Unlock Hovercar
Win the Platinum Cup in challenge mode.

Unlock New Vehicle
Win the Platinum Cup in championship mode.

Unlock Micro Soccer
Find the three hidden stars located in Beachside GP in single player mode. They 
are located to the left outside of the submarine helmet, behind the sand castle 
before the beach ball, and underneath the first jump at the very beginning.

Unlock Micro Marble
Find the three hidden stars located in 911: Emergency GP in single player mode. 
They are located at the first sewerage drain to the right at the start, among the 
group of boxes close to the start, and behind a wall after going down a flight of 
stairs. 

Big Heads
Find the three hidden stars located in This Ol' House GP in single player mode.They 
are located behind the jack-in-the-box close to the start, in a bon-bon located on 
the wooden planks above where is possible to see the man taking a bath down 
below, and in a pipe that is located directly after the big spider -- the star should 
be to the right once you go through the pipe. 

Mirror Tracks
Find the three hidden stars located in Toy Town Sci Fi GP in single player mode. 
They are located after the first teleport go left, there should be one located on 
underneath a pipe and next to a cup, after going through the first teleport, another 
star is located to the right on a arm of a chair, and a star is located behind a pillar 
to the right of the speed up the has the freeze and pause power-ups.

Unlock Concept Art
Find the three hidden stars located in Jungle Jamboree GP in single player mode. 
They are located behind the first jump; after passing the first check point do a 90 
degree left turn and go in the square hole that is covered in fire (a short cut), and 
after going through the short cut go ahead a bit more, and the last one should be 
visible behind a broken statue head laying on the ground -- you might need to 
jump in order to get the star. 

Unlock Color Tint
Find the three hidden stars located in Hoedown GP in single player mode. They are 
located in the first party popper after going up the convey belt, underneath the 
tapping foot of the woman with hairy legs, and at the end of driving the hay bails 
road drop down slowly and land on another hay bail -- below that has another star 
on it.

Bird's Eye
Find the three hidden stars located in Perilous Places GP in single player mode. 
They are located behind the grenade immediately after the moving piston, in a 
lava rock along the lava path; and at the three quarters point of the lap, after 
going up a hill where there red barrels are around, go to the left and the star 
should be quite visible.

Earn The Team
Find the three hidden stars located in Graveyard GP in single player mode. They 
are located behind a rock just before the bridge with the skeleton of the man with 
the weird glasses; destroy the sail on the coffin path next to the sign 'Bob Fat and 
Bald 1802 - 1852' and in a secret shortcut located right of the fast forward power-
up after the man in the jail cell.