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A Somnium (plural: Somnia), sometimes called a Dreamworld, is a type of world that exists within the universe of AI: THE SOMNIUM FILES.

Somnia are worlds that exist within the subconsciousness of a person. They are shaped by the dreams and memories of the people in the realm of reality.

The Psync Machine allows the Psyncer to delve into the subject's Somnium and interact with their dream to find information. The appearance and nature of each Somnium is created from memories of the subject.

Somnia Mechanics[]

Mental Locks[]

BRaiN Mental Lock 1

Mental Locks are the core gameplay mechanic of Somnia. In order to extract the truth from the Psync subject, the Psyncer must dive as deep into their mind as possible. The subject's mind is divided into several layers, each of which is protected by a Mental Lock. As such, breaking Mental Locks is required to proceed deeper into the subject's consciousness. Every subject has several Mental Locks, with 3-5 being the standard.

TIMIEs[]

Timie single

TIMIE is a core mechanic feature of Somnia. It allows the player to alter the amount of time spent on any given action, such as cutting the amount of required time in half or reducing/raising the amount of time to a fixed number. While TIMIEs can be very beneficial, there are also negative TIMIEs which increase the amount of time spent on any action-and unlike regular TIMIEs, their usage is not optional, meaning the player has to be careful when taking options that will give them negative TIMIEs.

Keys[]

Key

Keys are a concept introduced in nirvanA Initiative. Keys serve to clarify the rules of a Somnium, or otherwise offer insight into the subject that can help to understand their dreamscape. Keys are unlocked the deeper the player gets in the Somnium. The keys are missing their information when first unlocked, but are steadily filled in as the player investigates objects.

Map[]

Somnium Map

The map details the landscape of a Somnium. It shows all floors of the Somnium, the current location of the Psyncer, and the location of objects that can be investigated. It also shows the name of the Psync's subject and the real-world location that the Somnium is based on. nirvanA Initiative adds the Navigation ability, allowing the player to set waymarks and gauge their distance from objects.

Hidden Items/Eyeballs[]

Hidden Eyeball

The Hidden Items/Eyeballs are a collectable that unlock concept artwork in the FILE or in the Dream Album. They have the same design as Aiba, with a star-shaped pupil and yellow cornea, and a flesh-colored backing. The eyeballs are initially transparent, but become more solid and start emitting particles the closer that the player is to them. In the first game there is only one hidden item in each Somnium, while in nirvanA Initiative there are five hidden eyeballs in each Somnium.

Swimming/Flying[]

Swimming

Swimming/Flying is an alternate way of moving in Somnium that appears in Naixatloz's Intentions and Novel Ingress. Rather than moving across the ground, as one would in the real world, the AI-Ball instead moves through the air of the Somnium, allowing for a greater exploration of the 3D space. The reason for this change in movement is tied to the Psyncer's desires or mental state: for example, Tokiko Shigure has an affinity for flowing water, and so swimming is a core component of her Somnium.

Properties of Somnia and Psyncs[]

Compatibility Rate[]

Compatibility Rates are a concept that are alluded to in the first game. The nature and effect of compatibility rates are unknown, but it is shown that if a Psyncer and subject have a low compatibility rate then it can cause strain on both the Psyncer and the Psync Machine.

Defensive Barriers[]

Defensive Barrier

Defensive Barriers are a property of Somnia that appear in PSYNCIN' IN THE CURTaiN, New Investigation, and Nightmare Irreconcilable. These barriers appear when the subject desperately wants to hide information, and so erects the barrier to either push away or trap the Psyncer. The barriers in CURTaiN and New Investigation are non-permeable, and the Psyncer must break the surrounding objects in order to unlock the barrier. In Nightmare Irreconcilable, the barrier is permeable and instead unlocks more objects to interact with the more that it spreads.

Conscious Anti-Bodies[]

Antibody

Conscious Anti-Bodies are a property of Somnia that can be seen in Nefarious Institute and Nonentity Incognito. Anti-bodies are a representation of the subject's caution: when the psyncer attempts to access information that the subject is trying to hide, the subject's synapse is overstimulated, and they emit norepinephrine which creates the anti-body. Touching the anti-body causes a huge delay spike in the information transfer system, quickly depleting the amount of remaining time in Somnium.

Real-time Countdown[]

Realtime countdown

Real-time Countdown is a mechanic exclusive to Neurotic Inception. The Somnium takes place in a nightmare, where the subject is constantly hunted by a terrifying figure. Whenever the subject needs to hide or sneak around, the usual slowdown of Somnium when the AI-Ball stands in place is removed, and time proceeds at a normal pace. This means the player must think quickly as to where they want to hide or move to obtain their objective.

Shadow Traits[]

Shadow Trait

A false Ryuki, indicated by the lack of shadow

Shadow Traits are a mechanic that feature prominently in New Investigation. Objects in Somnium that display shadow traits lack properties that they have in the real world: for example, fire that does not emit heat. These traits are heavily affected by the malleable, unpredictable nature of dreams, and thus cannot usually be dealt with in a conventional manner. In New Investigation, dealing with items that exhibit shadow traits is required to progress at all in the Somnium.

Somnia Levels[]

The following is a list of all playable Somnia in AI: THE SOMNIUM FILES:

Title Subject Psyncer Location (Real-World)
SINKIN' IN THE BRaiN Kaname Date Aiba* ??? (Sagan Residence)
PSYNCIN' IN THE PaiN Mizuki Kaname Date

Aiba

Merry-go-round (Bloom Park)
PSYNCIN' IN THE VaiN Iris Sagan Kaname Date

Aiba

White Remains (Chemical Plant)

Blue Remains (Chemical Plant)

PSYNCIN' IN THE SWaiN Ota Matsushita Kaname Date

Aiba

Cold Storage Warehouse
PSYNCIN' IN THE SUSTaiN Mayumi Matsushita Kaname Date

Aiba

Matsushita Diner
PSYNCIN' IN THE CAPTaiN Kaname Date Mizuki Date Residence
PSYNCIN' IN THE CURTaiN Inmate #89 Kaname Date

Aiba

Sagan Residence
PSYNCIN' IN THE REFRaiN Boss Kaname Date

Aiba

Ruined Chemical Plant
PSYNCIN' IN THE VILLaiN So Sejima Kaname Date

Aiba

Harbor Warehouse District
PSYNCIN' IN THE MaiN: 1 Iris Sagan Kaname Date

Aiba

Golden Yokocho
PSYNCIN' IN THE MaiN: 2 Iris Sagan Kaname Date

Aiba

Ikume Shrine
PSYNCIN' IN THE MOUNTaiN Hitomi Sagan Kaname Date

Aiba

Okutama Mountains
PSYNCIN' IN THE CHaiN Kaname Date ??? Psync Room and Chemical Plant

The following is a list of all playable Somnia in AI: THE SOMNIUM FILES - nirvanA Initiative:

Title Subject Psyncer Location (Real-World)
New Investigation Kuruto Ryuki Mizuki
Aiba
Interrogation Room and the Cathedral
Reverse:
Mizuki
Reverse:
Kuruto Ryuki
Tama
Reverse:
Date Residence
Nefarious Institute Chikara Horadori Kuruto Ryuki
Tama
Horadori Institute of Genetics
Naixatloz's Intentions Tokiko Shigure Kuruto Ryuki
Tama
Naix Japan President's Office
Need Info Andes Komeji Kuruto Ryuki
Tama
Misetan Department Store rooftop
Nested Insecurities Shoma Enda Kuruto Ryuki
Tama
Enda Residence
Nearly Interesting Amame Doi Kuruto Ryuki
Tama
Studio Dvaita and Sunfish Pocket
Nemesis Identified Iris Sagan Kuruto Ryuki
Tama
Sejima Residence
Nostalgic Idol Kizuna Chieda Mizuki
Aiba
Aioen Orphanage
Necessary Intervention Gen Ishiyagane Mizuki
Aiba
Brahman World Cuisine and Tokyo National Stadium
Neurotic Inception Masked Woman Mizuki
Aiba
Bio Lab (Horadori Institute of Genetics Underground)
Nonentity Incognito Tearer Mizuki
Aiba
Underground Cell (Hostage Room)
Novel Ingress Lien Twining Mizuki
Aiba
Yoyagi Park
Nightmare Irreconcilable Final Subject Mizuki
Aiba
Final Location

Known Psyncs[]

Throughout the story, additional Psyncs occur beyond the playable Somnia listed above. Every known Psync is listed in chronological order below.

(Note: Instances of "Kaname Date" are shorthand for "Hayato Yagyu (Host: Saito Sejima)," and use of italics indicates that the Subject and Psyncer swapped bodies.)

Subject Psyncer Date (Timeline) Machine Used Somnium Name
Rohan Kumakura Hayato Yagyu November, 2013 Psync Machine N/A
Hayato Yagyu
(Host: Rohan Kumakura)
Saito Sejima November, 2013 Prototype Psync Machine N/A
Shoko Nadami Saito Sejima
(Host: Rohan Kumakura)
Late 2018 Prototype Psync Machine N/A
Mizuki Okiura (implied) Kaname Date (implied) Mar 20th-Apr 3rd, 2019 (ARG timeline) Psync Machine PSYNCIN' IN THE PaiN (ARG version)
Saito Sejima
(Host: Iris Sagan)
Mar 27th-Apr 3rd, 2019
(ARG timeline)
Psync Machine (recording)
Saito Sejima
(Host: Iris Sagan)
Unknown Mar 27th-Apr 3rd, 2019 (implied)
(ARG timeline)
Psync Machine (implied) This Is Your Idol
Renju Okiura Saito Sejima
(Host: Shoko Nadami)
November 1st, 2019 Prototype Psync Machine N/A
Mizuki Okiura Kaname Date November 2nd, 2019 Psync Machine PSYNCIN' IN THE PaiN
Iris Sagan Saito Sejima
(Host: Renju Okiura)
November 2nd, 2019
(Branch A)
Prototype Psync Machine N/A
Saito Sejima

(Host: Iris Sagan)

Kaname Date November 3rd, 2019
(Branch A)
Psync Machine PSYNCIN' IN THE VaiN
So Sejima Saito Sejima
(Host: Iris Sagan)
November 3rd, 2019
(Branch A)
Prototype Psync Machine N/A
Ota Matsushita Kaname Date November 4th, 2019
(Branch AA)
Psync Machine PSYNCIN' IN THE SWaiN
Shizue Kuranushi Saito Sejima
(Host: So Sejima)
November 5th, 2019
(Ota Branch)
Prototype Psync Machine N/A
Mayumi Matsushita Kaname Date November 5th, 2019
(Ota Branch)
Psync Machine PSYNCIN' IN THE SUSTaiN
Kaname Date Mizuki Okiura November 6th, 2019
(Mizuki Branch)
Psync Machine PSYNCIN' IN THE CAPTaiN
Shizue Kuranushi Saito Sejima
(Host: So Sejima)
November 4th, 2019
(Annihilation Branch)
Prototype Psync Machine N/A
Rohan Kumakura

(Host: Hayato Yagyu)

Kaname Date November 4th, 2019
(Annihilation Branch)
Psync Machine PSYNCIN' IN THE CURTaiN
Saito Sejima

(Host: Shizue Kuranushi)

Kaname Date November 5th, 2019
(Annihilation Branch)
Psync Machine PSYNCIN' IN THE REFRaiN
Saito Sejima
(Host: Shizue Kuranushi)
Kaname Date November 5th, 2019
(Annihilation Branch)
Psync Machine N/A
So Sejima Kaname Date November 3rd, 2019
(Branch B)
Psync Machine PSYNCIN' IN THE VILLaiN
Rohan Kumakura
(Host: Hayato Yagyu)
Saito Sejima
(Host: Renju Okiura)
November 4th, 2019
(Branch B)
Prototype Psync Machine N/A
Iris Sagan Kaname Date November 4th, 2019
(Branch B)
Psync Machine PSYNCIN' IN THE MaiN: 1
Iris Sagan Kaname Date November 5th, 2019
(Iris Branch)
Prototype Psync Machine PSYNCIN' IN THE MaiN: 2
Hitomi Sagan Kaname Date November 5th, 2019
(Resolution Branch)
Psync Machine PSYNCIN' IN THE MOUNTaiN
Kaname Date Saito Sejima
(Host: Hayato Yagyu)
November 6th, 2019
(Resolution Branch)
Prototype Psync Machine PSYNCIN' IN THE CHaiN
The rest of these continue off Resolution End from the original game:
Chikara Horadori Kuruto Ryuki February 11th, 2020 Psync Machine Nefarious Institute
Gen Ishiyagane Mizuki Kuranushi February 12th, 2020 Psync Machine Necessary Intervention
Yoneharu Enda Kuruto Ryuki February 13th, 2020 Psync Machine Need Info
Shoma Enda Kuruto Ryuki February 14th, 2020
(Komeji/Shoma Branch)
Psync Machine Nested Insecurities
Uru Somezuki Mizuki Kuranushi February 14th, 2020
(Explosion Branch)
Prototype Psync Machine Nonentity Incognito
Iris Sagan Kuruto Ryuki February 15th, 2020
(Explosion Branch)
Psync Machine Nemesis Identified
Kuruto Ryuki Mizuki Date February 10th, 2026
(Explosion Branch)
Psync Machine New Investigation
Kizuna Chieda Mizuki Date February 11th, 2026
(Explosion Branch)
Psync Machine Nostalgic Idol
Tokiko Shigure Kuruto Ryuki February 12th, 2026
(Explosion Branch)
Psync Machine Naixatloz's Intentions
Mizuki Kuranushi Mizuki Date February 13th, 2026
(Explosion Branch)
Psync Machine Neurotic Inception
Lien Twining Mizuki Date February 14th, 2026
(Gen/Amame/Kizuna/Lien Branches)
Psync Machine Novel Ingress
Amame Doi Kuruto Ryuki February 14th, 2026
(Resolution Branch)
Psync Machine Nearly Interesting
Amame Doi Mizuki Date February 15th, 2026
(Resolution Branch)
Psync Machine Nightmare Irreconcilable

Trivia[]

  • The name of the Somnia in AI: THE SOMNIUM FILES are references to the 1929 song, and the 1952 film it inspired, named "Singin' in the Rain." The word "singin'" is swapped for "psyncin'" (with one exception swapping it for "sinkin'"), the last word is replaced with a rhyme to "rain," and all the letters are capitalized except for the "ai" vowel pair at the end of the phrase.[1]
    • The main soundtrack for the game, REVERIES IN THE RaiN, keeps the word "rain" at the end, while switching "Singin'" for "Reveries."
  • The name of the Somnia in AI: THE SOMNIUM FILES - nirvanA Initiative are two-word phrases that have an acronym of "NI", referencing Nirvana Initiative and/or the number 2 (二, Ni), itself a reference to the game's status as the 2nd entry and/or the main thematic number of the game.
  • Currently, there are only six locations that can be visited in the real world of THE SOMNIUM FILES that do not have a corresponding Somnium world: Boss's Office, Kumakura Office, Lemniscate Entertainment Offices, Central Hospital, Marble, and Sekiba High. Marble appeared as part of Golden Yokocho in one Somnium though.
    • Interrogation Room, Sunfish Pocket and Sejima Residence did not have a Somnium world in the game they were introduced in, but did receive one in the sequel.
    • Sekiba High is the only location introduced in nirvanA Initiative that does not have a corresponding Somnium world.

Navigation[]

AI: THE SOMNIUM FILES
Media
AI: THE SOMNIUM FILESAI: THE SOMNIUM FILES DEMORaiNBOW AFFaiR Complete SoundtrackREVERIES IN THE RaiN SoundtrackTHOUGHTS REMaiN BELOW Artbook
Characters
Kaname DateAibaIris Sagan/A-setOta MatsushitaMizuki OkiuraBossPewterNew Cyclops Killer
Hitomi SaganMayumi MatsushitaRenju OkiuraMamaShoko NadamiSo SejimaMoma KumakuraRohan KumakuraCyclops Serial Killer
#89FalcoBodyguardsTakero MatsushitaManaka IwaiSaito SejimaYakuza AYakuza BNurseReceptionistMermaidTaxi DriverInspector
Locations
Tokyo
Chiyoda District: Police Headquarters (Boss's Office; Psync Room; Interrogation Room) • Sunfish Pocket
Koto District: Harbor Warehouse District (Cold Storage Warehouse) • Date Residence
Meguro District: Sagan ResidenceTiefblau
Minato District: Sejima ResidenceKumakura OfficeIkume ShrineLemniscateCentral Hospital
Near Kabasaki District: Bloom ParkOld Chemical PlantMatsushita Diner
Shinjuku District: Golden Yokocho (Marble)
Other: Fuchu City (Fuchu Prison) • Akikawa ValleyOkutama MountainsEitoku High
Somnia
SINKIN' IN THE BRaiN (Spoiler) • PSYNCIN' IN THE PaiN (Spoiler)
PSYNCIN' IN THE VaiN (Spoiler) • PSYNCIN' IN THE SWaiN (Spoiler)
PSYNCIN' IN THE SUSTaiN (Spoiler) • PSYNCIN' IN THE CAPTaiN (Spoiler)
PSYNCIN' IN THE CURTaiN (Spoiler) • PSYNCIN' IN THE REFRaiN (Spoiler)
PSYNCIN' IN THE VILLaiN (Spoiler) • PSYNCIN' IN THE MaiN: 1 (Spoiler)
PSYNCIN' IN THE MaiN: 2 (Spoiler)
PSYNCIN' IN THE MOUNTaiN (Spoiler) • PSYNCIN' IN THE CHaiN (Spoiler)
Chapters
Red Route: sigAIsaikAImeikAIsyokubAIrihAI
youdAIjikAIzugAIsyokuzAI
Yellow Route: syougAIseisAIhiAIsanpAI
Green Route: gumAIjukkAIkikAIjinnAIihAI
Purple Route: keitAIgyoukAIkyuusAIsyuurAIirAIdakkAIkekkAI
Pink Route: kenzAIjutAIkokkAIsousAIhakAIkassAI
Organizations
Tokyo Metropolitan Police Department (Advanced Brain Investigation Squad) • Ujisaki Family (Kumakura FamilyKumakura Estates) • Secret Society NAIXATLOZForeign Mercenaries
LemniscateSunfish PocketMarbleTiefblauFamiSto8-12Elgorg
Items
Wadjet SystemEvolverLight Synaptic Nerve Connection DeviceDate's CarShovelForgeOdoroki-man ChocolateGeostationary Satellite X00639
Events
Chemical Plant ExplosionOriginal Cyclops Serial KillingsBreak-In at Sagan ResidenceNew Cyclops Serial KillingsIncident at Minato District HighwayDisappearance of Renju OkiuraOperation: Iris Rescue
Full List of Events
AI: THE SOMNIUM FILES - nirvanA Initiative
Media
AI: THE SOMNIUM FILES - nirvanA InitiativeHARMOniOUS DISCORD SoundtrackSECRET OF THE WORLD: THE DEFIniTIVE ART BOOK
Characters
Mizuki DateAibaKuruto RyukiTamaMasked Woman (True Identity) • Amame DoiGen IshiyaganeKizuna ChiedaLien TwiningAndes KomejiShoma EndaTokiko ShigureTearerKaname Date
Chikara HoradoriBossPewterMamaIris SaganOta MatsushitaMoma KumakuraJin FurueRiichi Chieda
So SejimaHitomi SaganUru SomezukiMarcoDetectiveInspectorMamoru BodaiNurseChinpei WagaiDokuta YoganoReceptionistTaxi DriverHoradori ResearchersNaix MembersForeign MercenariesPolicemenSpecial Assault Team
Locations
Tokyo

Chiyoda District: Police Headquarters (Boss's Office, Psync Room, Interrogation Room) • Sunfish PocketSekiba High
Chuo District: Horadori Institute of Genetics (Underground, Hostage Room) • Naixatloz Japan Branch (President's Office, Cathedral)
Koto District: Harbor Warehouse DistrictDate Residence
Minato District: Studio DvaitaAioen OrphanageIkume ShrineKumakura OfficeSejima ResidenceCentral Hospital
Shibuya District: Lemniscate Entertainment OfficesYoyagi Park
Shinagawa/Kabasaki District: Matsushita DinerSagan ResidenceEnda ResidenceKabasaki Chemical Plant
Shinjuku District: Golden Yokocho (Marble, Brahman World Cuisine) • Misetan Department StoreTokyo National Stadium

Somnia
New Investigation (Spoiler)
Nefarious Institute (Spoiler) • Naixatloz's Intentions (Spoiler)
Need Info (Spoiler) • Nested Insecurities (Spoiler)
Nearly Interesting (Spoiler) • Nemesis Identified (Spoiler)
Nostalgic Idol (Spoiler) • Necessary Intervention (Spoiler)
Neurotic Inception (Spoiler) • Nonentity Incognito (Spoiler)
Novel Ingress (Spoiler) • Nightmare Irreconcilable (Spoiler)
Chapters
Converge Chapter: A Strange Tale

Side Ryuki:
DispossessedAnyone ImaginesOught to KnowNothing to Be DoneGoFarewell
Komeji and Shoma Route: Joy for AnguishI Found MePast Its Ken
Explosion Route: Smiles for TearsWell-KnownThe Mind of GodNot All A DreamShe Was the Universe
閭。陜カ荵句、「邱ィ Route: 遐エ邯サ逋セ蜃コAll This Happened, More or Less
Side Mizuki:
AlonePass Mildly AwayEnd Where I BegunTravelerLeft BehindThe Expense of Spirit
Gen and Amame Route: All Living ThingsOf Arms and Of ManWho's ThereAll That We Are
Kizuna and Lien Route: Bid the Soldiers ShootSweet Silent Thought
Resolution Route: HellVisionsIn TruthBirthsThe End of CravingBraver Than All Flowers

Organizations
Tokyo Metropolitan Police Department (Advanced Brain Investigation Squad) • AMABIE-TVChieda FamilyHoradori Institute of GeneticsNaixatlozOrder of %
Items
Psync MachineWadjet System • Mizuki's enhanced pipe • EvolverEvolver MC
Bats490Fray to FreeNirvana TrialNirvana XTC-PERGE
Mizuki's ScooterRyuki's Limousine
RobotaRoboji
Events
Half Body Serial KillingsNirvana Initiative
Full List of Events

References[]

  1. Singin' in the Rain on Wikipedia
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