Final Fantasy is a popular and historically important Japanese role-playing game series produced by SquareEnix. It has sold over 85 million copies and helped establish video games as an artistic medium. Key elements that recur throughout the series include magic, summons, the Chocobo bird, and Moogles. Final Fantasy X was a major transition to 3D graphics and the first game in the series to feature fully voiced characters. The story focuses on a group's quest to defeat the rampaging monster Sin.