More browsing paths
Play Mansion of Hidden Souls (Demo · Japan edition) Online
Yumemi Yakata no Monogatari (Japan) (Demo)
Play Mansion of Hidden Souls online. Explore a haunted mansion to find Jonathan's missing sister. Read the starting guide and original controls.
Browser play

Sega CD / Mega-CD — EmulatorJS controls
Default Player 1 keyboard mapping. Change keys in Controller Settings.
| Console button | Keyboard |
|---|---|
| ↑ / ↓ / ← / → | ↑ / ↓ / ← / → |
| A / B / C | S / X / Z |
| X / Y / Z | Q / A / E |
| START / MODE | Enter / V |
Open Controller Settings to configure your keyboard or gamepad. Touch controls are available on mobile.
How to Play Mansion of Hidden Souls
Quick start
Start a new visit and explore the entrance rooms. Listen to each encounter, inspect notable objects and remember passages that you could not yet use.
Controls
←/→/↓: turn view; ↑: move forward; ↑×2: approach then press again to inspect.
Mansion of Hidden Souls — About this game
Jonathan enters a mysterious mansion after his sister disappears inside it. First-person exploration is presented through pre-rendered video, with rooms and passages revealing clues and unsettling conversations. Talking butterflies are part of the house's mystery, so listening can be as valuable as finding an object. Progress depends on exploring the building and understanding how discoveries connect, not on defeating enemies in direct combat. The Sega CD game is also known as Yumemi Mystery Mansion and must be distinguished from the later Saturn title with a similar name.
Mansion of Hidden Souls Game manuals
Cheats
No cheats have been added for this edition.
Player verification and sources
Browser play was reviewed before this edition was published in the catalogue. The date below is the catalogue publication date, not the game’s original release date.
- Browser test and catalogue publication date
- Browsers and devices
- PC: Chrome, Edge and Firefox. Mobile: Chrome on Android and Safari on iPhone and iPad.
- Player engine and core
- EmulatorJS 4.3.0-pre · segaCD
- Tested by
- rwEmulator
Sources and editorial basis
rwEmulator reviews edition metadata, release information, game manuals and first-hand browser-play notes. Available manuals are linked below; the editorial policy explains how facts are checked and corrections are handled.