Instructions
Start the game and select the “Circuit” mode option with your Wii remote. Select the character and kart you want to race with.
Complete every course in the Flower Cup and Mushroom Cup, and finish in at least third place to unlock the Star Cup.
Finish the Star Cup by winning at least third place and you’ll unlock the Special Cup level.
Win at least third place in both the Banana Cup and Shell Cup races to unlock the Leaf Cup courses.
Finish the Leaf Cup races and get third place overall to unlock the Lightning Cup, which is the final unlockable course.