Frank Miller's 1988 miniseries 300 earned critical acclaim, inspired a blockbuster film and its less well-received follow-up, selling tens of thousands of copies along the way. A comic book prequel, described as "a sweeping tale with gods and warriors," has been teased by the artist since at least 2009, and at last it appears ready for release.

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Entertainment Weekly reports that Xerxes: The Fall of the House of Darius and the Rise of Alexander will be published in 2018 by Dark Horse. The website also debuted the first official art from the comic.

The comic focuses on "the Persian emperor Xerxes, the so-called 'King of Kings' who raised a massive army to invade Greece in the fifth century B.C. to get revenge for his father’s death and become a god." The title also suggests an exploration of the ascent of Alexander the Great, who led the Greek conquest of Persia nearly 150 years after the Battle of Thermopylae.

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Miller has talked about a prequel series called Xerxes since 2009, and later elaborated on his plans to cover the Battle at Marathon among other historical events. An augmented version of this came with the 2014 film 300: Rise of an Empire.