More saved game positions
Select the "New System Data" option, then hold L1 + R1 + L2 + R2 + Select + Start and press Circle to increase the number of saved game positions to fifty.
Alternate footstep sound effect
Pause the game and press L1(2), R1(2), Down, Up, Circle.
Mirror tracks
Finish in first place on all tracks. Then at the track selection screen, press Right.
View ending sequence
Complete all mirror tracks. Then at the title screen, press Select.
Double money
Save the game twice in different slots. Enter the bank and use the money transfer function. Then, move the money from one slot to the other to double your money.
Bonus animals
Purchase all five kangaroos and five dinosaurs. Then the black kangaroo and white dinosaur will be available.
Infinite Energy P1 800100EA 0FFF
Infinite Money P1 8014873C FFFF
Max Money P1 8014873C 967F
8014873E 0098
P1 Has All Animals 80148736 FFFF
Infinite Time in Bonus Round 8014AB20 0C69
Max Money in Bonus Round 80148894 03E7
Lap 1 is 0:00:00 8014AB20 0000
Lap 2 is 0:00:00 8014AB24 0000
Lap 3 is 0:00:00 8014AB28 0000
Japanese Version
Infinite Energy 800100EA 0BB8
Infinite Turbo 800100EA 06FF
Infinite Money 80143774 967F
80143776 0098
Infinite Gold 80142298 0E20
8015643C 03E7
P1 Has All Monsters 8014376E FFFF
Lap Time is 00:00:00 80142298 0000
8014229C 0000
801422A0 0000