Final Fantasy is a Japanese-style top-down fantasy RPG with turn-based combat. The game's story focuses on four heroes whose parents were killed during the invasion of the army of the Palamecia Empire. Three of the four main characters join the rebellion against the empire, completing various missions and trying to rescue key members of the resistance. After defeating the empire and the Emperor, the trio discovers that the fourth hero, now a dark knight, has taken the place of the former emperor and is preparing to attack the rebels. You have to muster your will and stop your former comrade.