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Play Boulder Dash (Japan edition · Japanese) Online
Boulder Dash
Play Japanese Boulder Dash online on Famicom. Collect diamond quotas, control falling rocks and escape timed caves with map and password progression.
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 Boulder Dash
Quick start
Before moving into dirt, scan the tile above it and leave a horizontal escape. Take the displayed diamond requirement, then head for the exit rather than clearing everything. Hold A or B with a direction to manipulate one adjacent tile without entering it, useful for safe diamond pickup and boulder pushes. If no route remains, hold A+B for over one second to return to the world entrance at the cost of one life.
Controls
D-pad moves Rockford. Hold A or B and press a direction to dig, collect an adjacent diamond or push an adjacent boulder without moving. Hold A+B for more than one second to abandon the current town and lose a life. START starts and pauses. SELECT chooses one or two players. D-pad enters password digits and A confirms the code or selected town.
Boulder Dash — About this game
The Japanese Boulder Dash cartridge is Data East's Famicom version of the classic cave puzzle. Rockford tunnels through dirt and gathers enough diamonds to unlock the exit, while gravity immediately drops unsupported boulders and gems. That falling weight can remove enemies, create routes or crush the player. Four towns make a world and may be attempted from the map; all must be cleared to continue. Six-digit passwords preserve world progress, and the cartridge includes character-color choice and alternating two-player play.
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.