This is the most niche of niche things so I doubt MMO Champion really knows this genre of gaming exists. To describe what a VN is: they are hentai (animated pornography) games that require little to no interaction from the player. You just read them along like novels and generally only have the choice of choosing dialogue options (think dating sim). Due to this, most gamers aware of the genres existence refuse to classify them as video games. Recently at least one VN (999) has gotten attention in the West and it's not a sex simulator. It was critically acclaimed and recently got a sequel that was also praised. They are, however, praised for their storytelling and atmosphere among fans.
Have you played one or more? Discuss. I never have so I'm curious.