3DDX

Codes are entered at "Select Music" screen. You will here a sound after entering the code and you will see a small icon on the screen side.

Code - Effect

DL, DR, DL, DR, DR, DL, DL, DR - 1,5x speed modifier
UL, DR, DL, U, UL, DR, D, D - 1,5x zoom
DL, DR, DL, DR, DR, UL, UL, U - 2x speed modifier
UL, DR, DL, U, UL, DR, U, U - 2x zoom
DL, DR, DL, DR, DR, DL, UL, DL - 4x speed modifier
DL, DR, DL, DR, DR, UL, DL, UL - 8x speed modifier
U, U, U ,U ,U ,U, U, U - cancel all modes
UL, UL, U, DR, DR, U, U, U - dark
DR, DR, DL, DR, DR, UL, U, D - hidden mode
DR, DL, UL, DR, DL, DR, DL, DR - random (feet)
DR, DL, UL, DR, DL, DR,DL, U - random (hands)
UL, UL, U, DR, DR, U, DL, DR - stealth mode
UL, UL, U, DR, DR, U, DR, DR - stealth mode (feet only)
UL, UL, U, DR, DR, U, DL, DL - s-tealth mode (hands only)
U , UL, U, DL, U, DR, DL, UL - unison