From the title screen choose "Edit Game" then in the Menu choose "File" then "Load".
The game should then display the contents of your memory card (if it
has RPG Maker game data on it). Next press "Circle" then "UP" to highlight your
memory card in the small box above. Press "X" then choose "Sample" from the
menu. Select the Fu-Ma sample game data and enter the password below when
prompted. The sample game will then be loaded into memory for you to play
around with.

Gives access to the Fu-Ma game for editing.
Circle, X, UP, Left, Down, Right, Square, Triangle