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Play Pro Yakyuu Satsujin Jiken! (Japan edition · Japanese) Online
Pro Yakyuu Satsujin Jiken!
Famicom “Professional Baseball? Murder case! ” online. Travel around seven cities with Igawa and use interviews, tools, and disguises to find the truth. Introducing movement, command operations, LP recovery and saving methods.
Browser play

Nintendo Entertainment System (NES) / Famicom — EmulatorJS controls
Default Player 1 keyboard mapping. Change keys in Controller Settings.
| Console button | Keyboard |
|---|---|
| ↑ / ↓ / ← / → | ↑ / ↓ / ← / → |
| A / B | Z / X |
| START / SELECT | Enter / V |
Open Controller Settings to configure your keyboard or gamepad. Touch controls are available on mobile.
How to Play Pro Yakyuu Satsujin Jiken!
Quick start
Select START with SELECT and start anew with the START button. Move with the cross button and open the command with A. You can speak by touching a person, facing that direction, selecting "Speak" and pressing A. If you're curious about a place, then ``investigate'' it, and if you're stuck, ``think'' and ask for advice. When you run out of LPs, go to bed at home and take a rest. You can save the investigation by selecting "Talk" at the shrine.
Controls
Cross button: Movement, command/target selection. A: Open/execute commands, send conversations, determine survey location. B: Cancel/Close window. SELECT: START/CONTINUE on title, select text speed during play. START: Start, suspend/resume. In action, A responds to pitches, shots, etc. For 100m dashes, hit A repeatedly, for long throws, start the run-up with A, and then A again near the next white line. In a baseball fielding test, you will dive with A.
Pro Yakyuu Satsujin Jiken! — About this game
“Professional baseball? Murder case! The main character of ``Igawa Suguru'' became a baseball commentator after retiring. When a friend brings in a case containing a large sum of money, he is suspected of being an accomplice, and ends up pursuing the truth while avoiding the police. The investigation takes place in seven cities, including Tokyo, Osaka, and Hiroshima, where players walk the streets, talk to people, investigate suspicious places, and use the tools they collect to connect information. Since LP decreases when moving, it is also necessary to incorporate food and rest. In addition to disguises using tools and the use of different means of transportation, there are also baseball-related actions such as escaping from the police and joining a team. Even if you visit the same person again, the story may change, so you want to keep track of the phone numbers and testimonies you have and keep an eye on them.
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 · nes
- 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.