Sonic Advance 2 Cheats

Unlocking Truth Area 53:
This one differs by cartridge. You must get all seven Chaos Emeralds for Sonic and/or all 5 characters in the game.

Unlock Cream:
Finish the Leaf Forest level using Sonic.

Unlock Tails:
Finish the Music Plant level using Sonic.

Unlock Knuckles:
Finish the Sky Canyon level using Sonic.

Unlock Amy:
Finish the game with every one of the seven Chaos Emeralds using Cream, Knuckles, Sonic, and Tails.

Tiny Chao Garden:
Finish the game with every one of the seven Chaos Emeralds using any character.

Sound test:
Finish the game with every one of the seven Chaos Emeralds using any two characters.

Boss option in time attack mode:
Finish the game with every one of the seven Chaos Emeralds using any three characters.

Bonus level:
Finish the game with every one of the seven Chaos Emeralds using Amy, Cream, Knuckles, Sonic, and Tails to unlock a new level at the end of Sonic's map screen.

Special Stage:
By getting all seven of the special rings in any particular act you will get the special stage for that act. These stages are created to give you extra rings and all you have to do is avoid the green robot which will take away 10 rings every time you run into him. In certain stages it will multiply the number of rings you get by a certain number, designated with an X#(how much to multiply the next set of rings, X2=double the rings)