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The following are known Action Replay Codes for Tony Hawk’s Underground on Nintendo Game Boy Advance (GBA).
These codes were also known as GameShark Codes and in most cases will work on both devices.
These codes are for the U.S. version of the game.
Master Code – Must Be On
8d587104
e561c610
a9b61b83
9fd6f1e4
Infinite Health
a62d0cba
a2c16396
Max Overall Score
45ae0c67
2a852288
0fb35db8
0dcbf2c2
Max Trick Score
fa08fa8e
b635f7fa
b849669e
8c310681
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