Jet Moto 2:

Use the following steps to enable all tracks, including the alternate tracks:

Set master difficulty and five laps per race at the options screen

Press X on Li'l Dave at the 1 player select screen, then go back to the title screen.

Press Up, Down, Left, Right, R2, R1, L2, L1 within four seconds at the title screen.

Set three laps per race at the options screen.

Press X on Wild Ride at the 1 player select screen, then go back to title screen.

Press Up, Left, Down, Right, Square, R2, Circle, L2 within four seconds at the title screen.

Set amateur difficulty and turbos off at the options screen.

Press X on Bomber at the 1 player select screen, then go back to title screen.

Press Up, Down, Left, Right, Up, Down, Left, Right within four seconds at the title screen.

Set professional difficulty and turbos on at the options screen.

Press R2, R1, L1, L2, R2, R1, L1, L2 within four seconds at the title screen.

Race as Enigma:

Set master difficulty and 6 laps per race at the options screen.

Press Left, Square, Down, Triangle, Right, Circle, L1, R1 within

four seconds at the title screen.