Unlock Jimmy Flex and Disco stadium
Enter world mode, select "New Career" and choose any boxer,
then enter "CLUBFUD" as a name and press Triangle.
Unlock John L. Sullivan and Docks stadium
Enter world mode, select "New Career" and choose any boxer,
then enter "OLD MAN" as a name and press Triangle.
Boxer's heads grow when punched
Enter world mode, select "New Career" and choose any boxer,
then enter "OUCH" as a name and press Triangle.
Boxer's heads spin when punched
Enter world mode, select "New Career" and choose any boxer,
then enter "HURTS" as a name and press Triangle.
Boxer's necks stretch when punched
Enter world mode, select "New Career" and choose any boxer,
then enter "NECK" as a name and press Triangle.
Invisible boxer
Enter world mode, select "New Career" and choose any boxer,
then enter "GONE" as a name and press Triangle.
Small heads
Enter world mode, select "New Career" and choose any boxer,
then enter "BINGY" as a name and press Triangle.
Big heads
Enter world mode, select "New Career" and choose any boxer,
then enter "BONGY" as a name and press Triangle.
Big hands and feet
Enter world mode, select "New Career" and choose any boxer,
then enter "STUPID" as a name and press Triangle.
Disable all cheats
Enter world mode, select "New Career" and choose any boxer,
then enter "NORMAL" as a name and press Triangle.
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