Trails, known as Kiseki (軌跡) in Japan, is a series of science fantasy role-playing video games by Nihon Falcom. It is a part of their larger The Legend of Heroes franchise and began with the release of Trails in the Sky in 2004. Set on the continent of Zemuria, Trails features a large cast of characters and consists of several games split into the Trails in the Sky, Crossbell, Trails of Cold Steel, and Kuro no Kiseki story arcs. The series was conceived as a goal by Falcom to create the most ambitious story in video games, with company president Toshihiro Kondo considering it to be his life's work.