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Play Kaisen Game - Navyblue 90 (Japan edition · Japanese · Edition 151222) Online
Kaisen Game - Navyblue 90
Play Kaisen Game - Navyblue 90 online on Game Boy. Navy Blue 90 hides opposing fleets on an eight-by-eight sea, turning each shot into a clue about the next target.
Browser play

Game Boy (GB) — 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 Kaisen Game - Navyblue 90
Quick start
Choose 1P and START. Select the allowed ships and items, move each ship into the ocean grid and rotate with B before confirming A. On the target grid, choose a coordinate and A to attack; use B for the support window and ITEM when a special attack is needed.
Controls
D-pad: move ship or targeting cursor, choose an item; A confirms. B rotates ships during placement and opens the support window during targeting. SELECT chooses the mode, START confirms it. In password entry, up/down changes the digit and right advances the position.
Kaisen Game - Navyblue 90 — About this game
Navy Blue 90 hides opposing fleets on an eight-by-eight sea, turning each shot into a clue about the next target. Arrange your own ships, equip the items they can carry and read the pattern of hits, misses and near misses as the enemy returns fire. A special attack can cover several squares, but it is more useful when it follows a plan than when spent on a blind guess. Finish your choice before the attack timer runs out. The contest is won by sinking the whole fleet, so keep the outline of an unfinished ship in mind even while another area looks tempting.
Choose 1P and START. Select the allowed ships and items, move each ship into the ocean grid and rotate with B before confirming A. On the target grid, choose a coordinate and A to attack; use B for the support window and ITEM when a special attack is needed.
Kaisen Game - Navyblue 90 Game manuals
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 · gb
- 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.