Awesome Live Desktop Wallpaper: “Metro Exodus Rat Mutant Attack”. Metro Exodus is a first-person shooter video game developed by 4A Games and published by Deep Silver. It is the third installment in the Metro video game series based on Dmitry Glukhovsky’s novels. It follows the events of Metro 2033 and Metro: Last Light. The game received generally positive reviews from critics. Download this awesome wallpaper for free.