Unlock All Levels
     At  the  Level  Selection  screen,  hold  Circle + X + Triangle +
Square  +  L1  +  L2 + R1 + R2 on Controller Two and press Down, Down,
Right.

99 Lives
     At the Level Selection screen, hold L2 + R2 on Controller Two and
press  Up,  Down, Left, Right. Then hold L1 + R1 on Controller Two and
press Right, Left, Down. Now release the buttons and press Up.

All Damage Takes 1 Point
     At the Level Selection screen, hold L1 + R1 on Controller Two and
press  Triangle,  X,  Square, Circle. Then, hold L2 + R2 on Controller
Two  and  press  Circle,  Square,  X.  Release  the  buttons and press
Triangle.

Invincibility in Caves
     At  the Level Selection screen, press R2, R2, L2, L2, L2, R1(7x),
L2, L2, L2, R2, R2, R2, R1(7x) on Controller Two.

Refill Energy
     Pause  the  game  and  press  Up, Up, Down, Down, Square, Circle,
Square, Circle, L1, R1 on Controller Two.

Rocket Potato
     Pause  the  game  and  press  R1,  L2, R2, L1, Left, Right, Up on
Controller Two.

Padapada Potato
     Pause  the  game  and  press R1, L2, R2, L1, Left, Right, Down on
Controller Two.

Fuwafuwa Potato
     Pause  the  game and press R1, L2, R2, L1, Left, Right, Circle on
Controller Two.

Jumping Potato
     Pause the game and press R1, L2, R2, L1, Left, Right, Triangle on
Controller Two.

Ice Potato
     Pause  the  game and press R1, L2, R2, L1, Left, Right, Square on
Controller Two.

Marine Potato
     Pause  the  game  and  press  R1,  L2,  R2, L1, Left, Right, X on
Controller Two.