Gradius 




All options

Pause the game by pushing Start, then press Up, Up, Down, 
Down, Left, Right, Left, Right, B, A. Then press Start to 
resume play with all the options. Note: This code will
only work once per stage. 




Continue

After your last ship is destroyed and the Game Over music is playing, 
press Down, Up, B, A, B, A, B, A, B and A. If you do the code 
correctly, you'll continue from where you left off. 




Rapid fire

Collect five powerup capsules so that the question mark is 
highlighted, then collect a sixth when your thousands digit 
is a zero for rapid fire.




Game Genie codes

cheat codes sent in from Planet Zeekois

NLLXZP Automatic fire is on for normal gun
YAAKIO Your ship is at the very top of the screen
KPPZZL Enemies farther ahead
NYPZZL No enemies except end guys