Highlight Hard mode and press Right Select button (x4).
Another Mode
"At the song select screen, press: DOWN, DOWN, DOWN, LEFT, LEFT, RIGHT, RIGHT
Cheat menu
Hold both Select buttons for Player-1 and Player-2. Then press Start.
Note: To cancel cheats push Up (x4) before the first song begins.
Dancers face left
Press Left (x8) at the song selection screen. (The word "Left" confirms correct entry.) In Left mode, dancers face left.
Dancers face right
Press Right (x8) at the song selection screen. (The word "Right" confirms correct entry.) In Right mode, dancers face right.
Hidden Mode
To activate Hidden mode, push the joystick UP, DOWN, UP, DOWN, UP, DOWN prior to selecting a skill level. (Hidden mode will make half of the arrows disappear.)
Little difficulty
Press LEFT, DOWN, RIGHT, DOWN, LEFT, DOWN, RIGHT, DOWN, UP at the song selection screen. (The word "Little" confirms correct entry.) In Little mode, dancing is easier.
Maniac difficulty
Press DOWN, DOWN, DOWN, RIGHT, UP, UP, LEFT or DOWN, DOWN, LEFT, LEFT, LEFT, RIGHT, RIGHT, RIGHT, LEFT, RIGHT prior to selecting a skill level. (The word "Maniac" confirms correct entry.)
Note: To disable Maniac mode, press UP(x8) at the song selection screen.
Play as Socket Man
Hold left Select and press Start.
Shuffle mode
Press UP, DOWN, LEFT, RIGHT, DOWN, UP, RIGHT, LEFT at the song selection screen. (The word "Shuffle" confirms correct entry.) In Shuffle mode, there are new dance steps.
Unlock 2P Modes
To unlock 2-Player modes, push 1P Start button. Then hold 2P's right and left Select buttons while pushing 2P Start. (This code unlocks Couple, VS, and Double modes.)