Gradius 2
30 Lives:
At the title screen, press Up, up, down, down, left, right,
left, right, B, A.
Max out abilities:
During game, press UP, UP, DOWN, DOWN, LEFT, RIGHT, LEFT,
RIGHT, B, A. Can only be used once per level.
Sound Test Menu:
Hold A+B and turn on the NES, when screen comes up press
start, hold A+B until title screen then press start again.