The following are known Action Replay Codes for Midway’s Greatest Arcade Hits 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
901d8b6b
71c3ce08
7a645394
6e54527f

Defender: Infinite Lives
2825bb4a
b6da4ed5

Defender: Infinite Msles
3a729926
ba7953db

Defender: Max Score
1ac7f589
b6daff51

Robotron: Infinite Lives
55cbb568
c0eb97bc

Robotron: Max Score
5e94a3be
7344c8f7

Joust: Infinite Lives
439452e5
d6710987

Joust: Max Score
dc446856
83f9bbcf

Sinstar: Infinite Lives
6b0863d6
24b8f49d

Sinstar: Max Score
f0e7ab45
3a9231fd