Here are some cheats and tips for the game 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:
Hold A + B + C
and press Start at the title screen.
Sound test:
Hold B + Down/Right
and press Start at the title screen.