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Play Ninja JaJaMaru-kun (Japan edition · Japanese) Online
Ninja JaJaMaru-kun
Play Ninja JaJaMaru-kun online. Break ceilings, defeat yokai and collect hidden items in the original throwing-star action game.
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 Ninja JaJaMaru-kun
Quick start
Use SELECT for one player, then START. Move with Left/Right, jump with A and throw stars with B. Break a ceiling to reach higher enemies. Collect souls after a kill, but check for incoming shots before chasing them.
Controls
Left/Right move; A jumps; B throws stars. START begins or toggles pause. SELECT chooses the title-menu mode. During Gama Paku, Down drops a tier and A jumps. Two players take alternating turns.
Ninja JaJaMaru-kun — About this game
Jajamaru sets out after the kidnapped Princess Sakura, but each stage is a compact battle rather than a race to a distant exit. Defeat its eight yokai, break overhead floors to reach higher tiers, and collect the souls left behind. Hidden items can improve your chances or conceal a bomb. The giant toad Gama Paku provides a powerful temporary advantage when its collection conditions are met. Stages repeat, making survival and score the continuing goals.
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.