(taken from Wikipedia) "Star Ocean (スターオーシャン Sutā Ōshan?) is a franchise of action role-playing video games developed by the Japanese company tri-Ace and published and owned by Square Enix (originally Enix).
As fans of science fiction and space travel, the developers at tri-Ace created the Star Ocean series with a sci-fi setting in mind and have cited Star Trek as one of their main influences for the visuals of the games as well as being an underlying, but noticeable, influence to the series as a whole. While the first Star Ocean game included more fantasy elements to appeal to a broad audience, subsequent installments naturally moved towards a more sci-fi oriented feel, with Star Ocean: Till the End of Time described by its producer Yoshinori Yamagishi as tri-Ace's "ultimate vision" of the "whole Star Ocean world". The large gap of time between Star Ocean: The Second Story and Till the End of Time, in terms of in-universe chronology, can be explained by the series' choice to emphasize the setting of its fictional world rather than focus on its characters."

There are five games in the series: Star Ocean; Star Ocean: The Second Story; Star Ocean: Blue Sphere; Star Ocean: Till the End of Time; and Star Ocean: The Last Hope. There's also been a manga and anime adaption of The Second Story.

I've only played Till the End of Time and The Last Hope, but I'm rather fond of both. What do you all think?

Till the end of TIme was pretty good.
I didn't really liked The Last Hope though.

Oh and the 5th one, Integrity and Faithlessness is going to be out the 31st of March in Japan and somewhere in 2016 for the rest of the world!