PS1
Stage select:
Enable the "Goodies option" code(see below). Then, press Left, Right, X, Triangle, Left, Up within three seconds at the "Press Start" screen. A white screen flash, sound effect, and display of the cheat name will confirm correct code entry. An option that will allow selection of an individual stage within a level will become available. Note: This code may cause music and graphic problems.
PS1
Nakomi mode:
Press Up(2), Down(2), Left, Right, Left, Right, X, Circle within three seconds at the "Press Start" screen. A white screen flash, sound effect, and display of the cheat name will confirm correct code entry. All 3D characters except the Boss will be flattened.
PS1
Big head player:
Press Square, Circle(2), Square, Up, Square, Circle(2), Square, Triangle within three seconds at the "Press Start" screen. A white screen flash, sound effect, and display of the cheat name will confirm correct code entry.
PS1
Big Head aliens:
Press Square, Circle(2), Square, Up, Square, Circle(2), Square, X within three seconds at the "Press Start" screen. A white screen flash, sound effect, and display of the cheat name will confirm correct code entry. Note: This code does not affect the Boss.
PS1
Turbo mode:
Press X, Square, Triangle, Circle, X, Square, Triangle, Circle, L2, R2 within three seconds at the "Press Start" screen. A white screen flash, sound effect, and display of the cheat name will confirm correct code entry. Press Circle during game play to run faster. Note: This will also use any item currently being held by your character.
PS1
Grayscale graphics:
Press X(2), Triangle(2), Square(2), Circle(2), Up, Down within three seconds at the "Press Start" screen. A white screen flash, sound effect, and display of the cheat name will confirm correct code entry.
PS1
Sepia graphics:
Press Left(10) within three seconds at the "Press Start" screen. A white screen flash, sound effect, and display of the cheat name will confirm correct code entry.
PS1
Goodies option:
Press Triangle, Square, Circle, Left, Square, Triangle, Square, Circle, Left, Square within three seconds at the "Press Start" screen. An additional selection will appear at the end of the options menu that allows level selection, all weapons, unlimited ammunition, and the ability to view the FMV sequences.
