G:Revenge of Shinobi

C:Gives You 99 Lives In The Easy Setting of The Game|090F4:0063|Mr. Book|You must go to the Options screen for the new value to be accepted.
C:Infinite Lives|009E46:6002|Mr. Book|
C:Invulnerable In One Direction|00B4E8:6000|Mr. Book|
C:Invulnerable In The Other Direction|00B57E:6000|Mr. Book|Combined, these two codes give immunity to enemy attack, but not to falling off the screen.
C:Unlimited Normal Shurikens|00B93E:6002|Mr. Book|
C:Unlimited Super Shurikens|00C0E2:4E71|Mr. Book|
C:Infinite Shurukens|FFE13F:0063|Dlong 
C:Infinite Health|FFE13B:0008|Dlong
C:Never-Ending Ikazuchi|FFE147:0004|http://www.phm.lu/Shinobi|Enter that code and nothing will touch you, and your Power Up icons will also last forever. Falling into bottomless chasms will of course kill Shinobi, or lock up the game. Word of warning turn it off in Level 8-2, because it screws up with the maze doors. 