Here are some cheats and tips for the game Sonic Shuffle.
To unlock – you have to:
Big The Cat – Buy all pictures of Tails in Sonic’s room
Chao – Buy all pictures of Knuckles in Sonic’s room
E-102 Gamma – Buy the last picture of Amy in Sonic’s room
Super Sonic – Buy all pictures of Sonic in Sonic’s room
Bonus Characters – Beat story mode