What you see
The server room is on the second floor of the R&D Headquarters. First comes a small tutorial room, then the main room with 26 labelled server units in five groups: Ψ Σ Δ Θ λ. Power starts at an unlabelled unit next to the ENERGY REBOOT sign. Three displays show which units each stage needs, and the power must finish on Ψ07, which starts the check.
In the checkpoint menu: Chapter 4 · Checkpoint 3 · Routing Power
Players also write the labels with look-alike Latin or Cyrillic letters. They all mean the same units, and the route checker below accepts all of them:
Ψ = W / ФΣ = E / ЕΔ = A / ДΘ = Oλ = Л
For example, Ψ07 is also written W07, Ф07.
How it works
- Press an unpowered unit that is linked to the unit holding the power. It charges, then comes online and holds the power. The unit you came from goes on standby: it keeps its power.
- Only an online unit passes power on. Wait until the new unit has finished charging before you press the next one.
- Pressing a unit with no link to the online unit, or one that already has power, is an error. It flashes for 3 seconds and nothing else changes.
- Power never goes back. A unit that has had power cannot take it again, so the route is one line with no branches and no repeats.
- When Ψ07 gets power, the game checks the current stage 2 seconds later: every unit on that stage's display must have power. The order does not matter, and extra powered units do no harm.
- Three coloured doors close off parts of the room. A door opens 2 seconds after its opener unit has power and closes again when you reset.
- To start over, pull the reset chains by the ENERGY REBOOT sign (probably both at the same time). The room resets and the power returns to the start unit.
- A passed stage does not reset the room. Pull the reset chains, walk the route for the next stage and power Ψ07 again. So Ψ07 is pressed once per stage, three times in all. The game saves a checkpoint after each stage.
What each stage needs
| Stage | The display shows |
|---|---|
| 1 | |
| 2 | |
| 3 |
The coloured doors
| Door | Opens when this unit has power | Units behind it |
|---|---|---|
| Red | Σ03 | Δ01 Δ03 Δ04 |
| Green | Σ02 | Θ01 Θ02 Θ03 Θ04 Its room is behind the Red door, so Σ03 is needed too. |
| Blue | Δ03 | λ01 λ02 λ03 |
With every door closed you can reach: Start Ψ01 Ψ02 Ψ03 Ψ04 Ψ05 Ψ06 Ψ07 Ψ08 Σ01 Σ02 Σ03 Σ04 Σ05 Σ06 Δ02 Δ05
Σ05, Σ06 have no links to any other unit. They are decoys.
Which units sit behind each door was read from the room's floor plan in the game files. It matches the community guides.
Call out the next label, press it, and wait for it to come online before the next one. A wrong press only flashes an error: the chain you built stays.
Solution
Show hint
The doors set the order. λ03 is behind the blue door, which opens from Δ03. Δ03 is behind the red door, which opens from Σ03. Θ03 is behind the green door: it needs Σ02, and you reach it through the red door's room.
Show the answerSpoiler
Before stages 2 and 3, pull the reset chains so the power is back on the start unit. Then press these units in order. Tags mark the stage's targets and the door openers.
Stage 1 needs Ψ02 · 5 presses
- Start
- 1Ψ01
- 2Ψ04
- 3Ψ02target
- 4Ψ03
- 5Ψ07
Stage 2 needs Ψ02, λ03 · 14 presses
- Start
- 1Ψ01
- 2Ψ04
- 3Ψ02target
- 4Ψ03
- 5Ψ06
- 6Σ04
- 7Σ03opens Red
- 8Ψ08
- 9Δ01
- 10Δ03opens Blue
- 11λ02
- 12λ03target
- 13λ01
- 14Ψ07
Stage 3 needs Ψ02, λ03, Θ03 · 17 presses
- Start
- 1Ψ01
- 2Ψ04
- 3Ψ02target
- 4Ψ03
- 5Ψ06
- 6Σ04
- 7Σ03opens Red
- 8Σ01
- 9Σ02opens Green
- 10Ψ08
- 11Θ03target
- 12Δ02
- 13Δ03opens Blue
- 14λ02
- 15λ03target
- 16λ01
- 17Ψ07
This is the only shortest route for stage 3. It is the route most guides print.
The stage 3 route also powers the stage 1 and 2 targets, so you can walk it for every stage if you want to learn only one route. Other routes work too: the game files allow 92, 26 and 11 walkable routes of up to 20 units for stages 1, 2 and 3.
Tutorial room
The first room is one chain of 9 units. Its other 6 units (01, 02, 05, 06, 09, 14) have no links. Power the chain from one end to the other:
- 08
- 13
- 04
- 11
- 03
- 07
- 15
- 12
- 10
The game files do not name the start unit. It is most likely 08, the only other end of the chain. When 10 is online, both doors open 4 seconds later.
Check your own route
Type the units in the order you press them, after the start unit. Spaces, commas or arrows between them all work, and so do look-alike letters and missing zeros (W7 = Ψ07).
Common mistakes
- Following one printed route “exactly”. Only the links and the doors limit the order, and Ψ07 must come last. Many routes work.
- Using a shorter route drawn on paper. Without the doors, stages 2 and 3 look shorter, but those routes pass λ and Θ units while their doors are still shut.
- Pressing the next unit while the last one is still charging. A unit only takes power from an online unit, so the press is an error.
- Trying to go back to an earlier unit. A unit that has had power cannot take it again: pull the reset chains instead.
- Expecting the room to reset after a passed stage. Nothing resets: pull the chains yourself before the next stage, then end on Ψ07 again.
- Looking for a unit labelled GEN. Guides call the start unit GEN, but it has no label in the game. It is the unit by the ENERGY REBOOT sign.
- Pressing Σ05, Σ06. They are not linked to anything.
Achievement
Recon & Disclose
Arrived on the second floor of R&D Headquarters
How it unlocks (spoiler)
On the second Headquarters visit, walk into the trigger area in the server room intro.
Turn It Off And On Again
Restored power to R&D Headquarters
How it unlocks (spoiler)
Complete stage 3 of the server room power puzzle.
Read from the game files of version 1.0 (no guesswork). Something wrong in your game? Tell us and we will check it. Report a problem