what do these games refer to?
A science fantasy role-playing video game.
Final Fantasy XIII
Final Fantasy XIII is a science fantasy role-playing video game developed and published by Square Enix for the PlayStation 3 and Xbox 360 consoles and later for the Microsoft Windows operating system.
how many final fantasy 13 games are there Thirteen
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Final Fantasy XIII [SEP] Introduction
Final Fantasy XIII is a science fantasy role-playing video game developed and published by Square Enix for the PlayStation 3 and Xbox 360 consoles and later for the Microsoft Windows operating system. Released in Japan in December 2009 and worldwide in March 2010, it is the thirteenth title in the mainline "Final Fantasy" series. The game includes fast-paced combat, a new system for the series for determining which abilities are developed for the characters called "Crystarium", and a customizable "Paradigm" system to control which abilities are used by the characters. "Final Fantasy XIII" includes elements from the previous games in the series, such as summoned monsters, chocobos, and airships.