Mario Kart Wii (extra secret character: Rosalina) 

 

> Rosalina is a character from Super Mario Galaxy.

> So to unlock her, you must have a Super Mario Galaxy's saved game on your Wii HDD.

> Play then many games in Solo Mode and in Multiplayer Mode.

> After a while, when you switch on the Wii, a message informs that Rosalina is unlocked...

 Mario Kart Wii (Quick Start)

> During the countdown, when the "2" number is displaying,  HOLD the gas button (don't release it!).

> But if you hold the gas button as soon as "2" displays, you'll stall in a cloud of smoke...

> Then wait half a second after the number displays (if you press too much early, you might have the time to try to release and press again).

> When "start" displays, you start as a rocket!

> Flames and lines appear to improve the speed effect.

> It works with karts and bikes, and for Grand Prix, Time Trials, VS Race modes and Nintendo WFC...

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 Mario Kart Wii (Turbo Boost after retrieval)

> This Boost works after you fall off the stage, when Lakitu pick you up.

> Wait that Lakitu drop you, then press and HOLD the gas button as soon as your vehicle hits the ground.

> You start as a rocket! Flames and lines appear to improve the speed effect.

> It works with karts and bikes, and for Grand Prix, Time Trials, VS Race modes and Nintendo WFC...