- Saturn
Debug Mode
Pause gameplay hold L1 R2 and press Up Triangle Down X Left Square Right Circle. Release L1 R2 and press L1 R1 L2 R2. Wait a little then press Start L2 R2.
Slow Motion Mode
First enter the code above Debug Mode and use one of the cheats in the menu. Then pause gameplay and press Select to make the game move frame by frame. You can also control the ninjas during this.
Alternate Ayame Costume
At the Item Selection screen press Left Left Down Down Square Square Triangle Circle. Now select Ayame.
Enable Japanese Voices
Select a character and at the next screen hold L1 and press Left Left Down Down Square Square Triangle Circle.
Two Players
First enter the Debug Mode code above and choose Enemy. Choose any enemy. Then choose Pad2 and run away from P2. When you see a question mark near your life bar run back to P2. Now Player 2 can move the enemy you have selected.
US Version
Level Select
Select a character and at the next screen then hold R2 and press Left Left Down Down Square Square Triangle Square.
Healing
Pause gameplay and press Left Left Down Down Square Square Triangle Square.
All Weapons
At the Item Selection screen press X Triangle Square Triangle Square Circle then release L1 and press L1 again.
Hidden Items
At the Item Selection screen hold R1 and press Left Left Down Down Square Square Triangle Circle.
99 Items Capacity
At the Item Selection screen hold L1 and press Left Left Down Down Square Square Triangle Square.
Increase Items
At the Item Selection screen hold L2 and press Left Left Down Down Square Square Triangle X.
All Missions
At the Item Selection screen hold R2 and press Left Left Down Down Square Square Triangle Square.
Japanese Version
Level Select
At the Stage Select screen hold R2 and press Up Up Down Down Left Right Left Right Square Triangle.
Healing
Pause gameplay and press Up Up Down Down Left Right Left Right Square Triangle.
Bonus Weapons
At the Weapon Selection screen hold R1 or L2 and press Up Up Down Down Left Right Left Right Square Triangle.
Increased Carrying Capacity
At the Weapon Selection screen hold L1 and press Up Up Down Down left Right Left Right Square Triangle.
PAL European Version
Increase Item Capacity
At the Items Selection screen hold L1 and press Square Square Triangle Triangle Right Right Up Down.
Unlock All Hidden Items
At the Items Selection screen hold R1 and press Square Square Triangle Triangle Right Right Up Left.
Increase Item Inventory
At the Items Selection screen hold L2 and press Square Square Triangle Triangle Right Right Up Right.
Restore Health
Pause gameplay and press Square Square Triangle Triangle Right Right Up Left.
Unlock All Levels
At the Mission Selection screen hold R1 and press Square Square Triangle Triangle Right Right Up Right.
Enable Japanese Voice Over
At the Mission Selection screen hold L1 and press Square Square Triangle Triangle Right Right Up Down.
Enable Enemy Layout Selection Screen
At the Mission Selection screen hold L2 and press Square Square Triangle Triangle Right Right Up Left.
Enable Ayame Sexy Armor
Play as Ayame and at the Item Selection screen with armor displayed as an option press Square Square Triangle Triangle Right Right Up Right.
