This guide covers the original AI: The Somnium Files. Investigate each location, speak with witnesses and complete timed Somnium puzzles until reaching the branch choices below. Use the in-game flowchart to return to earlier dreams without restarting. The recommended ending order is Ota, Mizuki, Iris, Annihilation, then Resolution. TIMIE items can reduce the time cost of Somnium actions.
Ota Ending
Mizuki’s Somnium: Open the Control Room.
Lift the Left Bird Cage.
Iris’s Somnium: Hit the TV.
Ota’s Somnium: Lie Down on the icy floor.
Breathe On Plate [A] beside the green shelf.
Use the Forklift: Sortie.
Motivate Ota.
Continue to Ota END.
Mizuki Ending
Return to Mizuki’s Somnium.
Open the Control Room; Lift the Left Bird Cage.
Iris’s Somnium: Hit the TV.
Ota’s Somnium: Lie Down on the icy floor.
Roll the Oil Drum.
At the Power Board, select Throw Something.
Encourage Ota.
On Day 5 at Sejima Residence, select Protect Mizuki.
Continue to Mizuki END.
Iris Ending
Return to Mizuki’s Somnium.
Open the Control Room; Lift the Right Bird Cage.
During Iris’s branching Somnium, Craft Monument at Crafting Table B.
Place Monument on the Pedestal.
Dig the Soft Ground.
Use Love Bomb on Debris.
Continue to Iris END.
Annihilation Ending
From Mizuki’s Somnium, open the Control Room and lift the Left Bird Cage.
During Iris’s Somnium, Spin the Dial on the TV instead of hitting it.
Advance along the green route.
Complete Ota, Mizuki and Iris ENDs and reach the second Resolution story lock to unlock this route.
On Day 5 at the Interrogation Room, when asked Obey Saito…, select I’ll do it.
Continue to Annihilation END.
Resolution Ending – True Ending
Complete Ota, Mizuki and Iris ENDs to unlock the first Resolution story lock.
Return to Mizuki’s Somnium; Lift the Right Bird Cage.
During Iris’s first Somnium, Talk to ???.
At Crafting Table B, Craft n/a.
Dig at the Shrine Wall.
Advance the pink branch until the second story lock.
Complete Annihilation END and return to the unlocked branch.
On Day 6 at the Abandoned Factory in Kabasaki District, at Should I pull the trigger?, choose Don’t pull the trigger.
Continue to Resolution END.
Date’s Atami Date Ending
From Mizuki’s route, open Day 5 –seisAI–.
Go to Talent Agency Lemniscate.
Talk to the receptionist.
Choose I want to touch your two… big…
Choose Let’s go to Atami together! repeatedly until she agrees.
Continue to the Atami joke ending.
