Gradius

• Codes

  Effect	Code
  Continue	At the Game Over Screen, press Down, Up, B, A, B, A, B, A, Start. Can only be used once per game.
  Full Option Command	Press start during the game, then press UP UP DOWN DOWN LEFT RIGHT LEFT RIGHT B A START.

• Level warps

  Accomplish the following tasks to warp to a new level.
  

  Effect	Code
  Warp to level 3 after defeating Core Fighter	In level 1, when the thousands digit of your score is even, destroy 4 hatches
  Warp to level 4	Destroy Xaerous Core at end of level 2 within 2 seconds of its core turning blue
  Warp to level 5 after beating level	Destroy 10 stone heads in level 3

Easter Eggs

• Secret Message

  Hold B + A while turning the power on or resetting to get the following message:
  
  KONAMI ONE
  GRADIUS ONE
  

Secrets

10,000 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 10,000 bonus points.