Unlimited pebbles:
     Pause game play, then press Down, Down, Left, Up, Up, Right, Up, Down.

Unlimited Energy:
     Pause game play, then press Down, Left, Right, Down, Down, Right,
Left, Down.

Unlimited Health:
     Pause  game  play,  then  press  Up, Right, Down, Up, Left, Down,
Right, Left.

Unlock all bonuses:
     Pause  game  play,  then  press Down, Left, Up, Down, Down, Left,
Right, Right.

Level Select:
     Pause game play, then press Up, Right, Right, Left, Right, Right,
Down, Down.