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Play Tennis no Oji-Sama 2003: Cool Blue (Japan edition · Japanese) Online
Tennis no Oji-Sama 2003: Cool Blue
Play GBA ``The Prince of Tennis 2003 COOL BLUE'' online. Enjoy ranking battles and special move rallies with recorded players including Fudomine and St. Rudolph.
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 Tennis no Oji-Sama 2003: Cool Blue
Quick start
Select "Single player" → "School ranking match" from the title and decide which players will be included in COOL BLUE. The goal in the early stages is to win the first course and increase the number of players using it. Fill up the C gauge during rallies, and when the activation conditions are met, aim for a special move with a combination of L/R and A/B.
Controls
Cross button: Movement/Ball direction/Menu. A: Decision/straight ball. B: Cancelled/Rob. L+A: Topspin. L+B: Short volley. R+A: Slice. R+B: High lob. SELECT: Provocation. START: Pause. When the C gauge is full, use L + R + A/B for a special move.
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.