Star Ocean: Blue Sphere (スターオーシャン ブルースフィア, Sutā Ōshan Burū Sufia) is a 2001 Game Boy Color action role-playing video game that is the direct sequel to Star Ocean: The Second Story. It is the only game in the Star Ocean series that has never been released outside of Japan. The text is colloquial with an emphasis on "sci-fi" jargon. A mobile phone remake of the game was released in Japan on June 8, 2009.