Castlevania for the NES was a pretty tough game, but Chorus of Mysteries, a rom hack by optomon and Dr. Mario, makes playing the original seem as easy as cloning a PopCap game (zing!). Never before have medusa heads and jumping situations been combined with such little compassion towards the player. I think save states were created for the sole purpose of getting through this game.
Still, if you’re a Castlevania nut, it’s worth checking out because it’s a pretty full conversion of the first game. Or, you know, buy a whip and check yourself into a Turkish prison. The results will probably be the same.