Complete Sonic's, Tails', Amy's and Knuckles' missions for hero side, and Jet's, Wave's and Storm's missions for the Bablyon Rogues.
after you beat a story (sonic or babylon) the tracks will have missions.
you have to get a gold card on every single mission
Clear all missions in mission mode
Sonic riders, Sonic Riders: Zero Gravity and Sonic Free Riders already exist.
You have to do all the missions with the highest possible rank on each mission and then it will tell you that sonic has a new gear called chaos emerald
Sonic Free Riders is the third instalment in the Sonic Riders series.
The only ranking the game has is when you finish a mission and you get a ranking for your performance.
The only way to do it is get an extreme ranking on every mission no other way.
sonic riders: free riders
Sonic Riders Extreme is an unconfirmed game at this stage.
No, but he is in Sonic Riders: Zero Gravity.
Sonic Riders happened in 2006.