Field of Glory: Empires - Persia 550 - 330 BCE is a DLC for the grand strategy game Field of Glory: Empires. This add-on introduces a new campaign timeline set between 550 and 330 BCE, focusing on the rise of the Persian Empire. Players can guide Cyrus the Great through conflicts with Media, Babylon, and Lydia. The DLC adds regional decisions for all nations, with unique options for Persia, Athens, and Sparta, allowing for actions like federating barbarians, forming colonies, and prospecting for resources. Over 80 "Impediments and Boons" are integrated into regional maps, presenting environmental challenges or benefits that affect gameplay and replayability. Major nations receive special content, including unique events, missions, modifiers, units, and buildings, ensuring distinct playstyles for each.