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.

Intentionally fail a mission five times to have the option to skip the mission.
Note: This cannot be done on the final mission.

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

At the options menu, hold L + R and press B(2), X, A. If you entered the code correctly,
you will hear a sound. Alternately, set the system date to October 31 to unlock Halloween
Bart (dressed in a Frankenstein costume) under the "?" at the character selection screen.

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

At the options menu, hold L + R and press B(2), X, B. If you entered the code correctly,
you will hear a sound. Alternately, set the system date to December 25 to unlock Christmas
Apu (dressed in a Santa costume) under the "?" at the character selection screen.

At the options menu, hold L + R and press B(2), X(2). If you entered the code correctly,
you will hear a sound. Alternately, set the system date to the third Thursday in November
to unlock Thanksgiving Marge (dressed in a Pilgrim costume) under the "?" at the character
selection screen.

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.

At the options menu, hold L + R and press X(3), Y. If you entered the code correctly, you
will hear a sound.

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

At the options menu, hold L + R and press X, B, Y, A. If you entered the code correctly,
you will hear a sound. There are no passengers, pedestrians, or traffic in this mode.
Press Horn to start, stop, and reset the timer.

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

At the options menu, hold L + R and press B(2), Y, X. If you entered the code correctly,
you will hear a sound.

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.

At the options menu, hold L + R and press B(2), X, Y. If you entered the code correctly,
you will hear a sound. Alternately, set the system date to January 1 to unlock New Year's
Krusty under the "?" at the character selection screen.

At the options menu, hold L + R and press A(4). If you entered the code correctly, you
will hear a sound.

At the options menu, hold L + R and press B(4). If you entered the code correctly, you
will hear a sound. Additional views will be unlocked at the pause screen. To unlock
another set of views, hold L + R and press B, A(3) at the options menu.

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.

At the options menu, hold L + R and press X(4). If you entered the code correctly, you
will hear a sound. All the people (except the character you selected) will be flat.