The following are known Action Replay Codes for Tom Clancy’s Splinter Cell: Chaos Theory on Nintendo GameCube (GCN).

Master Code – Must Be On
WYYF-Z7D6-K0Q9Z
7MKV-XCX5-4QQ89
DJYR-6FE7-KMXX9
QE4M-MCM8-UYHKU
BKQ7-Z490-FUUG9

Infinite Health
DY0H-FPNC-1QMTE
DEEP-M8VJ-6EYC0
416D-VEVM-VP9R4

Infinite Ammo
ADWC-HK5K-Z7R6X
7P6M-7MJ3-N766E
EGNU-XX16-WVNZR
0351-8X26-3FZQR