Castlevania Rebirth released the 6th for Wiiware. Also known as Castlevania: Adventure released for the Game Back in 1989. You can pick it up for 1000 Wii Points.
In Castlevania ReBirth, Dracula is back from the dead with his legion of vampires causing disorder in the realms of Transylvania. Players assume the role of Christopher Belmont, the latest vampire slaying hero from the Belmont Clan that is tasked to restore order to the universe before Dracula and his foes take over. Equipped with the legendary whip, players must locate upgradable weapons and holy water to fend off vampires and reach Dracula’s layer in order to dethrone him once and for all.