F-Zero Climax - Platform: Gameboy Advance

Climax Mode:
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When the menu screen appears just enter the code while holding the 
two shoulder buttons. You must do it within several seconds of the 
menu screen showing up and you will hear a noise. If you mess up you 
need to either restart the game or go into a race and go back to the 
menu.

Code - Effect 
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Up, Down, Up, Down, Up, Down, Up, Down, Up, Down, A - Climax Mode 


Character profiles:
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Select survival mode, then successfully complete the challenge for a 
character to unlock the corresponding profile.