ファイナルファンタジーXIII
"Final Fantasy XIII" began development in February 2004. It began as a title for the PlayStation 2 under the codename "Colors World", however it was moved onto PlayStation3 after the positively received Crystal Tools engine demo in 2005 and the delayed release of "Final Fantasy XII". The original titles in the series were "Final Fantasy XIII" and "Versus XIII". "Agito XIII" was conceived later, when Tabata was looking for a new project after finishing "". Originally titled "Fabula Nova Crystallis Final Fantasy XIII", the three titles were announced at E3 2006 "Final Fantasy XIII" and "Versus XIII" were intended to form the core of the series, with future games being a "facet" of "Final Fantasy XIII". "Agito XIII" and "Versus XIII" both began production in 2006. The subseries' title changed in 2011 when the "XIII" numeral was dropped as it "would have been an issue".