. The most common complaint is the frequent sexual humor, which some players say undercuts serious scenes. Some also find the timed dream puzzles unclear.

Players over time

▼ -34% vs a month ago

Players online on Steam, one sample a day.

Highest since Sep 2026: 54 players on Sep 27, 2026.

Show the data
DayPlayers
Nov 7, 202623
Nov 6, 202614
Nov 5, 202615
Nov 4, 202619
Nov 3, 202631
Nov 2, 202624
Nov 1, 202628
Oct 31, 202632
Oct 30, 202621
Oct 29, 202624
Oct 28, 202619
Oct 27, 202624
Oct 26, 202618
Oct 25, 202632
Oct 24, 202627
Oct 23, 202632
Oct 22, 202632
Oct 21, 202625
Oct 20, 202630
Oct 19, 202637
Oct 18, 202637
Oct 17, 202628
Oct 16, 202625
Oct 15, 202634
Oct 14, 202634
Oct 13, 202632
Oct 12, 202638
Oct 11, 202646
Oct 10, 202627
Oct 9, 202628
Oct 8, 202632
Oct 7, 202629
Oct 6, 202639
Oct 5, 202640
Oct 4, 202637
Oct 3, 202632
Oct 2, 202635
Oct 1, 202632
Sep 30, 202625
Sep 29, 202646
Sep 28, 202641
Sep 27, 202654
Sep 26, 202642
Sep 25, 202649
Sep 24, 202644
Sep 23, 202636
Sep 23, 202639
Sep 22, 202641
Sep 21, 202638

How many players finish AI: The Somnium Files?

45% of Steam players have unlocked «Mizuki Route: END», the achievement for finishing the main story.

Share of everyone who owns the game on Steam, including those who barely played it. Updated weekly.

Screenshots and trailer

AI: The Somnium Files screenshot 1

AI: The Somnium Files system requirements

Minimum: GTX 460, 4 GB RAM, 20 GB of disk space.

As published by the developer.

Can my PC run AI: The Somnium Files?

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Minimum

OS
64-bit Windows 7
Processor
Intel Core i7-3770 @ 3.40 GHz or better
Graphics
NVIDIA@ GeForce@ GTX 460 or better
Memory
4 GB RAM
Storage
20 GB available space
DirectX
Version 11
Notes
2 GB VRAM

Recommended

Requires a 64-bit processor and operating system

Does AI: The Somnium Files have co-op or multiplayer?

No: single-player only, no multiplayer modes declared.

Does AI: The Somnium Files run on Steam Deck?

Playable Playable: it runs on Steam Deck with some adjustments.

  • The launcher or setup tool may need the touchscreen or virtual keyboard
  • Sometimes shows mouse, keyboard or non-Deck controller icons
  • The native resolution is not the default one
  • All functionality is accessible with the default controller configuration
  • In-game text is legible on Steam Deck
  • Default graphics settings perform well on Steam Deck

PC version details

DRM
None declared on Steam
Controller
Keyboard and mouse
Platforms
Windows
Achievements
45
Steam features
Cloud saves, Family Sharing, Trading cards
Languages
Full audio: English, Japanese. Text only: Traditional Chinese.

Does AI: The Somnium Files use AI-generated content?

No AI-generated content is disclosed on the game's Steam page.

Self-reported by the developer under Steam rules: it covers AI content that ships in the game, not tools used to make it. Steam page checked on Oct 25, 2026. How to filter AI games on Steam

Tags

Games like AI: The Somnium Files