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Play Laplace no Ma (Japan edition · Japanese) Online
Laplace no Ma
Play Laplace no Ma Online — Investigators explore a sinister mansion in a horror role-playing adventure set near Boston in the 1920s.
Browser play

PC Engine CD / TurboGrafx-CD — EmulatorJS controls
Default Player 1 keyboard mapping. Change keys in Controller Settings.
| Console button | Keyboard |
|---|---|
| ↑ / ↓ / ← / → | ↑ / ↓ / ← / → |
| I / II | Z / X |
| RUN / SELECT | Enter / V |
Open Controller Settings to configure your keyboard or gamepad. Touch controls are available on mobile.
How to Play Laplace no Ma
Quick start
Create the lead investigator, choose a profession and recruit a balanced party. Check equipment and supplies before entering the mansion, then explore the first rooms methodically.
Controls
Use the direction pad to move. I confirms or interacts; II cancels.
Laplace no Ma — About this game
Investigators explore a sinister mansion in a horror role-playing adventure set near Boston in the 1920s. The party's professions matter, giving the group different ways to deal with the building and the threats within it. Preparing that group is part of the challenge: a collection of strong attackers is less useful if nobody can handle another kind of problem. Exploration leads to encounters and discoveries that deepen the mystery, while limited supplies make repeated expeditions a serious decision. Read descriptions carefully and remember which rooms remain unexplored instead of wandering until the party is exhausted. Returning to safety to recover and reconsider the team's equipment can create more progress than pushing blindly through one additional dangerous passage.
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 · pce
- 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.