it is the third and final game in the primary Xenosaga trilogy. Also sprach Zarathustra, literally "Thus spoke Zarathustra", is also the title of Friedrich Nietzsche's most famous work, which introduced the concept of the Ubermensch and popularized the phrase "God is dead". The game was released on PlayStation 2 on July 6, 2006 in Japan and on August 29, 2006 in North America.