After completing Situation 1, enter the following codes at the Title Screen. (Note: To unlock Situation 9, Situation 8 must first be unlocked. To unlock Situation 10, Situation 9 must first be unlocked.)

right, down, up, left, circle, X, R, L - Unlocks Situation 10

L, R, left, right, square, circle, X, triangle - Unlocks Situation 8

triangle, down, circle, left, X, up, square, right - Unlocks Situation 9