id: "how-to-use-memory-machine" slug: "how-to-use-memory-machine" order: 2 title: "How to Use the Memory Machine in The Incident at Galley House" description: "Detailed guide to operating the memory machine in The Incident at Galley House. Code format explained, input tips, power restoration, and troubleshooting common issues." keywords: ["The Incident at Galley House memory machine, how to use machine, code input guide, power restoration"] category: "guides" date: "2026-07-15" lastModified: "2026-07-16" image: "/images/hero.webp" video: ""
The Memory Machine — Your Gateway to the Past
The memory machine is the heart of The Incident at Galley House. It is the primary tool through which you investigate the deadly events at Galley House in 1936, and understanding how to use it effectively is essential for making progress in the game. This guide provides a comprehensive breakdown of how the machine works, how to input codes, what happens when it loses power, and how to troubleshoot common issues.
As Reya, a junior engineer at D&M, your job is to operate this machine. The premise is both simple and brilliant: the machine can access echoes of the past — memory scenes recorded in the fabric of reality itself. By inputting the correct combination of temporal, spatial, and personal coordinates, you can unlock and experience these scenes as if you were there.
Code Format Explained
Every code you enter into the memory machine follows a three-part format. Understanding each component is crucial:
Timestamp Component
The timestamp is a two-digit number that represents the chronological position of the scene within the timeline. Lower numbers occur earlier in the sequence of events. For example, 01 is the earliest scene, 02 is the next, and so on. In Part 1 (Past, 1936), timestamps run from 01 to 26 for the main scenes. Part 2 (Present) has its own sequence.
The timestamp does not correspond to a specific time of day — it is a sequential ordering of events. Scene 01 might take place in the evening, while scene 02 might flash back to earlier in the day. The number simply indicates the narrative order in which the game presents the scenes.
Location Component
The location is a two-letter code that identifies the room where the scene takes place. There are 16 locations in Galley House, each with a unique code. The location guide provides the complete list, but here are the key ones you will encounter early:
- EN — Entrance
- LI — Living Room
- QU — Quail Lane
- ST — Study
- KI — Kitchen
- DI — Dining Room
As you progress, you will unlock upper-floor rooms like Victoria's Room (VI), Helen's Room (HE), and Oswald's Room (OS). The two-letter codes are consistent throughout the game and never change.
Character Component
The character component consists of one or more numbered character IDs. Each past character is assigned a number: Person 1 (John Hobbes), Person 2 (Annie), Person 3 (Oswald), and so on up to Person 11 (Damian Pike). There are also hidden characters with special numbers.
When a scene involves multiple characters, their numbers are separated by hyphens. For example, 1-11 means characters 1 and 11 are both present. Some scenes only involve a single character.
Entering Codes into the Machine
To enter a code, follow these steps:
- Access the machine interface in your D&M workspace
- Input the two-digit timestamp in the first field
- Select the two-letter location code in the second field
- Enter the character number(s) in the third field, using hyphens to separate multiple characters
- Activate the machine to play the memory scene
If the code is valid, the scene will play immediately. If the code does not correspond to any scene, the machine will indicate that no memory echo was found at those coordinates. This does not mean the code format is wrong — it simply means there is no scene at that specific combination.
Power Restoration Mechanic
The memory machine requires power to operate. At three critical points during your investigation, the machine will lose power and you will need to restore it before continuing. Each power restoration event is tied to story progression — you cannot avoid it by playing differently.
First Power Loss
The first power loss occurs relatively early in your investigation. The restoration procedure is straightforward: examine the area around the machine for clues about how to restart the power supply. The solution involves finding a specific sequence of actions related to the machine's physical components.
Second Power Loss
The second power loss is more complex. You need to locate additional resources within the D&M facility to restore power. Pay attention to earlier scenes that reference the machine's power system — they contain subtle hints about the correct procedure.
Third Power Loss
The third and final power loss requires the most effort to resolve. By this point, you should have a good understanding of the machine and its systems. The restoration sequence ties into the overarching narrative of the game.
Each time you successfully restore power, you earn progress toward related achievements. The Machine Supervisor achievement unlocks after your first power restoration, and the Technical Engineer achievement after the second.
Troubleshooting Common Issues
If you are having trouble with the memory machine, check these common issues:
Code Not Working
Double-check the code format. Make sure the timestamp is two digits (use leading zeros for numbers below 10), the location is exactly two letters, and character numbers are separated by hyphens. Also verify that you have discovered and labeled the location — you cannot use a location code until you have identified it.
Machine Will Not Activate
If the machine does not respond at all, you may have lost power. Check for visual and audio cues that indicate a power failure. You need to complete the power restoration sequence before the machine will work again.
Missing Scenes
Not every combination of timestamp, location, and characters produces a scene. There are specific codes that correspond to actual memory echoes, and many combinations that do not. If a code does not work, try different combinations. The complete scene codes list has every valid code in the game.
Scenes Not Advancing the Story
Some scenes provide background information or character development rather than advancing the main plot. These scenes are still valuable for deductions and achievements. Watch them carefully for clues.
Advanced Tips for Machine Users
Once you are comfortable with the basics, these advanced tips will help you use the machine more efficiently:
Use the keyword search tool alongside the machine. After viewing a scene, search for key terms from the dialogue. This often reveals related scene codes you have not yet tried.
Do not be afraid to replay scenes. You can revisit any previously unlocked scene at any time. This is useful for catching details you missed, especially voice acting nuances that are easy to overlook on first viewing.
Keep mental or physical notes about which character numbers correspond to which silhouettes. As you identify characters, the deduction process becomes easier because you know who you are looking at in each scene.
The machine interface has subtle visual cues that indicate which scenes you have already viewed and which locations you have discovered. Pay attention to these indicators to track your progress.
For a complete walkthrough of every scene in the game, visit the full walkthrough page. For help identifying characters, see the character identities guide. Both resources complement the information in this machine guide and will help you make the most of your investigation.