Cheat Room
In old New York City, the second part of it, there is a fridge or a radiator thing on 
the ground on its side. Jump up and grab onto its side and then jump across and 
you'll find a nibbler $70 and loads of items.

Cheat List 

Invincibility: During game play, hold L, then press A. Hold R, then press X, Y, 
Release R, then press A. Hold R, then press X, Y, B, A, Black. Press Y, Back. 

Unlimited ammunition for current weapons: During game play, hold L, then press 
A. Hold R, then press X, Y, Release R, then press A. Hold R, then press X, Y, B, A, 
Black. Release R, then press B. Hold R, then press Back. 

Unlimited charge: During game play, hold L, then press A. Hold R, then press X, Y, 
Release R, then press A. Hold R, then press X, Y, B, A, Black. Release R, then 
press X. Hold R, then press Back. 

Unlimited lives: During game play, hold L, then press A. Hold R, then press X, Y, 
Release R, then press A. Hold R, then press X, Y, B, A, Black. Release R, then 
press A. Hold R, then press Back. 

Restore health: During game play, hold L, then press A. Hold R, then press X, Y, 
Release R, then press A. Hold R, then press X, Y, B, A, Black. Release R, then 
press Y. Hold R, then press Back. 

All extras: During game play, hold L, then press A. Hold R, then press X, Y, 
Release R, then press A. Hold R, then press X, Y, B, A, Black. Press B, Back. 
 
Unlock FMV :
Unlock FMV in the game by collecting Nibblers. 

Fry Fights Back level:
During game play, hold L, then press A. Hold R, then press X, Y. Release R, then 
press A, Hold R, then press X, Y, X, Y(2). Release R, then press A. Hold R, then 
press Back. 

Skip FMV sequences:
During game play, hold L, then press A. Hold R, then press X, Y. Release R, then 
press A. Hold R, then press X, Y, B, A. Release R, then Press Y(2). Hold R, then 
press Back. Press Start to skip FMV sequences during game play. 

Level 1: Finding the only Nibbler: 
First, find the hammer that is supporting all the junk. When Fry picks it up, he will 
die and the screen will say "Game Over". However, this is only a joke. After the 
Professor explains about "The Re-animator", he will give Fry the hammer. Go over 
to the lockers. Open the locker that reads "Hermes" and you will see a red cage 
with a Nibbler in it. Smash the cage with the hammer, and touch the Nibbler. Once 
a Nibbler disappear, it indicates that you have rescued it. You can only rescue the 
one in Hermes's locker after you get the hammer, because you have to smash the 
cage open

Level 1: Getting the key card:
After you get the hammer, go to Leela's locker. Smash the lock and open the 
door. It will have the key card you need to open the door.

Old New York: Musical levers:
When you go down the stairs and enter the bar, there will be a big table with five 
levers on it. When you activate them, they will play a sound. Refer to the lever 
that makes the lowest pitch as number 1 and the one for the highest pitch as 
number 5. To open up a window to find a Nibbler and some ammunition, use them 
in this order: 1, 5, 4, 2, 3.