Adventure
AI: THE SOMNIUM FILES - nirvanA Initiative
Give it 20 hours
Gets good by 20h then rated almost like by veterans
Fully opens up by 35h rated like by long-time players
Reach the ending at least 83% of players who started
Started playing 79% of owners
Steam reviews 86% positive of 3,804
What the data shows
- In the first 2 hours 1 in 4 reviews are negative (24%); after 35h it's 1 in 10 (10%).
- Fully opens up by hour 35.
- Few early reviews, so this is a rough estimate.
- At least 83% of players who start reach the ending.
- 79% of owners got the first achievement.
When it gets good
Share of positive reviews by how many hours the reviewer had played when writing the review.
before it gets good opening up fully opened up
Based on all 3,813 Steam reviews in every language. Median playtime in a sample of 299 reviews: 27.3h for positive, 25.5h for negative. Almost every game is rated lower in the first 2–3 hours: that window includes refunds and quick first impressions. What matters is how deep the dip is and how fast the game recovers.
Where players quit
Share of players who started the game and reached each story milestone. 100% is the most common achievement (79% of owners), so people who bought the game and never launched it don't count.
- Started playing 100%
- Determination Mizuki Chapter 0Clear Ryuki's SomniumWake from your dream. Achieve enlightenment. 100%
- Egoism Ryuki Chapter 1Clear Chikara's SomniumObsessed with yourself and your own opinion. Never back down. Most players quit here 92% −8
- Nirvana Ryuki Chapter 2Clear Tokiko's SomniumReach true enlightenment. 89% −4
- Persona Ryuki Chapter 3Clear Komeji's SomniumTo have an outer face and an inner face. A false heart. 85% −4
- Svabhava Ryuki Chapter 4Clear Shoma's SomniumThe name is the reality, the reality is the name. 83% −2
- Causality Ryuki Chapter 4Clear Amame's SomniumCause and effect. An unlucky fate. 82% −1
- Untethered Ryuki Chapter 5Clear Iris's SomniumTo be free from everything. 81% −1
- Rainbow Mizuki Chapter 1Clear Kizuna's SomniumColor in the clouds. A sign of good fortune ahead. 79% −2
- Vajra Mizuki Chapter 2Clear Gen's SomniumSolid, unbreakable, stoic. 78% −1
- Inevitability Mizuki Chapter 3Clear Masked Woman's SomniumThere is no need to hesitate, there is only one destination. 77% −1
- Ill-fated Mizuki Chapter 4Clear Tearer's SomniumTo suffer from an undying grudge, a permanent sense of loss and misfortune. 76% −1
- Sisyphean Mizuki Chapter 4Clear Lien's SomniumThe suffering of unfulfilled dreams, achievements that can never be achieved. 76% −1
- All's Right With The World Mizuki Chapter 5Clear Amame's SomniumGood begets good, evil begets evil. 74% −1
- Komeji and Shoma END Clear Komeji/Shoma route. ≥83% +8
story milestone ending (most common ending) biggest drop-off
Story milestones were labeled by AI from achievement names and descriptions; mistakes are possible.
All achievements (49)
story milestone ending side
- Determination Mizuki Chapter 0Clear Ryuki's SomniumWake from your dream. Achieve enlightenment. 100%
- Nu-Folk Anthem Ryuki Chapter 1. Listen to Ryuki's weird song. No idea where he got that from. 94%
- Egoism Ryuki Chapter 1Clear Chikara's SomniumObsessed with yourself and your own opinion. Never back down. 92%
- Nirvana Ryuki Chapter 2Clear Tokiko's SomniumReach true enlightenment. 89%
- Persona Ryuki Chapter 3Clear Komeji's SomniumTo have an outer face and an inner face. A false heart. 85%
- Svabhava Ryuki Chapter 4Clear Shoma's SomniumThe name is the reality, the reality is the name. 83%
- Komeji and Shoma END Clear Komeji/Shoma route. 83%
- Causality Ryuki Chapter 4Clear Amame's SomniumCause and effect. An unlucky fate. 82%
- Untethered Ryuki Chapter 5Clear Iris's SomniumTo be free from everything. 81%
- Explosion END Clear Explosion route. 81%
- Rainbow Mizuki Chapter 1Clear Kizuna's SomniumColor in the clouds. A sign of good fortune ahead. 79%
- Vajra Mizuki Chapter 2Clear Gen's SomniumSolid, unbreakable, stoic. 78%
- Surviving Hell's Kitchen Mizuki Chapter 2Perform rank 3 cooking skill 3 times during Gen's Somnium. 78%
- Inevitability Mizuki Chapter 3Clear Masked Woman's SomniumThere is no need to hesitate, there is only one destination. 77%
- Ill-fated Mizuki Chapter 4Clear Tearer's SomniumTo suffer from an undying grudge, a permanent sense of loss and misfortune. 76%
- Sisyphean Mizuki Chapter 4Clear Lien's SomniumThe suffering of unfulfilled dreams, achievements that can never be achieved. 76%
- Gen and Amame END Clear Gen/Amame route. 75%
- Kizuna and Lien END Clear Kizuna/Lien route. 75%
- Informant: Persons Collect all Persons files. 75%
- Informant: Appendix Collect more than 90 Appendix files. 75%
- All's Right With The World Mizuki Chapter 5Clear Amame's SomniumGood begets good, evil begets evil. 74%
- Resolution END Clear Resolution route. 74%
- Destination Atami END Ryuki Chapter 3Go to Atami with the Receptionist. 70%
- Case Closed: Blackout Amusement Mizuki Chapter 4Clear the VR section perfectly. 67%
- 閭｡陜ｶ荵句､｢邱ｨEND Clear Ryuki Chapter Diverge. 63%
- Case Closed: Corpse Transport Mizuki Chapter 1Clear the VR section perfectly. 61%
- Kunoichi vs. Mad Scientist Mizuki Chapter 3. Clear M1 route with no game over and no QTE fails during Masked Woman's Somnium. 54%
- Case Closed: Amame's Actions Ryuki Chapter 4Clear the VR section perfectly. 52%
- All-Japan Shoe Toss Champion Mizuki Chapter 1. Toss your shoe with maximum power during Kizuna's Somnium. You're a champion! 51%
- Case Closed: Mystery at Yoyagi Mizuki Chapter 2Clear the VR section perfectly. 49%
- YOU FOUND IT! Clear the 3rd Class Cabin.No death game this time. 47%
- Informant: Trivia Collect more than 50 Trivia files. 45%
- Courtesy Chocolate Mizuki Chapter 4Give chocolate to the Detective, Officer, and Shoma.Give me one too please. 45%
- Quiz King Ryuki Chapter 4Clear all quizzes during Amame's Somnium.It's not rigged, is it? 40%
- A...do...roo...ster... Ryuki Chapter 4. Almost get cursed by Adorooster during Shoma's Somnium. The chicken curse... 39%
- Case Closed: Horadori Institute's Holding Cell Mizuki Chapter 3Clear the VR section perfectly. 37%
- He Who Shall Not Be Named Chat with the Inspector during Ryuki Chapter 0, 4, and 5 and Mizuki Chapter 0, 2, 4, and Epilogue. 36%
- High Inquisitor Mizuki Chapter 5Find all evidence perfectly during Amame's Somnium.Your accuracy is astounding! 28%
- Case Closed: Dead at Dvaita Ryuki Chapter 1Clear the VR section perfectly. 26%
- Stan Boss. Inspect every object in Boss's room.My room is in the same state. 23%
- Case Closed: Daring Escape at Naix Ryuki Chapter 2Clear the VR section perfectly. 21%
- An Awkward Halloween Mizuki Chapter 0. In Ryuki's Somnium, wear the pumpkin, loafers, and metal pipe. Shibuya style. 21%
- Kusemon Master Ryuki Chapter 5. Hatch the Black and White Bear and the Wanderer during Iris's Somnium. 21%
- Hanako's Nightmare BAD END Mizuki Chapter 5See Hanako during Amame's Somnium.Having any dark dreams of late? 20%
- Gacha Got Ya Collected all [Adult]-type Eyeballies. 20%
- Powergamer Collect more than 20,000 eyeballs.Thank you for picking them all up! 17%
- Cornea Collector Find all the hidden eyeballs in Somnium.You're the master of hide-and-seek. 15%
- Informant: Dream Album Complete the Dream Album. 14%
- nirvanA Initiative Get all achievements 13%
Steam page Updated: 2026-10-19.