Christmas Mode
     Hold L + R and press B, B, X, B at the options menu. A sound will
confirm  that  you  entered  the  code correctly. Alternately, set the
system date to December 25 to unlock Apu in a Santa costume.

Drive as Smithers in Mr. Burns' Car
     Hold L + R and press B, B, Y, Y at the options menu. A sound will
confirm that you entered the code correctly.

Drive Nuclear Bus
     Hold L + R and press B, B, Y, A at the options menu. A sound will
confirm that you entered the code correctly.

Drive Red Soapbox Racer
     Hold L + R and press B, B, Y, X at the options menu. A sound will
confirm that you entered the code correctly.

Extra Money
     Hold  L  +  R and press Y four times at the options menu. A sound
will confirm that you entered the code correctly.

Flat Characters
     Hold  L  +  R and press X four times at the options menu. A sound
will  confirm  that  you  entered  the  code correctly. All the people
(except the character you selected) will be flat.

Halloween Mode
     Hold L + R and press B, B, X, A at the options menu. A sound will
confirm  that  you  entered  the  code correctly. Alternately, set the
system date to October 31 to unlock Bart in a Frankenstein costume.

More Camera Views
     Hold  L  +  R and press B four times at the options menu. A sound
will confirm that you entered the code correctly.

New Year's Day Mode
     Hold L + R and press B, B, X, Y at the options menu. A sound will
confirm  that  you  entered  the  code correctly. Alternately, set the
system date to January 1 to unlock Krusty in a tuxedo.

Nighttime
     Hold  L  +  R and press A four times at the options menu. A sound
will confirm that you entered the code correctly.

Overhead View
     Hold L + R and press X, X, X, Y at the options menu. A sound will
confirm that you entered the code correctly.

Show Collision Lines
     Hold L + R and press B, B, A, A at the options menu. A sound will
confirm that you entered the code correctly.

Slow Motion
     Hold L + R and press A, X, B, Y at the options menu. A sound will
confirm that you entered the code correctly.

Stop and Reset Timer
     Hold L + R and press X, B, Y, A at the options menu. A sound will
confirm  that  you entered the code correctly. Press R to start, stop,
and reset the timer.

Thanksgiving Mode
     Hold L + R and press B, B, X, X at the options menu. A sound will
confirm  that  you  entered  the  code correctly. Alternately, set the
system  date  to  the  third Thursday in November to unlock Marge in a
pilgrim dress.

Unlock the Car Built For Homer
     Complete all ten levels in mission mode.