Debug Menu: Pause the game. Hold L2 and press Left, Circle, Up, Down, Right, Right, Left, Triangle, Up, Down. You should hear a sound if you did the sequence correctly. Unpause and press Select to bring up the debug.
Unlimited lives: Pause the game and highlight the "Exit" option. Hold L2 and press Up, Up, Down, Right, Triangle, Down.
Invincibility: Pause the game and highlight the "Exit" option. Hold L2 and press Left, Right, Triangle, Down, Right, Left.
Level select: Pause the game and highlight the "Exit" option. Hold L2 and press Right, Right, Left, Right, Triangle, Down, Right. Now unpause the game and press Select to choose a new level.
Gex quotes: Pause the game and highlight the "Exit" option. Hold L2 and press Triangle, Left, Circle, Up, Down. Now unpause the game and press Select to force Gex to make a comment.
Rambling Gex: Pause the game and highlight the "Exit" option. Hold L2 and press Down, Right, Up, South, Right, Left, Right, Down, Down.
Level times: Pause the game and highlight the "Exit" option. Hold L2 and press Right, Triangle, Right, Left, Triangle, X. Now unpause the game and return to the Media Dimension. Press Select to view the level statistics or Square for the fastest times.
Put in this password Square, Circle, R1, Triangle, L1 R1, L1, R1, Circle, Circle, R1 Triangle, L1, R1, Circle, L1, Triangle Circle, R1, Triangle, L1, R1, Circle L1, Triangle, Circle, R1, L1
Get Best Ending
Put in this password 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
GBA
Get All Remotes
Create the following arrows on the password screen by holding the first button, then pressing the second button that is indicated. [B + Down] twenty times, B + Up, A + Right, [A + Left] two times, [B + Down] two times, B + Right, A + Right.
GBA
Get 255 lives
On the password screen, enter [right-A] for the whole screen. Then go to any tv (toon tv or scream tv). Die right away (it doesn't matter how) and now you have 255 lives.
Submitted By Annette
GBA
Toggle the Mona Lisa
In the scream level next to a door will be a bookcase.Do a tail attack on the books and the bookcase will retract.Hit the lever, then super jump up to the picture. It will give you a option to turn it on or off.
Submitted By Jonathan Collins (smokering@earthlink.net)
GBA
Access any Level
Choose password and press down 20 times then up then right left left down down right right