Ninja: Shadow of Darkness Invincibility
Pause the game, then press L2, R2, L2, L2, L2, R2, R2, R2, Circle, Triangle, Square, Circle, Triangle, Square. If done correctly, you'll hear a chime. When you unpause the game, you'll now be a skeleton. To revert back to a ninja, just pause the re-enter the code above.
Level Select
Remove your memory card before you turn on your PlayStation. When it says "Checking Memory Card", quickly press L2, L2, L2, R2, R2, R2. If done correctly, the words "DELS LEVEL CHEAT ON" will appear on screen. Now start a new game to access the level select menu.
All Weapons
During gameplay, press R2, R2, R2, L2, L2, L2, R2, R2, R2, L2, L2, L2, L2, L2, L2. This will give you a weapon, just repeat to get all the weapons.
Baby Mode
At the Title screen, when Press Start is flashing, press L2, L2, L2, Select, Select, Select, R2, R2, R2.
Big Head Mode
At the Title screen, when Press Start is flashing, press Select, Select, Select, L2, L2, L2, Select, Select, Select.
Weaker Boss
Pause gameplay during a fight with a Boss and press L2, L2, L2, R2, R2, R2, Triangle(6x).
Big Heads, Hands, Feet
At the Title screen, when Press Start flashes, press Select, Select, Select, L2, L2, L2, Select, Select, Select.
Big Heads, Hands, Feet, Invincibility
Pause gameplay and press L2, R2, L2, L2, L2, R2, R2, R2, Circle, Triangle, Square, Circle, Triangle, Square. Pause gameplay again and select Quit Game. At the Title screen, when Press Start flashes, press Select, Select, Select, L2, L2, L2, Select, Select, Select.
