NINJA GAIDEN SHADOW CODES
SYSTEM: GAME BOY/GAME BOY POCKET
COPYRIGHT 2000 THRASHNET GROUND ZERO SIX PRODUCTIONS ALL RIGHTS RESERVED
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SOUND TEST
On the title screen press and hold the following:
RIGHT, B, A
Then press:
START

    Source: geocities.com/tgz6/codes/Game_Boy_Pocket_BW

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