Castlevania's Greatest Era. The Rating Game.

[Smeags]

Have to go with the 2000's, where Koji Igarashi fine tuned his methods into an art form.

Circle of the Moon (2001)
Harmony of Dissonance (2002)
Aria of Sorrow (2003)
Dawn of Sorrow (2005)
Portrait of Ruin (2006)
Order of Ecclesia (2008)