Hyperdimension Neptunia is a video game series developed by Idea Factory and Compile Heart that features a wide array of fictional characters originally created by Naoko Mizuno and designed by Tsunako and Minamitsu. The original game centers around Neptune, one of four goddesses who adventures in a world where she can recruit other characters to form a party. Some of the supporting characters are playable depending on the title and also whether it is a remake or an option as downloadable content. Some characters also start as antagonists, and there are a regular set of villains. Most characters are based on and named after the video game consoles, video game developer companies or publishers.[1][2] The characters have been commented on by game reviewers who had mixed feelings about their designs, personalities and voice acting.