Passwords.
While on the world map press Select then A, then on the password screen enter the following chain.
Key.
Diamond: A blue diamond. Gameboy: A solid blue square with dots inside.
YinYang: A yellow yinyang. U: a green U.
Plus: A green plus. Square: A blue square.
Angle: A red angel at 2 o’clock. Hand: A pink round hand.
Frown: A green frowning smiley. Triangle: A yellow triangle.
X: A blue throwing star. Smiley: A yellow smiley face.
Circle: A red circle. Exclamation: A fat green exclamation point.
Lightning: A blue lightning bolt. Heart: A pink heart.
Password Effect
Square, Angle, Hand, Heart, Smiley, Angle, Smiley Cave 1 Clear
Square, Angle, Hand, Smiley, Hand, YinYang, Smiley Cave 2 Clear
Plus, Square, Angle, Angle, YinYang, Exclamation, X Cave 3 Clear
Plus, Square, Angle, Angle, Angle, Diamond, X City 1 Clear
Plus, Square, Angle, Angle, Angle, Heart, X City 2 Clear
Plus, Square, Angle, Angle, Angle, YinYang, X City 3 Clear
Plus, Square, Angle, Angle, Angle, Lightning, X Clouds 1 Clear
Plus, Square, Angle, Angle, Angle, X, X Clouds 2 Clear
Plus, Square, Angle, Angle, Angle, Angle, X Clouds 3 Clear
Plus, Square, X, Angle, Diamond, Smiley, X Desert 1 Clear
Square, Angle, Hand, U, Circle, Hand, Smiley Desert 2 Clear
Square, Angle, Hand, U, Heart, X, Smiley Desert 3 Clear
Square, Angle, Hand, Gameboy, Circle, Hand, Smiley Jungle 1 Clear
Square, Angle, Hand, Diamond, Smily, Angle, Smiley Jungle 2 Clear
Square, Angle, Hand, U, Lightning, Triangle, Smiley Jungle 3 Clear
Square, Angle, Hand, Hand, Heart, X, Smiley Snow 1 Clear
Square, Angle, Hand, Hand, Smiley, Angle, Smiley Snow 2 Clear
Plus, Square, Angle, Angle, Angle, Gameboy, X Snow 3 Clear
User Notice 
