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AI: The Somnium Files

AI: The Somnium Files

Play as detective Kaname Date on the case of an elusive serial killer in this thrilling, sci-fi murder mystery.

Released Sep 17, 2019 Developer Spike Chunsoft Co., Ltd. Platforms Windows Visual NovelAnimeStory RichMysteryDetective
View on Steam ↗ $19.99 (US · as of 2026-07-26)

What players say

Steam review score and the most-helpful voices, which may include critical ones. Data as of 2026-05-20.

91.6%positive8,364 reviews
Recommended · 18 found this helpful

“I learned Japanese by going into this game cold, looking up everything everyone said, and then adding each new kanji I saw into Ringotan which tests you on handwriting them from memory. I can now handwrite some 3000 kanji from memory, and comprehend an extremely high amount of…”

— a player, Steam review · 93 hrs played
Recommended · 13 found this helpful

“I feel like I have a good chunk of visual novels under my roster but I cannot believe that I did not pick up AI: The Somnium Files sooner. I would never have guessed in all my years alive that I would be actively praising a 30-year-old detective who is also a straight-up gooner.…”

— a player, Steam review · 36 hrs played
Recommended · 11 found this helpful

“really ♥♥♥♥♥♥♥ good. the story is amazing and the humor is actually pretty funny. it also handles going from funny to serious really well too.. its also pretty easy to 100% which is nice. overall 9.5/10”

— a player, Steam review · 22 hrs played
Read more reviews ↗

Player activity

Monthly average concurrent players. Live count fetched 2026-07-24 00:45 UTC · history via SteamCharts.

40playing at last check
6424-hour peak
983all-time peak
0 250 500 2020 2021 2022 2023 2024 2025 2026 452 avg · Sep 2019

Achievement stats

Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-07-25.

45achievements
40.6%median completion
7.9%rarest: AI: THE SOMNIUM FILES
79.4% of players 70.0% of players 63.1% of players 51.4% of players 50.3% of players 48.8% of players 47.4% of players 47.2% of players 45.7% of players 45.3% of players 45.3% of players 45.0% of players 44.9% of players 44.8% of players 43.7% of players 43.6% of players 43.3% of players 41.2% of players 40.8% of players 40.8% of players 40.7% of players 40.7% of players 40.6% of players 39.9% of players 35.7% of players 35.6% of players 35.5% of players 33.5% of players 32.8% of players 29.5% of players 27.0% of players 24.3% of players 23.8% of players 23.2% of players 22.8% of players 18.4% of players 16.2% of players 15.3% of players 14.9% of players 13.9% of players 12.1% of players 11.1% of players 9.8% of players 9.1% of players 7.9% of players 79.4% 0% most earned rarest
Almost everyone has
79.4%BRaiN: Memories Hidden in Dreams — Hidden achievement
70.0%Dream Documentation Duty: Intern — Hidden achievement
63.1%PaiN: Mother, Blood, and Secrets — Hidden achievement
Rarest badges of honor
7.9%AI: THE SOMNIUM FILES — Obtained all other trophies.
9.1%Dream Album Analyst — Collected all the "Dream Album" files.
9.8%Dream Documentation Duty: CEO — Hidden achievement

Price tracking

US-region pricing (USD), sampled twice daily by our own tracker since 2026-07-11. Steam prices vary by region — always confirm your local price on Steam.

$19.99current · sampled 2026-07-26 08:39 UTC
$19.99lowest since tracking began2026-07-11
US19.99 USD
EU19.99 EUR
UK15.99 GBP
Australia29.50 AUD
Canada25.99 CAD
Japan2,200 JPY
Brazil72.50 BRL
China90.00 CNY

Regional prices at last sample, in local currency — Steam sets each region's price independently.

China≈$13 Japan Brazil Canada US Australia UK EU≈$23

Cheapest → most expensive, converted to USD at ECB reference rates (2026-07-24). Relative comparison only.

$0 $25 $50 07-11 07-13 07-16 07-19 07-22 07-26

Latest official news

Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.

Jul 25, 2025
No Sleep For Kaname Date - From AI: THE SOMNIUM FILES Available Now!

No Sleep For Kaname Date - From AI: THE SOMNIUM FILES is now available! No Sleep For Kaname Date - From AI: THE SOMNIUM FILES https://store.steampowered.com/app/2752180 No Sleep For Kaname Date - From

Jul 16, 2025
Kaname Date's Dreamy Drama Theater: Another World

A short anime that loosely introduces No Sleep For Kaname Date – From AI: THE SOMNIUM FILES! That Time I Got Reincarnated Into A Puzzle Game🧩 Here's Kaname Date's Dreamy Drama Theater Ep. 5! Car-kun m

Jul 08, 2025
Kaname Date's Dreamy Drama Theater: Driving School

A short anime that loosely introduces No Sleep For Kaname Date – From AI: THE SOMNIUM FILES! CARname Date's Dreamy Driving Thea- 🤔🚘 Kaname Date's Dreamy Drama Theater Ep. 4 is here! I sure hope Iris k

Jul 01, 2025
Kaname Date's Dreamy Drama Theater: 24 Hour Policing

A short anime that loosely introduces No Sleep For Kaname Date – From AI: THE SOMNIUM FILES! ABIS, OPEN UP!!💥🚪 Kaname Date's Dreamy Drama Theater Ep. 3 takes us STRAIGHT to Matsushita Diner to questio

Jun 24, 2025
Kaname Date's Dreamy Drama Theater: Cooking Class

A short anime that loosely introduces No Sleep For Kaname Date – From AI: THE SOMNIUM FILES! LET. HER. COOK😤👩‍🍳 Here's Ep. 2 of Kaname Date's Dreamy Drama Theater! Maybe cooking got Iris abducted in t

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From our knowledge graph — ranked by shared traits, not a black box. Each card says why it's here.

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Screenshots

Official Steam store screenshots — click any shot to enlarge.

Facts & details

From the Steam store record, snapshot 2026-05-20.

GenresAdventure
Player tagsVisual Novel · Anime · Story Rich · Mystery · Detective · Adventure · Gore · Sci-fi · Comedy · Multiple Endings · Choices Matter · Violent (SteamSpy community voting)
FeaturesSingle-player · Steam Achievements · Steam Trading Cards · Partial Controller Support · Steam Cloud · Remote Play on Phone · Remote Play on Tablet · Family Sharing
LanguagesEnglish * , Japanese * , Traditional Chinese *
Achievements45
Estimated owners200,000 – 500,000 (SteamSpy)
Minimum system requirements (PC)

Minimum: Requires a 64-bit processor and operating system OS *: 64-bit Windows 7 Processor: Intel Core i7-3770 @ 3.40 GHz or better Memory: 4 GB RAM Graphics: NVIDIA@ GeForce@ GTX 460 or better DirectX: Version 11 Storage: 20 GB available space Sound Card: DirectX compatible soundcard or onboard chipset Additional Notes: 2 GB VRAM