AI: THE SOMNIUM FILES - nirvanA Initiative: Unraveling the Half Body Murders

9/1/2026, 1:35:02 AM

Release date: 6/24/2022

Tags: #visual-novel #mystery #anime #adventure #sci-fi #detective #investigation #futuristic

User Reviews

Score: 86%Very Positive
Review Count: 3,764 reviews
Fetched At: 9/1/2026, 1:35:03 AM

Reference prices

Japan

¥ 660 (JPY)

Steam JP

$5.99 (USD)

Steam Global

Live Store Snapshot

Body text may reflect the state at publication time. For the latest sale, price, and review changes, prioritize the live price panel, review panel, and the Steam store listing.

Japan Price: ¥ 660
Global Price: $5.99
Price in Your Region: ¥ 660-85%Prices as Steam lists them per country. What you are actually charged depends on your Steam account settings.Regional prices checked: 8 Sept 2026
Sale Status: On sale
Price Checked At: 9/9/2026, 2:26:38 PM

The price snapshot and review snapshot differ by about 205 hours. Because they are not always refreshed at the same time, confirm the latest Steam listing before making a purchase decision.

Key highlight

Investigate the bizarre Half Body serial killings as Special Agents Mizuki and Ryuki, utilizing AI partners to delve into dreams and uncover the truth behind the Nirvana Initiative.

Who this is for

Highly recommended for players who crave intricate mysteries, compelling characters, and a unique world. The narrative woven by the two protagonists and their AI partners is sure to captivate you.

Details

Overview

Dive into the chilling world of AI: THE SOMNIUM FILES - nirvanA Initiative, a captivating visual novel that plunges players into a perplexing mystery. Six years ago, a gruesome discovery was made: the right half of a corpse. The left half remained missing, only to surface years later, eerily fresh and undecayed. This bizarre turn of events ignites a new investigation led by Special Agents Mizuki and Ryuki, who, alongside their AI partners Aiba and Tama, must untangle the truth behind the unsettling Half Body serial killings and the enigmatic plot known as the Nirvana Initiative.

Highlights

A Deepening Mystery: Players will investigate the perplexing Half Body serial killings, piecing together clues across two timelines.
Dual Protagonists: Experience the story from the perspectives of two different investigators, Mizuki and Ryuki, each with their own AI partner.
Immersive Investigation: Utilize unique AI abilities to delve into the dreams (Somnium) of witnesses and suspects, uncovering hidden truths.

Who It's For

This game is perfect for fans of intricate mystery narratives, detective stories, and anime-style adventures. If you enjoy thought-provoking plots, engaging characters, and a blend of sci-fi elements with psychological thrills, AI: THE SOMNIUM FILES - nirvanA Initiative will keep you hooked.

Game Info

Developed and published by Spike Chunsoft Co., Ltd., this title offers a rich visual novel experience with strong adventure and mystery elements. It features a compelling sci-fi narrative set in a futuristic world. The game supports multiple languages, including English and Japanese, and is available as a paid title on Steam. Players can also look forward to Steam Achievements and Cloud Saves.