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AI: The Somnium Files > Guides > Ally's Guides
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100% Appendix List and how to unlock them
By Ally
Do you want to complete the appendix list? Did you search online and couldn't find a guide or a list? Here is a complete list of every appendix and how to get them. Please note due to the nature of the tips, some spoilers may be included.

I have also attached my own screenshots of the completed appendix for you to check what you are missing.
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Created by
Ally
In-Game
Football Manager 2024
Category: Achievements, Gameplay Basics, Secrets, Story or Lore, Walkthroughs
Languages: English
Posted
Updated
5 Jul, 2020 @ 6:17pm
26 Jan, 2021 @ 8:54pm
6,685 Unique Visitors
193 Current Favorites
Guide Index
Overview
Completed Appendix Screenshots 
Appendix Number: 1-20 
Appendix Number: 21-40 
Appendix Number: 41-60 
Appendix Number: 61-80 
Appendix Number: 81-100 
Appendix Number: 101-120 
Appendix Number: 121-142 End 
Guide History 
Comments
Completed Appendix Screenshots
Below are the screenshots from my completed appendix, yours should look like this when you are complete.





Appendix Number: 1-20
Number
Name
How to Unlock
1
ABIS (Abyss)
sigAI - 10:54pm Near the Merry-go-round in Bloom Park - Check Boss - Look
2
ACTH
sigAI - 10:54pm Near the Merry-go-round in Bloom Park - Check Corpse using Zoom, then check her Face
3
BL
saikAI - ABIS HQ, Psync Control Room - check Steel Shelf
4
Evolver
syokubAI - Kumakura Office, first time - unlocks automatically upon finishing the QTE
5
ICU
youdAI - 5:42pm Central Hospital - obtained automatically by entering the scene
6
KE Association
jukkAI - Marble - check Mama and pick “About So and the Kabasaki District...”
7
LGBT
seisAI - Marble, third time - check Mizuki and pick “Do you have a problem with gay people?”
8
NILE
saikAI - Talent Agency Lemniscate - check Ota and pick “Can you provide a detailed account of last night?”
9
N System
meikAI - Near the Merry-go-round in Bloom Park - after exhausting Mizuki’s dialogue, check Past the Brush
10
PEA
gyoukAI - Maid Cafe Sunfish Pocket - check Mermaid and use X-ray, then check her again
11
Psync
saikAI - ABIS HQ, Psync Control Room - obtained automatically upon entering the scene
12
Psyncer
saikAI - ABIS HQ, Psync Room - check Mizuki and pick “”Psync”...”
13
The Mystery of the Prototype Psync Machine
hakAI - Room in Kabasaki District, Abandoned Factory - obtained automatically upon entering the scene
14
SAT
jinnAI - Sagan Residence - check SAT Officer and pick “Boss is the culprit!”
15
SSR
dekAI - Warehouse District - unlocks automatically during first cutscene
16
Dork
saikAI - 9:21pm ABIS HQ, Boss’s Office - check Boss and pick “About “AI””
17
X-ray Mode
sigAI - 10:54pm Near the Merry-go-round in Bloom Park - check the column after inspecting Shoko’s Body
18
Aiba’s Electric Shock Function
dekAI - ABIS HQ, Psync Control Room - unlocks automatically during the ending cutscene
19
Sec
syokubAI - Talent Agency Lemniscate, first time - obtained upon first entering
20
A-set, You Bet!
saikAI - Talent Agency Lemniscate, 2nd time - check A-set and pick “Are you A-set?”
Appendix Number: 21-40
Number
Name
How to Unlock
21
ShovelForge
saikAI - Driving, 1st time - check A-set and pick “Why did you become an idol?”
22
Isis and Iris
dekAI - Near the Merry-go-round in Bloom Park, 2nd time - check Iris and pick “About A-set” 3 times
23
Skanda
dekAI - Near the Merry-go-round in Bloom Park - obtained automatically upon entering the scene
24
Saito in Iris
ihAI - 4:28am ABIS HQ, Psync Room - obtained automatically upon clearing Annihilation End
25
Illuminati
saikAI - 1:12pm Near the Merry-go-round in Bloom Park - check Iris and pick “Why do you think this was a ritual murder?”
26
Doujinshi
saikAI - ABIS HQ, Psync Control Room - check Steel Shelf
27
Aerial Yoga
jutAI - 2:40pm Ikume Shrine - check Mizuki and pick “What are you doing here?”
28
8-12
youdAI - Driving, second time - check Aiba and pick “Any other information?”
29
Iturup Island
syuurAI - Talent Agency Lemniscate - obtained automatically upon entering the scene
30
Epilogue Timing
kassAI - Sagan Residence - check Hitomi and pick “About your right arm...”
31
Emo
syokubAI - Talent Agency Lemniscate, first time - obtained upon first entering
32
Emo-ing
syokubAI - Talent Agency Lemniscate, first time - obtained upon first entering
33
Elgorg
syuurAI - Home - check Iris and pick “About their relation to the Wadjet system”
34
Endorphins
jukkAI - Cold Storage Warehouse, second time - check Pewter and pick “Who is the “murderous psychopath””?
35
Odoin Kyoma
saikAI - Talent Agency Lemniscate - check Ota and pick “How do you know Mizuki?” 2 times
36
Sunfish Pocket Menu
gyoukAI - Maid Cafe Sunfish Pocket - check Ota and pick “Have you seen Renju?”
37
Hippocampus
seisAI - 5:34pm Kumakura Office - check Rookie cigarette
38
Corneal Turbidity
sigAI - 10:54pm Near the Merry-go-round in Bloom Park - check Corpse using zoom, then check her Right Eye
39
National Research Institute of Police Science
youdAI - Cold Storage Warehouse - check Policeman and pick “Aren’t you cold?”
40
Institute of Sciences
seisAI - Cold Storage Warehouse - check Bloodstain 2 times
Appendix Number: 41-60
Number
Name
How to Unlock
41
Spider Crab
seisAI - Kumakura Office - check Rookie cigarette
42
Kabaddi
youdAI - Sejima Residence - check Bodyguard and pick “Do you know Iris Sagan?”
43
Capsaicin
seisAI - Sejima Residence, second time - obtained automatically upon entering the mansion
44
Volatile Solvents
saikAI - Talent Agency Lemniscate, second time - check A-set and pick “About A-set”
45
Show No Mercy...
dekAI - Warehouse District - check Moma and pick “Summarize the scene”
46
Savior
syuokubAI - Talent Agency Lemniscate, second time - check Ota and pick “About Renju’s case” 2 times
47
Trunk
sigAI - 10:54pm Near the Merry-go-round in Bloom Park - check Corpse using Zoom, then check Body
48
Kunashir Island
syuurAI - Talent Agency Lemniscate - obtained automatically upon entering the scene
49
Client
jukkAI - Dark Room - obtained automatically upon entering the cutscene
50
Cloud Storage
saikAI - Talent Agency Lemniscate, second time - after the blackmailing, check A-set and pick “What are you doing?”
51
Shizue Kuranushi
hiAI - 2:29pm Central Hospital - check Mizuki and pick “About Date’s “soul”...”
52
Gluten free
jutAI - 2:40pm Ikume Shrine - check Mizuki and pick “What are you doing here?”
53
Stage 4
kenzAI - Sagan Residence - check Hitomi and pick “How long has she been sick for?”
54
Metropolitan Police Department Headquarters
saikAI - ABIS HQ, Boss’s Office - check Boss and pick “I see you still haven’t cleaned this place up...”
55
Blood-Brain Barrier
syuurAI - Cold Storage Warehouse, second time - check Iris and pick “Do you know about the BBB?”
56
TOA
saikAI - 1:12pm Near the Merry-go-round in Bloom Park - check Iris, exhaust her dialogue, and pick “Why do you think this was a ritual murder?” 2 times
57
Saliva DNA Test
seisAI - Warehouse District - check Aiba and pick, “Kumakura Office?” in response to where to get So’s DNA
58
Koteka
meikAI - ABIS HQ, Psync Control Room - check Steel Shelf
59
Connectome
kyuusAI - ABIS HQ, Psync Control Room - check Pewter and pick “What is the “ego algorithm” you mentioned?” 3 times
60
Collage
gumAI - ABIS HQ, Psync Control Room - obtained automatically upon entering the scene
Appendix Number: 61-80
Number
Name
How to Unlock
60
Collage
gumAI - ABIS HQ, Psync Control Room - obtained automatically upon entering the scene
61
Cortisol
sigAI - 10:54pm Near the Merry-go-round in Bloom Park - Check Corpse using Zoom, then check Face
62
Conflict
syuurAI - Cold Storage Warehouse, second time - check Iris and pick “Here’s how Psync works” 2 times
63
Conspiracy to Commit Murder
zugAI - 10:04am ABIS HQ, Interrogation Room - obtained automatically when starting the scene
64
Sub
saikAI - Talent Agency Lemniscate - check Ota and pick “Kick him”
65
Sun Poke
kassAI - Maid Cafe Sunfish Pocket - check Sign
66
Judge, Jury, and Executioner
jukkAI - Warehouse District, second time - obtained automatically upon entering the cutscene
67
Shikotan
syuurAI - Talent Agency Lemniscate - obtained automatically upon entering the scene
68
Sink
saikAI - Talent Agency Lemniscate, second time - after the blackmailing, check Ota and pick “Something wrong?”
69
Puncture Wound
sigAI - 10:54pm Near the Merry-go-round in Bloom Park - check Corpse using Zoom, then check Body
70
Wine and Underwear Are Best When Aged
dekAI - Warehouse District - unlocks automatically during the second cutscene
71
Aphonia
saikAI - ABIS HQ, Boss’s office - check Boss and pick “About Mizuki...”
72
Swiss Army Knife
seisAI - Marble, third time - check Mizuki and pick “What’s in the backpack?”
73
Juro
syuokubAI - Talent Agency Lemniscate, second time - check Ota and pick “Where have you been?”
74
Jurisdiction
sigAI - 10:54pm Near the Merry-go-round in Bloom Park - Check Policeman
75
Insanity
gyoukAI - Kumakura Office - check Moma and pick “When was Rohan hospitalized?”
76
Standalone
jukkAI - Warehouse District, second time - obtained automatically upon entering the cutscene
77
BFF
syuurAI - Maid Cafe Sunfish Pocket - check Mermaid and pick “About your relationship with Mizuki...”
78
Geostationary Satellite
syuurAI - Home - check Iris and pick “What is X00639?”
79
Mass Hysteria
dekAI - Ikume Shrine - check Iris and pick “Listen to her story”
80
The Woman in So’s Somnium
kassAI - Sejima Residence - check So and pick “About the chemical plant eight years ago...”
Appendix Number: 81-100
Number
Name
How to Unlock
80
The Woman in So’s Somnium
kassAI - Sejima Residence - check So and pick “About the chemical plant eight years ago...”
81
Kabasaki Distract
jukkAI - Marble - check Mama and pick “About So and the Kabasaki District...” 2 times
82
Delirium
kenzAI - Sagan Residence - obtained automatically upon entering the scene
83
Soki Soba
seisAI - Home, second time - obtained automatically upon entering the scene
84
Osiris’s Resurrection
dekAI - Near the Merry-go-round in Bloom Park - check Iris and pick “About A-set” 2 times
85
Somnium
saikAI - ABIS HQ, Psync Room - check Mizuki and pick “”Psync”...”
86
Time in Somnium
PSYNCIN’ IN THE PaiN - obtained once either path is cleared
87
Mafia
dekAI - Marble - check Mama and pick “About the armed men...”
88
Estate Housewife’s Cooking
jinnAI - Sagan Residence, second time - obtained automatically upon completing the first QTE
89
Underground
saikAI - Driving, 1st time - check A-set and pick “Why did you become an idol?”
90
Space Advocacy Group
syuurAI - Home - check Iris and pick “What is X00639” 2 times
91
Shoot!
syuurAI - Matsushita Diner - check Iris and pick “About the Parallel world,” your RPS choice does not matter
92
History
keitAI - ABIS HQ, Psync Control Room - obtained automatically upon entering the scene
93
Central Hospital
saikAI - ABIS HQ, Boss’s Office - check Boss and pick “About Mizuki...”
94
Sup Girl/Blow Those Boys Away
syuurAI - Maid Cafe Sunfish Pocket - check Iris and pick “Do you know this mermaid?”
95
Diss
saikAI - Talent Agency Lemniscate - check Ota and pick “Kick him”
96
Pupil Dilation
sigAI - 10:54pm Near the Merry-go-round in Bloom Park - check Corpse using Zoom, then check Right Eye
97
Dopamine
jukkAI - Cold Storage Warehouse, second time - check Pewter and pick “Who is the “murderous psychopath””?
98
Anthropic Principle
syuurAI - Matsushita Diner - check Iris and pick “100 million balls” 2 times
99
Internet Café
syuokubAI - Talent Agency Lemniscate, second time - check Ota and pick “Where have you been?”
100
Posterior Pituitary Gland
jukkAI - Cold Storage Warehouse, second time - check Pewter and pick “Who is the “murderous psychopath””?
Appendix Number: 101-120
Number
Name
How to Unlock
100
Posterior Pituitary Gland
jukkAI - Cold Storage Warehouse, second time - check Pewter and pick “Who is the “murderous psychopath””?
101
Buggy
seisAI - Marble, first time - obtained automatically when entering the scene
102
Jaco
saikAI - Driving, 1st time - check A-set and pick “Why did you become an idol?”
103
Bastet
dakkAI - 7:05pm ABIS HQ, Psync Control Room - find Pewter in the locker, then ask Iris “What’s that cat on your waist?”
104
Habomai Islands
syuurAI - Talent Agency Lemniscate - obtained automatically upon entering the scene
105
We Party
syokubAI - Talent Agency Lemniscate - check Mizuki and pick ”Do you know this receptionist?”
106
Mystery of Hitomi’s Visits to #89
kassAI - Sejima Residence - check So and pick “Why did #89 want you to contact Shoko?”
107
Cower
seisAI - Cold Storage Warehouse - obtained automatically upon entering the scene
108
Dom-P
saikAI - 9:21am, ABIS HQ, Boss’s Office - check Boss and pick "About the case six years ago…" 2 times
109
FamiSto
youdAI - Cold Storage Warehouse, second time - check the Station Wagon
110
Fugu Eggs
syuurAI - Matsushita Diner - check Ota, pick “Where’s your mom?”
111
Shoulder to Shoulder
dekAI - Warehouse District - check Moma and pick “Summarize the scene”
112
Freemasons
saikAI - 1:12pm Near the Merry-go-round in Bloom Park - check Iris, exhaust her dialogue, and pick “Why do you think this was a ritual murder?”
113
Eye of Providence
saikAI - 1:12pm Near the Merry-go-round in Bloom Park - check Iris, exhaust her dialogue, and pick “Why do you think this was a ritual murder?”
114
Dust Explosion
jinnAI - Sagan Residence, second time - obtained automatically upon completing the second QTE
115
Peptide Hormone
jukkAI - Cold Storage Warehouse, second time - check Pewter and pick “Who is the “murderous psychopath””?
116
Bolt Action
hakAI - Kabasaki District, Abandoned Warehouse, second time - check the Hitomi, then pick “Pull the trigger” 5 times
117
Head Office
meikAI - ABIS HQ, Boss’s Office - check Boss and pick “About Renju” then “About the incident six years ago...”
118
Investigation Expenditures
kassAI - Ikume Shrine - check Iris and pick “How are you?”
119
Main Branch Careers
dekAI - ABIS HQ, Psync Control room - check Pewter and pick “Why was Boss not present at #89’s interrogation?”
120
Marbled Flounder
syuurAI - 4:43pm Talent Agency Lemniscate - check Iris and pick “To where the dragon is” and wait until the introduction at the Kumakura Offices is done
Appendix Number: 121-142 End
Number
Name
How to Unlock
120
Marbled Flounder
syuurAI - 4:43pm Talent Agency Lemniscate - check Iris and pick “To where the dragon is” and wait until the introduction at the Kumakura Offices is done
121
I Cannot Even
syokubAI - Talent Agency Lemniscate, first time - obtained upon first entering
122
Eyelash Extensions
jutAI - 2:40pm Ikume Shrine - check Mizuki and pick “What are you doing here?”
123
Meuchi Spike
saikAI - ABIS HQ, Psync Room - check Mizuki and pick “Let’s go get some unagi”
124
“Jobs”
saikAI - 9:21am, ABIS HQ, Boss’s Office - check Boss and pick "About the case six years ago…" 2 times
125
Single-Edged Sharp Object
jutAI - Cold Storage Warehouse - use X-ray on the Body and check it 3 times
126
Puncturing Instrument
sigAI - 10:54pm Near the Merry-go-round in Bloom Park - check Corpse using Zoom, then check Body
127
Jung
syuurAI - Matsushita Diner - check Iris and pick “The bouba/kiki effect?” 2 times
128
Heart to Heart
dekAI - Warehouse District - check Moma and pick “Summarize the scene”
129
Reload
hakAI - Kabasaki District, Abandoned Warehouse, third time - check the Hitomi, then pick “Pull the trigger” 5 times
130
Lemniscate5
saikAI - Driving, 1st time - check A-set and pick “How did you start working for Lemniscate?”
131
Gig
saikAI - Driving, 1st time - check A-set and pick “Why did you become an idol?”
132
Rothschild
dekAI - Matsushita Diner - check Ota and pick “About Naixatloz” 2 times
133
Rockefeller
dekAI - Matsushita Diner - check Ota and pick “About Naixatloz” 2 times
134
Three Laws of Robotics
gyoukAI - Driving - check Aiba and pick “About your self-destruct function...”
135
We Stand
dekAI - Warehouse District - check Moma and pick “Summarize the scene”
136
TIPS: Investigation
Obtained by starting the game
137
TIPS: Somnium 1
Obtained by starting SINKIN’ IN THE BRaiN
138
TIPS: Somnium 2: Mental Locks
Obtained by Smell the Winter Iris in SINKIN’ IN THE BRaiN
139
TIPS: Somnium 3: Time Limit and TIMIES
Obtained by starting PSYNCIN’ IN THE PaiN
140
TIPS: Somnium 4: Negative TIMIE
Obtained by clearing PSYNCIN’ IN THE VaiN or PSYNCIN’ IN THE VILLaiN
141
TIPS: Menu
Obtained by starting the game
142
TIPS: Branching Paths
Obtained by clearing any end
Guide History
Changelog

06/07/2020
- Basic guide created with raw text for each section
- Published guide
- Section 1-20 formatted
- Section 21-40 formatted
- Added screenshots

07/07/2020
-Section 41-60 formatted

08/07/2020
-section 61-80 completed

28/08/2020
-section 81-100 formatted
-updated screenshots
-updated description

29/12/2020
-section 101-120 formatted
-correction made to no.96 "sigAI" not SaikAI, credit to rabenfeder

05/01/2021
-Section 121-142 End formatted
-Guide 100% completed! Thank the lord!

To Do

Formatting
  • Section 1-20
  • Section 21-40
  • Section 41-60
  • Section 61-80
  • Section 81-100
  • Section 101-120
  • Section 121-142 End

Guide Formatting Completion

100% completed

Special thanks to mimzy630 who's information online helped me complete this guide
16 Comments
< >
Salty 26 Jun @ 8:10pm 
Thank you 🫶
shadow_llama 11 Jan, 2024 @ 7:53pm 
THANKS
kenta2222 21 Oct, 2023 @ 1:34am 
It's a tremendously useful list! Thank you so much!:chocola:
crisvv96 16 Feb, 2023 @ 6:41am 
So so useful, thank you so much!
euby 17 Aug, 2021 @ 10:41pm 
ayo thanks, I missed a few after completing and will probably be scratching my head without this guide
kirbo 3 Jul, 2021 @ 11:23am 
i ended up only missing "Sun Poke" mainly because i dont recall if you could examine that sign before... I kind of already knew where to inspect on every room by the end lol
thanks!
Ally  [author] 20 Jun, 2021 @ 4:20pm 
You're welcome! I'm exactly the same and its what prompted me to do this! :)
SharkoRoblarto 20 Jun, 2021 @ 5:14am 
thank you so much I have ocd and I was going to lose my mind if I couldn't complete the appendix
Ally  [author] 4 May, 2021 @ 2:35am 
Thanks for find the information! I looked around a lot and it was hard to find your information so I thought this would be good to help people out :), like an idiot I did it after I'd already finished though so it took ages to format as I'd already finished the game and my motivation had vanished by that point.
Mori 3 May, 2021 @ 1:10pm 
Wow, I'm so honored you uploaded this to Steam! I'm not so great at Steam formatting so I'm glad for you- and the credit is appreciated! Finding all those appendices took forever so I'm glad it's not all just stuck on a google doc anymore :D!