All Remotes
Enter this password for all remotes collected:

Square, O, R1, Triangle, L1,
R1, L1, R1, O, O, R1,
Triangle, L1, R1, O, L1, Triangle,
O, R1, Triangle, L1, R1, O,
L1, Triangle, O, R1, L1

Bonus Ending
Here's a password for anybody who is tired of trying to get all the remotes but wants to see the bonus ending. Just type in the following password at the "password" screen.

R1, R2, X, L2, Square
X, Square, R2, R2, R2, X
L2, Square, X, R2, Square, L2
R2, X, L2, Square, X, R2
Square, L2, R2, X, Square

Free Tour
If you want to take a free tour of Gex's world, enter the following password in at the Password Screen:

L1, R1, L2, L1, X
Circle, R2, R1, L2, R1
L2, L1, X, Circle, Square
Triangle, R2, R1, L2, L1
X, Circle, Square, Triangle, R2
R1, L2, Triangle

Cheat mode
To activate a cheat, pause the game and highlight "Exit". Then hold L2 while entering one of the cheats below:

Debug menu
Left, Circle, Up, Down, Right (2), Left, Triangle, Up, Down

GEX one-liners
? Triangle, Left, Circle, Up, Down (During game, push Select to hear lines.)

Invincibility
Left, Right, Triangle, Down, Right, Left

Level select
Right (2), Left, Right, Triangle, Down, Right. (During game, push Select to choose a level.)

Level statistics
Right, Triangle, Right, Left, Triangle, X (At the Media Dimension, Select displays game statistics; Square shows records.)

Rambling GEX
Down, Right, Up, Down, Right, Left, Right, Down (2)

Unlimited lives
Up (2), Down, Right, Triangle, Down