Duke Nukem
Books: GAME BOY Secret Codes - Secret Codes 2003 - Game Boy Games Secrets

Level select
Invincibility


Level select
Sent in by Norfleet

To access level select, press Left, Right, Up, Up, Down, Up, Right, left at 
the title screen.


Invincibility
Sent in by Norfleet

Press Up, Down, Down, Left, Right, Left, Up, Up at the title screen.

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