Unlock Extra Lives
Go to Area 5-3 and you will find a 1UP on the 3rd floor of the tower. Go down the ladder to the 2nd floor and then back up again to the 3rd floor and the 1UP will have returned. Do this as many times as you want.
If you need more help, we've got more Ninja Gaiden cheats and also check out all of the answers for this game
Comments for this cheat