Successfully complete all ten missions in mission mode to unlock The Homer car. The car is selectable in any mode by choosing Homer's picture at the car select screen.
Hidden New Year's character
Set the system date to January 1 to unlock New Year's Krusty under the "?" at the character selection screen.
Hidden Christmas character
Set the system date to December 25 to unlock Christmas Apu (dressed ! in a Santa costume) under the "?" at the character selection screen.
Hidden Halloween character
Set the system date to October 31 to unlock Halloween Bart (dressed in a Frankenstein costume) under the "?" at the character selection screen.
