XIII is a
first-person shooter video game developed by
Ubisoft Paris and published by
Ubisoft for most platforms except for the OS X version, which was published by
Feral Interactive. Loosely based on the first five volumes of the 1984
Belgian graphic novel series
XIII the
protagonist Jason Fly (XIII), a confused and
amnesic man who searches for his identity throughout a comic book-style,
cel-shaded world. Found stranded on a beach by a lifeguard, Fly is accused of having killed the
President of the United States. The accusation later transpires as mistaken, as Fly finds himself facing a gang of 20 conspirators ("The XX") who aim to overthrow the government.