Koji Igarashi, longtime producer of the Castlevania series, is generally the person most of us associate with establishing the exploration-driven formula of Konami's vampire-slaying franchise. The rhythm of the series – uncovering a vast world map as you slowly acquire new abilities to traverse it – has become so iconic that players created a word for its signature style: Metroidvania.
The portmanteau reveals Castlevania's similarities to Metroid, Nintendo's beloved sci-fi series, though Igarashi said during a GDC panel that the inspiration for Castlevania's now traditional formula was from another Nintendo series: Zelda.
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Metroidvania panel w/ Koji Igarashi (GDC 2014)
"We really wanted to extend the life of the game," said Igarashi, "and the one game that popped up in our heads was Legend of Zelda, an exploration-filled action game. Pretty much our entire team, including myself, were huge fans of the game, and we wanted to make something very similar. So now you know the origin of inspiration actually wasn't Metroid."
Even so, Igarashi is happy that his Castlevania games are associated with Metroid, although he didn't actually learn of the term "Metroidvania" until around two years ago, when he noticed fans posting about it on Facebook. "I like the name and I respect it," said Igarashi, "and I like the meaning behind it. It fits very well, so I'm actually kind of honored that Metroid, the name, is attached to Castlevania, and that it morphed into this one word, so I like it very much."
Of course, back in the late 1990s when Igarashi and his team were creating Castlevania: Symphony of the Night – the game that established today's familiar formula – the term Metroidvania didn't exist. So, what did they call it? As Igarashi told us during the Q&A session, it wasn't very flashy. "We didn't really have a code name for it. It was very basic and plain and we just called it '2D exploration action game.' There was really nothing special about it, so there you go."
Another panel attendee asked about Symphony of the Night's famous inverted castle, and what inspired its creation. As it turns out, said Igarashi, it was just easier than creating new monsters and assets.