Castlevania Retrospective Part I: Road Into Darkness
Covers the first 3 Castlevania games on the NES, as well as Vampire Killer, and Haunted Castle.
Castlevania Retrospective Part II: Resurrection of Evil
Highlights Super Castlevania IV, Rondo of Blood, Dracula X, Dracula X Chronicles, and Symphony of the Night.
Castlevania Retrospective Part III: Realm of Horror
Covers Castlevania 64, Legacy of Darkness, Resurrection, Lament of Innocence, and Curse of Darkness.
Castlevania Retrospective Part IV: Procession of Portability
Highlights all of the Castlevania hand held games released on Nintendo.
The Game Boy, Game Boy Advance, and DS, each of those systems having 3 titles.
Castlevania Retrospective Part V: Konami's Curse
The final video in the Castlevania Retrospective Series covers the historic Castlevania timeline which began with Leon Belmont, and ended with Soma Cruz. It also discusses how Lords of Shadow appears to have started a new timeline.