Level select
Press [Down], [Up], (C-Left), [Down], (C-Left), (C-Right), [Down], (C-Right) at the setup screen.
Fifty lives
Press [Up]x2, [Down]x2, [Left], [Right], [Left], [Right], (C-Left), (C-Right), (C-Left), (C-Right) at the setup screen.
Monochrome mode
Press [Up], [Down], [Right], (C-Left), [Down], [Up], [Left], (C-Right), [Up], [Down] at the setup screen.
CPU control
Quickly press ([Left], [Right], [Up], [Down], (C-Left), (C-Right), (C-Left), (C-Right)) three times at the setup screen.
Extra lives
Enter one of the following passwords to start the game with 110 extra lives at the corresponding difficulty level.
Easy difficulty level
Enter "BSBBBBTJBB" as a password.
Normal difficulty level
Enter "BCBBLBTJBB" as a password.
Insane difficulty level
Enter "BFBBBCTJBB" as a password.
Power-ups
Quickly press one of the following default controller actions during game play to make the corresponding power-up appear next to your character. Note: Each power-up may only be enabled five times per level.
Shield
Press [Down], [Left], (C-Left), (C-Right).
Turbo
Press [Left]x2, [Right]x2, (C-Up).
Two-way shot
Press [Up], (C-Up), [Up], (C-Up).
Three-way shot
Press [Right]x2, (C-Left), (C-Down).
Four-way shot
Press [Down]x2, [Up], (C-Right).
Pulse wave
Press [Up], [Down], (C-Right), (C-Left).
Flame thrower
Press [Down], [Right], [Down], [Right], (C-Right).
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