Most prolific action-adventure videogame series

The prolific action-adventure videogame series is Castlevania, with 32 games as of 22 August 2013. Some of these games are platform-based, but can also be listed as action-adventure games. Full list by game/platform/year:

Castlevania (Various, 1986)

Vampire Killer (MSX2, 1986)

Castlevania II: Simon's Quest (Various, 1987)

Haunted Castle (Arcade, 1988)

Castlevania: The Adventure (Game Boy, 1989)

Castlevania III: Dracula's Curse (Famicom, 1989)

Castlevania II: Belmont's Revenge (Game Boy, 1991)

Super Castlevania IV (SNES, 1991)

Akumaj? Dracula (X68000, 1993)

Akumajo Dracula X: Chi no Rondo (PC Engine, 1993)

Castlevania: Bloodlines (Genesis, 1994)

Castlevania: Dracula X (SNES, 1995)

Castlevania: Symphony of the Night (PlayStation, 1997)

Castlevania Legends (Game Boy, 1997)

Castlevania (N64, 1999)

Castlevania: Legacy of Darkness (N64, 1999)

Castlevania: Circle of the Moon (GBA, 2001)

Castlevania Chronicles (Various, 2001)

Castlevania: Harmony of Dissonance (GBA, 2002)

Castlevania: Aria of Sorrow (GBA, 2003)

Castlevania: Lament of Innocence (PS2, 2003)

Castlevania: Dawn of Sorrow (DS, 2005)

Castlevania: Curse of Darkness (PS2/Xbox, 2005)

Castlevania: Portrait of Ruin (DS, 2006)

Castlevania: Order of Shadows (Mobile, 2007)

Castlevania: The Dracula X Chronicles (PSP, 2007)

Castlevania: Order of Ecclesia (DS, 2008)

Castlevania: The Arcade (arcade, 2009)

Castlevania: The Adventure Rebirth (WiiWare, 2009)

Castlevania: Harmony of Despair (Various, 2010)

Castlevania: Lords of Shadow (Various, 2010)

Castlevania: Lords of Shadow – Mirror Fate (Various, 2013)