one secret is when u get all 130 emblems you get metal sonic only for gamecube but if u have xbox360 u need the dx content also for gamecube u unlock mini games too
also do me a good favor please please suscribe to me on youtube plz i only have 2 subs plz suscribe watch my vids u may like them u may not but plz sub to me my account is ziroyhendrick plz suscribe and if u have a account ill sub to u