Getsu Fūma Den (月風魔伝?, lit. "The Legend of Getsu Fūma") is a side-scrolling action-adventure game for the Family Computer by Konami, released in 1987 available exclusively in Japan. While Getsu Fūma Den never had a sequel, it has been referenced in many subsequent Konami titles throughout the years. The game is structurally similar to Castlevania II: Simon's Quest and The Goonies II.

Golgo 13 (ゴルゴ13, Gorugo Sātīn?) is a manga series written and illustrated by Takao Saito, published in Shogakukan's Big Comic magazine since October 1968. In 1975, the manga won the 21st Shogakukan Manga Award for general manga. The series follows the titular character, a professional assassin for hire. Golgo 13 is the oldest manga still in publication, and its tankōbon edition has the third highest number of volumes. It has sold over 200 million copies in various formats, including compilation books, making it the third best-selling manga series in history. It has been adapted into two live-action feature films, two animated films, a television series and five video games.