Gradius Galaxies

While in play, pause the game and enter the following code :

Up, Up, Down, Down, L, R, L, R, B, A

To delete saved data, go to the options screen, select ''EXIT'', and then hold the L, R and B buttons, then press start.

Pause the game and enter the following:

Start a new mission on stage 1 of Gradius Galaxies. Somewhere in the stage, there are 2 strips of horizontal rocks (one longer than the other). Carefully travel through the small gap in between the 2 rocks and you'll get 5000 extra points. Complete the game as normal and when you return to stage 1 again on the next loop, the stage music will change to Gradius one from NES.

To get one speed-up and full power-up of laser, options, and shield; pause and enter:
Up, Up, Down, Down, L, R, L, R, B, A, Start
This code works only once per game, including all continues.

To momentarily get the power-ups listed above, and then self-destruct, pause and enter:
Up, Up, Down, Down, Left, Right, Left, Right, B, A, Start
This code may be used as often as you like.