Lunar (Japanese: ルナ, Hepburn: Runa) is a series of role-playing video games, developed by Game Arts in Japan and published in the United States by Working Designs, Ubisoft, and Xseed Games. The original releases of The Silver Star and Eternal Blue were published for the Sega CD. The Silver Star was critically acclaimed and was the top selling game in Japanese Mega CD history. Both games were later remade for the Japanese Sega Saturn with considerable story, graphical, and musical changes. These remakes were later ported to the PlayStation in Japan and North America. The first game was also ported to the Microsoft Windows computer platform in Japan and Korea, and was later remade for the Game Boy Advance and PlayStation Portable in Japan and North America.