Gradius III and IV
Cheats
You must first beat the first boss and then you can enter the codes. You
will only be able to enter the codes once per beaten level. So if you beat
two levels without using the code you will be able to use 2 times on the
next level. Or you can save them and use them all in one level.
Double Weapon
First pause the game and enter: UP, UP, DOWN, DOWN, LEFT, RIGHT, LEFT, RIGHT,
SQUARE, TRIANGLE Now you will be at full power with double weapon.
Laser Weapon
Pause the game and enter: UP, UP, DOWN, DOWN, LEFT, RIGHT, LEFT, RIGHT, X,
CIRCLE You will be at full power with the laser weapon.
Hidden Modes, Gradius III
Once you reach Stage 9, the extra mode will appear. You will now be able
to play Cube Attack. If you get hit with a bullet from a big boss during
Stage 10 you will get levels from the first Gradius. If you play them once
you will always have access to them. Once you beat the game once you will
unlock the Extra Edit. This can be found in the Extra Mode. Beat the game
in Extra Edit Mode to have access to more weapons.
Extras in Gradius IV
Beat the entire game once to unlock the Boss Rush Mode. If you beat the entire
game with out continuing you will unlock the Stage Select feature.
