Screenshots1 / 2
Vs. Ninja Jajamaru Kun
忍者阿贾玛
Vs. Ninja Jajamaru Kun is a 1985 arcade action game developed by Jaleco, designed for two simultaneous players. Players control ninja characters navigating single-screen stages filled with enemies. The gameplay involves throwing shurikens and using ninja techniques to defeat opponents while avoiding hazards. Each stage presents a fixed layout with enemies that increase in speed and aggression as the game progresses. The two-player mode allows cooperative or competitive play depending on the situation. Controls are straightforward, handling movement and projectile attacks. The game builds on the Jajamaru Kun series, adapting its ninja protagonist for a versus-style arcade format with escalating difficulty across successive stages.
- Developer
- Jaleco
- Released
- 1985
- Platform
- Arcade
- Genre
- Action
- Players
- 2P
- Rating
- 4.7 / 5 (2.3K)
- Last updated
Vs. Ninja Jajamaru Kun Controls — Arcade Keyboard Keys
Default keyboard bindings for Vs. Ninja Jajamaru Kun on our in-browser Arcade emulator. Plug in a USB or Bluetooth gamepad to auto-detect mappings, or rebind any key from the emulator settings menu.
| Keyboard | Console button | Typical use |
|---|---|---|
| ↑ | Joystick Up | Move up |
| ↓ | Joystick Down | Move down |
| ← | Joystick Left | Move left |
| → | Joystick Right | Move right |
| X | Button 1 | Primary action (jump / confirm) |
| Z | Button 2 | Secondary action (attack / cancel) |
| S | Button 3 | Tertiary action |
| A | Button 4 | Quaternary action |
| Q | Button 5 | Fifth button |
| W | Button 6 | Sixth button |
| 5 | Insert Coin | Insert coin |
| 1 | 1P Start | Start / Pause |
Coin and Start are convention "Insert Coin: 5" and "1P Start: 1". Some arcade boards expect specific button mappings — check the in-game prompts on coin-up.
Rebind any key from the EmulatorJS in-game settings menu (gear icon → Controls). A connected gamepad auto-maps to the same buttons.
Vs. Ninja Jajamaru Kun Longplay & Gameplay Videos
Watch a full playthrough of Vs. Ninja Jajamaru Kun on Arcade before you dive in — recommended for getting a feel for the game's pacing, story beats, and difficulty curve.
Watch longplay on YouTube
"Vs. Ninja Jajamaru Kun" Arcade longplay 1985
External references
Frequently Asked Questions
When was Vs. Ninja Jajamaru Kun released?
Vs. Ninja Jajamaru Kun was released in 1985 for the Arcade.
Who developed Vs. Ninja Jajamaru Kun?
Vs. Ninja Jajamaru Kun was developed by Jaleco, available to play in your browser on RetroGameSpace.
How many players does Vs. Ninja Jajamaru Kun support?
Vs. Ninja Jajamaru Kun supports up to 2 players, ideal for couch co-op or competitive sessions on the Arcade.
What type of game is Vs. Ninja Jajamaru Kun?
Vs. Ninja Jajamaru Kun is a Action game for the Arcade, playable instantly in your browser — no downloads, no installs.
How can I play Vs. Ninja Jajamaru Kun for free?
Open this page and click "Play Now" — Vs. Ninja Jajamaru Kun runs free in your browser via WebAssembly emulation. No account, no payment, no installer.
Do I need to download anything to play Vs. Ninja Jajamaru Kun in the browser?
No. Vs. Ninja Jajamaru Kun streams from a public archive into a browser-side Arcade emulator. Nothing is installed on your computer.
Can I save my progress in Vs. Ninja Jajamaru Kun?
Yes. Save states are stored in your browser (IndexedDB) per game, and you can also use any in-game save the original Arcade cartridge supported.
Does Vs. Ninja Jajamaru Kun work on mobile devices?
Yes — the Arcade emulator runs on iOS Safari and Android Chrome. Touch controls overlay the game; landscape mode is recommended.
Is it legal to play Vs. Ninja Jajamaru Kun this way?
RetroGameSpace is a transient caching reverse-proxy and does not host first-party copies of Vs. Ninja Jajamaru Kun. Game files are fetched on demand from publicly-accessible archives. You are responsible for compliance with your local laws and the bring-your-own-ROM principle.
