Level skip
Pause game play, hold [A] + [B], then press
[Left]x2, [Select].
Hidden picture
Pause game play, hold [Start], then press [Right],
[A], [Down], [A], [Right], [B], [Right],
[A].
Hidden picture two
Pause game play, hold [Start], then press [Select],
[A], [Left], [A], [Down], [Left], [A],
[Select]x2.
Hidden picture three
Pause game play, hold [Start], then press [A],
[B], [A], [Down], [Left], [A], [Down].