XIII is a First Person Shooter where you play as «Thirteen», a talented soldier who lost his memory and has been accused of killing the President of the United States. You first wake up injured and amnesic on Brighton Beach with the only clue being a small key and a mysterious tattoo « XIII » next to your clavicle. It’s now your job to search for answers through a 34 levels solo campaign. Don’t worry, you will find the appropriate weapon arsenal along the way. With questions not missing, neither are the bullets!