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Play Emeraldia (Japan) (Japan edition · Japanese) Online

Emeraldia (Japan)

Play Emeraldia (Japan) online. Crack matching blocks, shatter them with another matching impact and rescue creatures in Adventure mode.

Browser play

How to play

Arcade — EmulatorJS controls

Default Player 1 keyboard mapping. Change keys in Controller Settings.

Console button	Keyboard
↑ / ↓ / ← / →	↑ / ↓ / ← / →
RetroPad A / B / X / Y	Z / X / A / S
L / R	Q / E
Insert coin	V
START	Enter

Open Controller Settings to configure your keyboard or gamepad. Touch controls are available on mobile.

How to Play Emeraldia (Japan)

Quick start

Rotate and place a matching block group.
Crack a vertical group of three.
Land another matching block to shatter it.
In Adventure, clear the blocks beneath a trapped creature.

Controls

Move the pieces Left, Right or Down. The rotation button turns them anticlockwise. In Adventure mode, Up plus the rotation button uses the reserved special item.

Emeraldia (Japan) — About this game

Emeraldia (Japan) first cracks a group of matching blocks and then requires another matching impact to shatter it. This makes preparing a clear different from completing one. Adventure mode uses those clears to lower trapped sea creatures to the bottom, while its earned items are reserved for the following ocean and can be used only once. Normal and Versus provide alternative contests around the same falling-block core.

Cheats

Infinite Credits

1 "开启", 0, 0x7F47, 0x09

Control blocks above online (boxes don't fall)

1 "开启", 0, 0x7F9D, 0x05

Select the current temporary top left block PL1

1 "红色", 0, 0x7FA9, 0x00
2 "绿色", 0, 0x7FA9, 0x30
3 "紫色1P/褐色2P", 0, 0x7FA9, 0x80
4 "浅蓝色", 0, 0x7FA9, 0x90
5 "蓝色", 0, 0x7FA9, 0xA0
6 "金色", 0, 0x7FA9, 0xB0

Select the current temporary top right block PL1

1 "红色", 0, 0x7FAB, 0x00
2 "绿色", 0, 0x7FAB, 0x30
3 "紫色1P/褐色2P", 0, 0x7FAB, 0x80
4 "浅蓝色", 0, 0x7FAB, 0x90
5 "蓝色", 0, 0x7FAB, 0xA0
6 "金色", 0, 0x7FAB, 0xB0

Select the current temporary lower left block PL1

1 "红色", 0, 0x7FAD, 0x00
2 "绿色", 0, 0x7FAD, 0x30
3 "紫色1P/褐色2P", 0, 0x7FAD, 0x80
4 "浅蓝色", 0, 0x7FAD, 0x90
5 "蓝色", 0, 0x7FAD, 0xA0
6 "金色", 0, 0x7FAD, 0xB0

Select the current temporary lower right direction block PL1

1 "红色", 0, 0x7FAF, 0x00
2 "绿色", 0, 0x7FAF, 0x30
3 "紫色1P/褐色2P", 0, 0x7FAF, 0x80
4 "浅蓝色", 0, 0x7FAF, 0x90
5 "蓝色", 0, 0x7FAF, 0xA0
6 "金色", 0, 0x7FAF, 0xB0

Select the temporary top left block PL1

1 "红色", 0, 0x7FB9, 0x00
2 "绿色", 0, 0x7FB9, 0x30
3 "紫色1P/褐色2P", 0, 0x7FB9, 0x80
4 "浅蓝色", 0, 0x7FB9, 0x90
5 "蓝色", 0, 0x7FB9, 0xA0
6 "金色", 0, 0x7FB9, 0xB0

Select the temporary next top right-direction block PL1

1 "红色", 0, 0x7FBB, 0x00
2 "绿色", 0, 0x7FBB, 0x30
3 "紫色1P/褐色2P", 0, 0x7FBB, 0x80
4 "浅蓝色", 0, 0x7FBB, 0x90
5 "蓝色", 0, 0x7FBB, 0xA0
6 "金色", 0, 0x7FBB, 0xB0

Select the temporary next lower left block PL1

1 "红色", 0, 0x7FBD, 0x00
2 "绿色", 0, 0x7FBD, 0x30
3 "紫色1P/褐色2P", 0, 0x7FBD, 0x80
4 "浅蓝色", 0, 0x7FBD, 0x90
5 "蓝色", 0, 0x7FBD, 0xA0
6 "金色", 0, 0x7FBD, 0xB0

Select the temporary next lower right-hand block PL1

1 "红色", 0, 0x7FBF, 0x00
2 "绿色", 0, 0x7FBF, 0x30
3 "紫色1P/褐色2P", 0, 0x7FBF, 0x80
4 "浅蓝色", 0, 0x7FBF, 0x90
5 "蓝色", 0, 0x7FBF, 0xA0
6 "金色", 0, 0x7FBF, 0xB0

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: October 20, 2026
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 · arcade
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.

Editorial policy and sources Trust center EmulatorJS player help