Final Fantasy is a Japanese anthology science fantasy media franchise. Final Fantasy installments are generally stand-alone stories or role playing games, each with different settings, plots and main characters, but the franchise is linked by several recurring elements, including game mechanics and recurring character names. Each plot centers on a particular group of heroes who are battling a great evil, but also explores the characters' internal struggles and relationships. Character names are frequently derived from the history, languages, pop culture, and mythologies of cultures worldwide. The mechanics of each game involve similar battle systems and maps.