The following are known GameShark Codes for I-Ninja on Sony Playstation 2 (PS2).

• Master Code – Must Be On
  9450B2E8 B3E61F72
• Infinite Health
  24D2F368 24B4455C
  24D2F368 24B4457C
• Infinite Coinage
  2400B878 BC3405FE
• Infinite Continues
  2400B978 BC34055E
• Infinite Ninja Stars
  2400B878 BC3405DE
• Infinite Hi-Explosive Darts
  2400BB78 BC34054E
• Have a Massive Score
  2403F9C6 FC254C4E
• Have Massive Kill Count
  2400BB78 BC3405EE
• Have All Grades
  2480B068 343445EC
• Unlock All Rage Abilities
  2411F368 343405CC
• Always Have All Rage Abilities
  249AA3E8 7424457