Complete the following tasks to jump to a new stage:
Jump to level three after defeating Core Fighter
In level 1, when the thousands digit of your score is even,
destroy 4 hatches
Jump to level four:
Destroy Xaerous Core at end of level 2 within 2 seconds of its
core turning blue
Jump to level five after completing level:
Destroy 10 stone heads in level 3
Full Option Command
While playing the game, push Start, then press UP, UP, DOWN,
DOWN, LEFT, RIGHT, LEFT, RIGHT, B, A, START.
Push Down, Up, B, A, B, A, B, A, Start at the Game Over Screen.
Note: You can use only once per game.
Get 10K Bonus Points
Get 6 powerups so that the ? box is selected. Then, when the
thousands digit of your score is a 5, get a 7th powerup and you will
get 10K bonus points.
KONAMI ONE, GRADIUS ONE messages:
While turning the power ON or resetting the system Hold B + A.