Hidden mini-game:
To unlock a mini-game, while on a boat, hold Circle and press X 55 times. Arrange the tiles in order from 1 to 15 to collect 100 Gold.
Extra menu:
Unlock the following options at the “Extra” menu by performing the corresponding tasks:
Art Gallery – Beat the game. This option allows all unlocked game art to be viewed.
Bestiary – Beat the game. This option displays information about each type of monster you have defeated.
Music Player – Beat the game. This option allows all songs from the game to be replayed.
Time Chamber – Beat the Labyrinth Of Time. This options allows you to replay any completed Floor from the Labyrinth Of Time.
Beat the indicated task to unlock more entries in the Art Gallery menu:
Art Gallery 01-56 – Have all monsters in the Bestiary.
Art Gallery 57 – Beat Floors 1-10 in the Time Chamber with unlock blue seal.
Art Gallery 58 – Beat Floors 11-20 in the Time Chamber with unlock blue seal.
Art Gallery 59 – Beat Floors 21-30 in the Time Chamber with unlock blue seal.
Art Gallery 60-67 – Beat the game.
Art Gallery 68-75 – Beat the game.
Art Gallery 76 – Beat the game twice, including all 30 Floors in Time Chamber and all monsters in the Bestiary.