Yu-Gi-Oh! Dark Duel Stories

Yu-Gi-Oh! Dark Duel Stories
Also known as: Yu-Gi-Oh! Duel Monsters III: Tri-Holygod Advent (JP), Yu-Gi-Oh!: Das Dunkle Duell (DE), Yu-Gi-Oh!: Duel des Tenebres (FR) Developer: Konami Publisher: Konami Platform: Game Boy Color Released in JP: July 13, 2000 Released in US: March 18, 2002 Released in EU: November 22, 2002 This game has unused text. This game has debugging material. This game has a hidden sound test. This game has a prototype article

Yu-Gi-Oh!: Dark Duel Stories is the first Yu-Gi-Oh! portable game to released outside of Japan.

Debug Menus

Using the Game Genie codes 084-3BB-F72 094-25B-F76 with a Japanese or US copy, the player can access two hidden debug menus. To access these two, the player must move the cursor below "Password".

Sound Test

Choose listen to either the songs (きょく) or sound effects (おと). Music goes up to 33, while sound goes up to 20. The only controls are A to play a song, and B to exit back to the menu. The text is unreadable in the US version, but the menu remains functional.

Character Animation Viewer

View all of the opponents' cutscene animations, which can be viewed by pressing A. The index only goes up to 23. Anything higher and the game sends the player back to the menu. However, no matter who is selected, Weevil's intro dialogue is loaded.

(Source: Mezmorize)

Unused text

At offset 0xA9C2 is a string that is never displayed in-game:

Very good! You've
found the secret.
The secret of the
legendary card...
It's hidden here.
Your password...
It will reveal it
to your eyes!

At offset 0x15455 is a string for an effect that is never used in-game, as in the final game Megamorph only increases the level of a monster by 1:

Used Megamorph
Level increases
by 2!