Princess Lover! is a Japanese visual novel, and it is the first title developed by Ricotta. It was first released as an adult game for the PC on June 27, 2008 in both limited and regular editions, and it will be followed by an all-ages release for the PlayStation 2, scheduled for Winter 2009. The gameplay in Princess Lover! follows a linear plot line which offers pre-determined scenarios and courses of interaction, and its story focuses on the appeal of the four female main characters.

Princess Lover! has received several transitions to other media. The game was first adapted into three light novels written by Utsusemi and illustrated by Hyūma Kitsuhi. It was then followed by two manga adaptations: the first, illustrated by Naoha Yuigi, began serialization in Media Factory's Media Factory Mobile! service on March 20, 2009; and the second, illustrated by Yū Midorigi, began its serialization in the manga magazine Comic Valkyrie in July 27, 2009. An anime adaptation produced by the animation studio GoHands also began its broadcast in Japan on July 5, 2009, and it was later followed by other networks in the same month. An Internet radio show has also been produced to promote the anime adaptation, and began its broadcast on July 3, 2009.

Source: Wikipedia