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Mike Tyson Heavyweight Boxing
Big Heads
On the title screen press X, B, UP, DOWN when the words, "Press Start" appears.
Flat Mode
On the title screen press DOWN, UP, B, X when the words, "Press Start" appears.
Platinum Mode
On the title screen press X, B, L, R when you see the words, "Press Start".
Small Heads
On the title screen, press X, B, DOWN, UP when the words, "Press Start" appears.
