Invincibility
Press [Right], [X], [R1], [Triangle],
[Up], [L2], [X], [Left], [L1], [Circle],
[X], [R2] at the "Press Start" screen. "Press
Start" will flash to confirm correct code entry. Note: The
game cannot be saved when codes are enabled.
All weapons
Press [Up], [Down], [X], [Square],
[R1], [Triangle]x2, [Left], [Circle], [L1]x2,
[Right] at the "Press Start" screen. "Press
Start" will flash to confirm correct code entry. Note: The
game cannot be saved when codes are enabled.
Level select
Press [R2], [Triangle], [Left], [Circle],
[Square], [L2], [Left], [Up], [X], [Down],
[L2], [Square] at the "Press Start" screen.
"Press Start" will flash to confirm correct code entry.
Note: The game cannot be saved when codes are enabled.
Full bolt
Press [Left], [Right], [Up], [Down],
[L1], [Circle], [Triangle], [R2], [Left],
[Down], [Square]x2 at the "Press Start" screen.
"Press Start" will flash to confirm correct code entry.
Note: The game cannot be saved when codes are enabled.
Full spread
Press [L2], [R1], [Circle], [L2],
[Down], [Up], [L1], [Right], [Left],
[X] at the "Press Start" screen. "Press Start"
will flash to confirm correct code entry. Note: The game cannot
be saved when codes are enabled.
Full homing
Press [Right], [Up], [Square], [L1],
[Left]x2, [L1], [Left], [Circle], [Left]
at the "Press Start" screen. "Press Start"
will flash to confirm correct code entry. Note: The game cannot
be saved when codes are enabled.
Full beam
Press [Left], [Circle], [Triangle],
[Right], [L1], [Square], [Left], [R1]x2,
[Triangle] at the "Press Start" screen. "Press
Start" will flash to confirm correct code entry. Note: The
game cannot be saved when codes are enabled.
Full area effect
Press [Left], [X], [Triangle], [Up],
[X], [Down], [Square], [L2], [Left],
[R2] at the "Press Start" screen. "Press Start"
will flash to confirm correct code entry. Note: The game cannot
be saved when codes are enabled.
No power-up drops
Press [Down], [Up], [X], [Square],
[Down], [Up], [X], [Square], [L1], [L2],
[Square], [Circle] at the "Press Start" screen.
"Press Start" will flash to confirm correct code entry.
Note: The game cannot be saved when codes are enabled.
Boss mode
Press [R1], [Triangle], [Down]x2, [X],
[L2], [Left], [Square], [Right], [Triangle],
[R2], [L1] at the "Press Start" screen. "Press
Start" will flash to confirm correct code entry. Note: The
game cannot be saved when codes are enabled.
Training missions
Press [Square], [Up], [L2], [Left],
[Triangle], [X], [R2], [Circle], [Right],
[R1], [Square], [Circle] at the "Press Start"
screen. "Press Start" will flash to confirm correct
code entry. Note: The game cannot be saved when codes are enabled.
Boss mode
Press [R1], [Triangle], [Down]x2, [X],
[L2], [Left], [Square], [Right], [Triangle],
[R2], [L1] at the "Press Start" screen. "Press
Start" will flash to confirm correct code entry. Note: The
game cannot be saved when codes are enabled.
Agent data
Press [Up], [Down], [Circle], [R2],
[Left], [L2], [Right], [X], [R2], [Square],
[Up], [R1] at the "Press Start" screen. "Press
Start" will flash to confirm correct code entry. Note: The
game cannot be saved when codes are enabled.
Alien data
Press [Square], [L1], [Circle], [L2],
[Down], [Triangle], [R1], [Right], [X],
[Left], [R2], [Triangle] at the "Press Start"
screen. "Press Start" will flash to confirm correct
code entry. Note: The game cannot be saved when codes are enabled.
"Making Of" feature
Press [Circle], [R2], [L2], [Circle],
[Triangle], [Down], [Square], [X], [Right],
[L1], [X], [Up] at the "Press Start"
screen. "Press Start" will flash to confirm correct
code entry. Note: The game cannot be saved when codes are enabled.
Versus mode
Hold [L1] + [R1] and press [Square]
+ [Circle] at the title screen.