Item description:

saves just before final bosses of each castlevania games (except for castlevania adventure you re directly in the fight).

what you have to do is launch any castlevania games, go to the menu and load the save stat, (you appear in the room just before the final boss).

you can use savewizard cheats to refill your life, change your weapons etc....you can use savewizard cheats to change the caracter on castlevania 3 for differents endings ( apply the cheat, load the save and use caracter change before fighting or the cheats doesn't apply).
I know there are codes to go to the last level but not for all games.