At the main menu, press Up(2), Down(2), Left, Right, Left, Right, Circle, X to unlock the "Extra Option" menu.

While selecting original mode or arrange mode, hold L1 + R1 to unlock an option to change the music played in the game.

For each stage completed in arrange mode (there are a total of 26) one illustration by Ayami Kojima, the artist for Akumajou Dracula X: Gekka no Yasoukyoku/Castlevania: Symphony of the Night and Akumajou Dracula X68000/Castlevania Chronicles will be unlocked at the "Special Option" screen under the "Option" menu.

Successfully complete arrange mode to unlock time attack mode.