:: video games cheat and cheat codes ::                                            

Gamecube - Sonic Heroes cheats

Unlock New 2 Player Modes 
2P Action Race Unlocked from start 
2P Team Battle Collect 20 emblems  
2P Special Stage Collect 40 emblems 
2P Ring Race Collect 60 emblems 
2P Bobsled Race Collect 80 emblems 
2P Quick Race Collect 100 emblems 
2P Expert Race Collect 120 emblems 

Unlockables: CG Theatres 
Team Chaotix Cinema: Complete Team Chaotix in Story Mode
Team Dark Cinema: Complete Team Dark in Story Mode 
Team Rose Cinema: Complete Team Rose in Story Mode 
Team Sonic Cinema: Complete Team Sonic in Story Mode  

Unlockable: Super Hard Difficulty 
Beat the game with 141 Emblems and all A ratings.  

Metal Sheen 
Hold A and Y after selecting a 2-player level to have a "metallic" skin 
covering over your team. 

Unlockable: Last Story 
Find all 7 Chaos Emeralds and finish all stories