300 continues to endure due to its exaggerated, thrilling action, and as a classic tale of a brave protagonist fighting against insurmountable odds. As a heavily fictionalized retelling of the Battle of Thermopylae, 300 sees Leonidas, the King of Sparta, leading an army of 300 Spartans against the Persian tyrant King Xerxes and his army composed of more than 300,000 soldiers. 300 is still widely regarded as one of the best projects in Zack Snyder’s career that was well-suited to his directing and writing styles.