The City in the Mirage is an adventure scenario for Exiled in Eris by Christian Conkle. This scenario is designed for a party of four to six adventurers of first or second level. The characters are hired by a noted scholar to accompany him on an expedition into the heart of Eris to find and explore what he believes to be a lost Aeonian city, rendered invisible by some powerful artifact. The story then follows the journey over the desert by airship, a visit to the small Erisian town of Sweetwater, a perilous overland trek, a surprise ambush in the middle of the night, and the exploration of the ancient ruins of the invisible city and the dangers lurking therein.