Same with NiGHTS and Billy Hatcher. Complete all the missions
yes you can unlock Cosmo in sonic riders zero gravity you cant get cosmo in sonic zero gravity riders for Nintendo wii. the characters you can get are sonic, tails, knuckles, jet, wave, storm, silver, blaze, knights, shadow, Amy, eggman, rouge, cream, billy hatcher, amigo, SCR-GP, and SCR-HD.
Silver is not in Sonic Riders. However, he is unlockable in Sonic Riders: Zero Gravity by completing the Babylon story.
you can not but you can unlock super sonic
Complete all missions to unlock Ulala, Aiai and Nights. For Sonic Riders: Zero Gravity, complete all missions to unlock Nights, Amigo and I think Billy Hatcher, I have them unlocked I just haven't played the game in ages.
you need to beat the game to unlock them
Beat Babylon Story.
You beat heroes mode on story
Shadow - Beat Heroes story
No, but he is in Sonic Riders: Zero Gravity.
Sonic riders, Sonic Riders: Zero Gravity and Sonic Free Riders already exist.
Be in 1st place in ether Babylon Story or Sonic Story. I forgot which one it is.
i believe it is sonic riders,this is because on sonic zero gravity,it goes slow,in the original,you go fast.so the original. :) by mobian angel