Star Ocean: Blue Sphere is a Role-Playing game, developed by Tri-Ace and published by Enix Corporation, which was released in Japan in 2001. The original game has never been released outside of Japan. On 8th June 2009, a remake was released for mobile phones but so far, only a Japanese version has been released. The text is colloquial with an emphasis on "sci-fi" jargon.
Blue Sphere attempts to adapt traditional Star Ocean gameplay to the Game Boy Color. For the first time, random battles are removed and enemy characters can be seen on the field. When engaged in combat, the screen changes to a side scrolling view and retains real time combat. The characters can only move left and right, and the majority of fighting is influenced through combos. Battle techniques and magic can be assigned to button combinations, making the battle system more similar to Star Ocean's cousin series, Tales.