C: The Contra Adventure Codes -

Unlimited Super bombs:
Press Square(2), Right, Down(2), Left, Square, Triangle at the title screen. A sound will confirm correct code entry.

Machine gun:
Press Right(2), Square, Triangle, Right, Left, Down(2) at the title screen. A sound will confirm correct code entry.

View FMV sequences:
Press Triangle(2), Down, Square, Up(2), Left, Triangle at the title screen. A sound will confirm correct code entry.

Unlimited lives:
Press Up, Right, Square, Triangle, Right, Left, Square, Triangle at the title screen. A sound will confirm correct code entry.

Level select:
Press Down, Left, R1, R2, L1, L2 at the title screen. A sound will confirm correct code entry.

Bonus character:
Press Up(3), R1, L1, R2, L2, Down at the title screen. A sound will confirm correct code entry.