Prince of Persia: The Lost Crown's tale of monsters, mythology, and Immortals left one conspicuous thread unresolved: the fate of the mysterious masked Immortal, Radjen. When the Mask of Darkness DLC launches on September 17, players can discover a new chapter of Sargon's story as they confront the myriad dangers of Radjen's Mind Palace. But the new DLC is much more than a story expansion, opening up a whole new biome filled with fresh traversal elements, traps, enemies, and more.