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Play Battle x Battle: Kyodaigyo Densetsu (Japan edition) Online
Battle x Battle: Kyoudai Uo Densetsu
Play Battle x Battle: Kyodaigyo Densetsu online. This is a GBA competitive action fishing game where you compete for giant fish in seven worlds, competing by guiding bait and managing tension.
Browser play

Game Boy Advance (GBA) — EmulatorJS controls
Default Player 1 keyboard mapping. Change keys in Controller Settings.
| Console button | Keyboard |
|---|---|
| ↑ / ↓ / ← / → | ↑ / ↓ / ← / → |
| A / B | Z / X |
| L / R | Q / E |
| START / SELECT | Enter / V |
Open Controller Settings to configure your keyboard or gamepad. Touch controls are available on mobile.
How to Play Battle x Battle: Kyodaigyo Densetsu
Quick start
Press START on the title screen to start the game, and in the first stage, sink two carp to use as bait. Next, use the perch as bait and guide it to the deep water where water is rising in the upper right corner of the screen, and when the huge fish bites, hook it by pressing the bottom of the cross button. During the fight, watch the line tension display and use summing to weaken the huge fish by keeping it around orange without raising it to the dangerous range. The victory conditions change for each stage, so check the explanation at the start.
Controls
Use the cross button to select the menu and adjust the fishing position and tackle, press A to confirm, and press B to cancel. When fighting with fish, increase the tension by summing B, and loosen it by releasing. In the vortex scene, the tension increases even when you press the cross button, and decreases when you release it, so keep the display at about 70% to 80% to prevent thread breakage. For special rules where you pause with START and receive instructions on the screen, give priority to that input.
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 · gba
- 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.