It's entirely in Japanese, but if you're a true Star Ocean fan you shouldn't mind at all and be able to make your way through the game.
Let's hope for a Western release someday!
Star Ocean: Blue Sphere is a Game Boy Color game that can be played here for free on playretrogames.online using your web browser. It was added on 31/10/2018 and has been played 158 times.
play star ocean blue sphere online