Press A + B + C + D when making a selection on the "Stage Start"
screen. Game play will begin at four stages past the currently
highlighted stage, allowing stages 5 through 8 to be selected.
Press Up(2), Down(2), Left, Right, A, B while your fighter is
flashing when the match starts or after a probe explodes.
View demonstration sequences:
Press Left(7), Right at the title screen. Press A, B, C, D on
controller one to view the first four demonstration sequences.
Press the same buttons on controller two to view the last four
Enter AAA as a name on the high score screen. The initials will
automatically change to "SNK".