Video Games Encyclopedia

A visual novel (ビジュアルノベル, bijuaru noberu) is a hybrid of text and graphical adventure games, typically featuring text-based story and interactivity aided by static or sprite-based visuals. They resemble mixed-media novels or tableau vivant stage plays. Most visual novels typically feature dialogue trees, branching storylines, and multiple endings. The format has its primary origins in Japanese and other Asian video game markets, typically for personal computers and more recently on handheld consoles or mobile devices. The format did not gain much traction in Western markets, but started gaining more success since the late 2000s.

Reference: Wikipedia