ファンタシースターシリーズ
is a free-to-play online action role-playing game in the "Phantasy Star" series, developed and published by Sega. It was created as a successor to "Phantasy Star Online" and "Phantasy Star Universe", "Phantasy Star Online 2" features gameplay elements and aesthetics reminiscent of previous "Phantasy Star" games while incorporating a few unique twists on the formula. The first version was released for Windows in Japan in July 2012.