Ready 2 Rumble Boxing: Round 2 [GBA]
Box as Michael Jackson
At the main menu, highlight the "Arcade" option, then press Left(2), Right(2), Left, Right, L + R to unlock Michael Jackson.
Box as Shaquille O'Neal
At the main menu, highlight the "Survival" option, then press Left(4), Right(2), Left(2), Right, L + R to unlock Shaquille O'Neal.
Box as Rumble Man
At the main menu, highlight the "Championship" option, then press Left(2), Right, Left, Right(2), Left, Right, Left, L + R to unlock Rumble Man.
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