Expert difficulty...
	Grand Prix - Mirrored Cups...
	Start boost...
	Various Characters...

Win all five mirrored Grand Prix cups.

Win all five standard Grand Prix cups.

At the start of any race, during the countdown the screen will fade to black. Each time, tap the accelerator to change the get a level 1, 2, or 3 boost start. Each successful tap will change the color of your exhaust, while a miss-tap will reset it to zero.

Unlockable	How to unlock
AGES	World Tour Mode: Superstar Showdown - Win Ranger Rush (Sprint) and purchase for 165 stars.
Alex Kidd	Automatically unlocked on December 25, 2012.
Amigo	World Tour Mode: Sunshine Coast - Win Studio Scrapes (Versus) and then purchase for 8 stars.
Danica Patrick	World Tour Mode: Frozen Valley - Win Pirate Plunder (Race) and then purchase for 16 stars.
Doctor Eggman	Win all five mirrored Grand Prix cups.
Gilius Thunderhead	World Tour Mode: Moonlight Park - Win Molten Mayhem (Ring Race) and purchase for 120 stars.
Gum	World Tour Mode: Moonlight Park - Win Jet Set Jaunt (Boost Challenge) and purchase for 105 stars.
Joe Musashi	World Tour Mode: Twilight Engine - Win Shinobi Showdown (Versus) and purchase for 85 stars.
Mii	Win all five standard Grand Prix cups.
NiGHTS	World Tour Mode: Scorching Skies - Win Carrier Crisis (Sprint) and purchase for 80 stars.
Pudding	World Tour Mode: Twilight Engine - Win Hatcher Hustle (Sprint) and purchase for 50 stars.
Reala	World Tour Mode: Superstar Showdown - Win Nightmare Meander (Ring Race) and purchase for 160 stars.
Shadow the Hedgehog	World Tour Mode: Frozen Valley - Win Seaside Scrap (Versus) and then purchase for 35 stars.
Vyse	World Tour Mode: Scorching Skies - Win Rogue Rings (Ring Race) and then purchase for 30 stars.