Speedrunning Tool

HOSPITAL RNG TOOL

SILENT HILL 4: THE ROOM

Instant door identification through real-time memory analysis

Download Tool

Windows only • Requires Silent Hill 4 (GOG)

01

THE PROBLEM

In Silent Hill 4's Hospital World, players must locate two critical items hidden behind randomized doors: the Hospital Key and Eileen's Room. The second-floor corridor stretches out with 11 doors on each side — 22 total — and the game randomly assigns which two doors contain your objectives each playthrough.

For speedrunners, this section is notorious. There's no way to predict which doors hold the key items. You enter the corridor, pick a direction, and start checking doors one by one. Each wrong door costs precious seconds — the animation to open, peek inside, close, and move to the next one adds up fast. In a bad run, you might check 15+ doors before finding both items. In a lucky run, they're right next to each other at the end of the hall.

"Hospital RNG can make or break a speedrun. Bad luck means checking door after door while your time bleeds away. Good luck means walking straight to both items."

For over 20 years, the speedrunning community accepted this as an unavoidable roll of the dice — a section where skill couldn't help you, only luck. Until now.

02

THE SOLUTION

The Hospital RNG Tool reads the game's memory in real-time to instantly identify which doors contain the Hospital Key and Eileen's Room. No more guessing. No more wasted time. The moment you enter the hospital world, you know exactly where to go.

SH4_Hospital_RNG_Tool.exe

SILENT HILL 4

THE ROOM

Hospital Key

L7

Eileen's Room

R3

HOSPITAL CORRIDOR — 2F

R11
R10
R9
R8
R7
R6
R5
R4
R3
R2
R1
L11
L10
L9
L8
L7
L6
L5
L4
L3
L2
L1
03

HOW IT WORKS

The tool uses memory reading to access the game's door state array in real-time. When Silent Hill 4 loads the hospital area, it populates a 22-byte array where each byte represents a door's contents.

Memory Address

The door contents are stored at a fixed memory location that persists across game sessions.

0x13D7B40 (22 bytes)

Value Detection

Each door byte contains a value indicating what's inside. The tool scans for specific values.

Hospital Key = 14
Eileen's Room = 10

Index Mapping

The array indices are reversed on both sides of the corridor — a quirk discovered through reverse engineering.

Index 0 = L11 → Index 10 = L1
Index 11 = R11 → Index 21 = R1

Real-Time Polling

The tool continuously monitors the memory address and updates the display as soon as values are detected.

Update interval: 500ms
04

FEATURES

  • Instant identification of Hospital Key and Eileen's Room locations
  • Visual hallway map with highlighted doors
  • Automatic game detection and connection
  • Standalone executable — no Python required
  • Custom GUI with user-configurable color themes and window settings
  • Minimal resource usage while running
  • Dark UI designed to minimize stream distraction
  • Works with GOG release of Silent Hill 4
05

USAGE

1. Launch Silent Hill 4: The Room on your PC.

2. Run the Hospital RNG Tool executable.

3. The tool will automatically detect and connect to the game process.

4. When you enter the Hospital World, the tool displays which doors contain the Hospital Key and Eileen's Room.

5. Walk directly to the highlighted doors. No more guessing.