Boxing Fever (GBA)

Invincibility and more power
When choosing your boxer, hit these buttons, then hit select when you're finished entering the button sequence:

Right, Left(2), Right, Left - Invincible
Left(4), Right - More power



Passwords:

Amateur Series completed - 90HG6738
Top Contender Series completed - H7649DH5
Pro Am Series completed - 2GG48HD9
Professional Series completed - 8G3D97B7
Survival Mode completed - G51FF888
World Title acquired - B3G58318