Emoji balls: Score 100 points in a single game.
Hard Candy Balls: score 200 points in one single game.
Sports Balls: score 500 points in one single game.
Car Skins: score 1,000 points in one single game.
Star Balls: Play through 20 complete games

Poker Suit Balls: Play through 30 complete games
Music Note Balls: Play through 40 complete games
Golf Balls: Play through 50 complete games total.
Hexagon Balls: Play through 80 complete games.
Cat Skins: Use three revives (ad video offers)

Fruit Balls: Use five revive offers.
Mushroom Balls: Use 10 revive chances.
Pool Balls: Use 15 revive chances.
Pig Balls: pass five of the speed challenges.
Epcot Balls: pass ten of the speed challenges.

Bear Balls: pass fifteen of the speed challenges.
Hatching chicklets: Clear the third race track.
Easter Island Head: Clear the fifth race track.
Birds skins: Clear the tenth race track.
Pixelated Balls: Clear the fifteenth race track.

Minecraft Blocks: Clear the twentieth race track.
Alien Skins: Complete race track number thirty.
Hidden Skin 1: Jewelry (Day 1)
Hidden Skin 2: Fruity Drinks (Day 2)
Hidden Skin 3: Cheeseburgers (Day 3)

Hidden Skin 4: Donuts (Day 4)
Hidden Skin 5: Cupcakes (Day 5)
Hidden Skin 6: Wheels and Tires (Day 6)

Red Triangle Road: Complete one classic challenge.
Green Rectangles Road: Complete five classic challenges.
Purple Diamonds Road: Complete eight classic challenges.

Green Hexagon Road: Complete 12 classic challenges.
Blue Chevrons Road: Complete fifteen classic challenges.
Maroon Checkerboard Road: Play one day in a row.

Green Rectangle Row Road: Play three days in a row.
Purple Sidewinder Road: Play five days in a row.
Green/blue road with lanes: Play seven days in a row.

Blue small-chevron road: Play fourteen days in a row.
Red street-like road: Play 21 days in a row.
Green road with arrows: Play in 100 total games.

Purple road with plus signs: Play in 120 total games.
Green road with stars: Play in 150 games total.