Earn the Team:
Collect the 3 hidden stars on Graveyard GP.
Hovercar:
Win the Platinum Cup in challenge mode.
Bird's Eye:
Collect the 3 hidden stars on Perilous Places GP.
Color Tint:
Collect the 3 hidden stars on Hoedown GP.
Concept Art:
Collect the 3 hidden stars on Jungle Jamboree GP.
Micro Marble:
Collect the 3 hidden stars on 911: Emergency GP.
Micro Soccer:
Collect the 3 hidden stars on Beachside GP.