Phantasy Star IV (also known as Phantasy Star: The End of the Millennium) returns the saga to Algo and reveals the aftermath of Phantasy Star II's events on the system. Originally billed as the last game in Phantasy Star saga, Phantasy Star IV was the final chapter of the fight against Algo's darkest evils.
PSIV has also been known by the subtitles "The Final Terror" and "The Return of Alis."