GEX:  ENTER THE GECKO

100% Password  L1, R1, L2, L1, X, Circle, R2, R1, L2, R1, L2, L1, Circle, Square, Triangle, R2, R1, L2, R1, X, Circle, Square, Triangle, R2, R1, L2, Triangle. (Thanks to seayjh@mindspring.com)

Debug Menu  Pause, press and hold R2 or L2, and press <, Circle, Up, Down, >, >, <, Triangle, Up, Down, Then, press Select. (Thanks to PEZMAN1221@aol.com)

Final 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. (Thanks to RBerry5203@aol.com)

Infinite Lives  Pause, press and hold L2, and press Up, Up, Down, >, Triangle, Down.

Invincibility  Pause, press and hold L2, and press <, >, Triangle, Down, >, <.

Level Select  Pause, press and hold L2, and press >, >, <, >, Triangle, Down, >. Then, press Select on the media dimension screen. (Thanks to PEZMAN1221@aol.com)

One Liners  Pause, press and hold L2, and press Triangle, <, Circle, Up, Down. Then, press Select during gameplay. (Thanks to Y TiGgEr@aol.com)

Rambling Gex  Pause, press and hold L2, and press Down, >, Up, Down, >, <, >, Down, Down.

Timer  Pause, press and hold L2, and press >, Triangle, >, <, Triangle, X.