Ninja Gaiden - Game Genie Codes
Infinite lives - SZETPGVG
Start with 9 lives - AAUVLIZE
Start with 6 lives - IAUVLIZA
Start with 1 life - AAUVLIZA
Use windmill throwing-star without losing spiritual strength - AEXVVYIA
Use fire-wheel without losing spiritual strength - AAETUYIA
Use shuriken without losing spiritual strength - AAVTNYLA
Maximum strength regained from restorer - APEIKGTA