*Ninja

*Get The Sword

Press Left, Right(x2), Up, X(x2), Square at the main menu.

*Invincibility

While the game is paused press L2, R2, L2(x3), R2(x3), Circle, Triangle, Square, Circle, Triangle, Square. If done correctly the ninja will turn into a skeleton and you will hear a chime.Repeat the code to change back.

*Big Head Mode

As Press Start flashes at the title screen press Select, Select, Select, L2, L2, L2, Select, Select, Select.

*Random Weapon

While the game is paused, press R2(x3), L2(x3), R2(x3),L2(x6).Resume the game and you've got a new weapon.Repeat for multiple weapons.

*Baby Ninja Mode

As start flashes press L2(x3), select(x3),R2(x3).

*Less Boss Energy

While fighting a boss, pause the game and press L2(x3),R2(x3), Triangle(x6) to weaken the bosses energy.