The following are known Action Replay Codes for Iridion 3D 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
0421fc8e
b364159f
03c43512
ec261a77

Infinite Health
7d5283cb
238ec32b

Infinite Lives
8196b820
d1709002

Massive Score
666fc43e
14189e1e

Press AR Button: Slow
dbba3a89
4cb74b94