Tenchu San Portable

At the item selection screen, Hold R + L, press Square(3), RIGHT, DOWN, LEFT, UP.

At the item selection screen, Hold R + L + Triangle, press UP, UP, DOWN, DOWN, LEFT, RIGHT, LEFT, RIGHT, release Triangle and press Square(3).

Pause the game and press LEFT, RIGHT, UP, DOWN, Square(3).

At the start screen, press UP, DOWN, RIGHT, LEFT, X(3).

At the item selection screen, Hold R + L, press UP, Square(2), LEFT, Square(2), DOWN, Square(2), RIGHT, Square(2), UP, Square(2), LEFT, Square(2).