Duke Nukem - Gameboy Color
Invincibility
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Press Up, Down(2), Left, Right, Left, Up(2)
at the title screen.
Level select
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Press Left, Right, Up(2), Down, Up, Right,
Left at the title screen.
Rapid-fire gun
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Begin game play on level 4 to get to the diagonal
platform. Repeatedly press A to keep going on the
platform and find a rapid-fire gun.
Avoid damage from falls
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Pause game play just before hitting the ground.
When game play is resumed, you will land without
damage.