Sonic Advance 3 Codes -

 

Secret Stage mode:
After complete all seven special stages, return to the main menu and press , , , , , .

Extra Zone:
Collect all seven Chaos Emeralds, then complete The Final Zone with Sonic as the leader.

Play as Knuckles:
In a new game, complete all three Acts of Sunset Hill Zone with Sonic as the leader.

Play as Amy:
In a new game, complete all three Acts of Toy Kingdom Zone with Sonic as the leader.

Play as Cream:
In a new game, complete all three Acts of Cyber Track Zone with Sonic as the leader.

Sound test:
Successfully complete the game. You do not need all the Chaos Emeralds. The "Sound Test" option will appear just above "Delete Game Data" in the options menu.

Boss time attack:
Successfully completed the game. Do not have all Emeralds but have a Golden Ring in all stages (Act 1, 2, 3 and vs. Boss).