Valis 3

Level select:
Hold A + B + C + Up and press Start at the title screen. Release A, B, C, and Up simultaneously when the screen turns black. Release Start when the phrase "Select Map 000" is displayed. Press Up or Down to select a starting level.

View intermission and end sequences:
Hold A + C + Up/Left and press Start at the title screen. A menu will appear that will allow all intermissions and the end scene to be displayed.

Music test (Japanese version):
Hold A + B + C and press Start at the title screen.

Sound test (Japanese version):
Hold B + Down/Right and press Start at the title screen.