SNOW BROS. JR. CODES
SYSTEM: GAME BOY/GAME BOY POCKET
COPYRIGHT 2000 THRASHNET GROUND ZERO SIX PRODUCTIONS ALL RIGHTS RESERVED
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STAGE SELECT
On the title screen press and hold the following:
UP, SELECT, B
Then (while holding down all buttons) press:
START
(NOTE: The game will call it the 'Map Select' but its the same as a stage
select.)

INVINCIBILITY
On the title screen press and hold the following:
LEFT, DOWN, A, B
Then (while holding down all buttons) press:
START
You'll be invincible for the entire game.

    Source: geocities.com/tgz6/codes/Game_Boy_Pocket_BW

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