The following are known Action Replay Codes for Snood 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
135422ae
4f482ea3
00095189
cd895af3

Infinite Lives
771105a8
8c747709

Max Score
6daf4a41
34c35dd1
4dc6e619
a57d5f24
a8bbd351
490ebd2c
d116f999
03903f5c

Never Drown Snood
e79401b7
c3b88130

Start On Level 50
13b76c84
2b85a8df