Level select:
Press Start to pause game play. Select "Codes" at the option screen,
then press Down, Left(2), Down, Left, Down, Right, Down, Left, Down.
A message will confirm correct code entry. Return to the main menu
and hold R1 to display the level selection screen.
Super weapons:
Press Start to pause game play. Select "Codes" at the option screen,
then press Right, Up, Down(2), Up, Right(2), Up, Down(2).
A message will confirm correct code entry.
Additional special features:
Press Start to pause game play. Select "Codes" at the option screen,
then press Left, Down, Up, Left, Right, Up, Down, Left, Right, Down.
A message will confirm correct code entry.
Additional items:
Press Start to pause game play. Select "Codes" at the option screen,
then press Right(5), Left (3), Up(2).
A message will confirm correct code entry.
Easy mode:
Press Start to pause game play. Select "Codes" at the option screen,
then press Up, Down(8), Up. A message will confirm correct code entry.
Normal mode:
Press Start to pause game play. Select "Codes" at the option screen,
then press Up, Down, Up, Down, Up, Down, Up, Down, Up, Down.
A message will confirm correct code entry.
Difficult mode:
Press Start to pause game play. Select "Codes" at the option screen,
then press Down, Up(8), Down. A message will confirm correct code entry.
Higher quality video:
Note: You must have a progressive scan television monitor to use this
code. If you enable it without this type of display, the screen will
turn blue and you will have to reboot the PlayStation2. Press Start
to pause game play. Select "Codes" at the option screen, then press
Right, Up, Right(2), Up, Right(3), Up, Right.
A message will confirm correct code entry.
Sites: