Ninja Shadow Of Darkness

Get The Sword:
At the main screen press Left, Right, Right, Up, X, X, Square and you should get the sword.

Level Select:
Turn on the game. When the "Checking Memory Card" message appears, press L2, L2, L2, R2, R2, R2. When you start the game a level selection menu will appear.

Decrease boss energy:
Pause the game while fighting against a boss and press L2, L2, L2, R2, R2, R2, Triangle, Triangle, Triangle, Triangle, Triangle, Triangle to dramatically reduce the bosses energy level.

Weapon select:
Pause the game and press R2, R2, R2, L2, L2, L2, R2, R2, R2, L2, L2, L2, L2, L2, L2,. Then, resume the game to have a new weapon. Repeat the code for a different weapon.

Invincibility and items:
Pause the game and press L2, R2, L2, L2, L2, R2, R2, R2, Circle, Triangle, Square, Circle, Triangle, Square. If you entered the code correctly, you will hear a chime and the ninja will turn into a skeleton. Then, you will be invincible with infinite items and lives. Repeat the code to turn back into the ninja while keeping the extra items.

Baby mode:
When "Start" flashes, press L2, L2, L2, Select, Select, Select, R2, R2, R2.

Big head mode:
Press Select, Select, Select, L2, L2, L2, Select, Select, Select when "Press Start" appears.