Holiday Easter Eggs
To see various holiday Easter Eggs, set your clock to the corresponding date. Here's what happens on each holiday:
January 1st: Fireworks appear in the courtyard.
February 14th: Hearts appear on Snack pickups.
March 17th: The fountain is green and chimneys emit green smoke.
July 4th: Fountain and chimneys on house are colored red, white & blue. Fireworks in the courtyard are also red, white & blue.
October 31st: Bats can be found hanging in the courtyard.
December 25th: Snow appears in the courtyard.
December 31st: Fireworks appear in the courtyard.

Unlock All Power-Ups
To unlock all power-ups, pause the game and hold all four shoulder buttons, then press: CIRCLE, SQUARE, CIRCLE, SQUARE, CIRCLE, SQUARE, SQUARE, SQUARE, CIRCLE, CIRCLE, SQUARE, CIRCLE, CIRCLE, CIRCLE.

Unlock Credits
To unlock the Credits, pause the game and hold all four shoulder buttons, then press (quickly): SQUARE, CIRCLE, CIRCLE, SQUARE, CIRCLE, SQUARE.

Unlock Movies
To unlock the movies, pause the game and hold all four shoulder buttons. Then press: SQUARE, SQUARE, SQUARE, CIRCLE, CIRCLE, CIRCLE, SQUARE, CIRCLE, SQUARE.