Wild Cards is a series of science fiction superhero shared universe anthologies, mosaic novels, and solo novels written by a collection of authors known as the Wild Cards Trust and edited by George R. R. Martin and Melinda M. Snodgrass. Set largely during an alternate history of post-World War II United States, the series follows humans who contracted the Wild Card virus, an alien virus that rewrites DNA and mutates survivors; those who acquire minor or crippling physical conditions are known as Jokers, and those who acquire superhuman abilities are known as Aces.