Chrome ball - Finish all dribbling challenges
Blue/Silver ball - Finish the training mode
Cheep-Cheep ball - Finish the Hard Mushroom Cup with a gold
Dice ball - Finish the Hard Flower Cup with a gold
Star ball - Finish the Star Cup with a gold
Goomba ball - Finish the Hard Star Cup with a gold
Watermelon ball - Finish the Flower Cup with a gold
Yoshi egg ball Finish the Mushroom Cup with a gold
Gold ball - Get over 5,000 points in your profile