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Play Erunaaku no Zaihou (Japan edition · Japanese) Online
Elnark no Zaihou
Before playing FC "Treasure of Elnark" online, check attacks, investigate sacred stones, change weapons, holy words and attributes of the heart.
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 Erunaaku no Zaihou
Quick start
Use the D-pad to move, and press A to throw your weapon in the direction you're facing. If there is a suspicious position such as under a rock or tree, press B to use the sacred stone, and if there is no reaction, move your position slightly and re-investigate. Press A after selecting to switch weapons. Don't just aim to annihilate your enemies; instead, check your sacred words and heart gauge.
Controls
Cross key: Move up/down/left/right. A: Attack with current weapon. B: Use the sacred stone to investigate the surroundings. Press Select then A: Switch weapons. Start: Pause. Cannot move diagonally.
Erunaaku no Zaihou — About this game
"Treasure of Elnark" is an action game for the Famicom in which the player investigates various ruins to rescue his best friend Joe who disappeared to South America. Simply defeating enemies will not open the exit; you will need to use sacred stones near rocks, trees, and pillars to find hidden words and stones. The mind moves between light and dark depending on the objects and spirits you pick up, and that state affects your physical strength and progression conditions, so it's a work that considers combat and exploration as having the same weight.
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.