While each game has a distinct story, they are all set within the same world: an Earth of the future which has evolved a dystopian cyberpunk society. In this setting, several organizations compete for overall control of the world. Several of the societies mentioned or shown are inspired by real-world and invented secret societies and conspiracy theories. The one constant through the series is the Illuminati, although FEMA, Majestic 12, and the Knights Templar are also featured. The main characters in the series possess artificially acquired superhuman abilities, referred to as "Augmentation".