Watch Dogs: Legion is an action-adventure game played from a third-person perspective. The game is set within an open world, fictionalised representation of near future London, which will encompass notable landmarks, boroughs, and cultural styles of the city. The game's setting takes place within a London that has become a surveillance state. Personal liberties have been vastly limited, and citizens are constantly monitored in their activities by Albion, a private security company that acts as the city's law enforcement. The player will have the ability to navigate the city either by foot, using vehicles, or fast-travelling via the city's Underground stations. Unlike the previous games in the series which focused on the use of a single protagonist to drive the story's narrative, Legion features the ability to control multiple characters within the game's setting. Each of these characters can be recruited through a unique mission, though this depends on their standing with DedSec; for example, a character who the hacker group helps out will be in favour of aiding them when asked and completing their recruitment mission, whereas a character whose family member was accidentally killed by a DedSec member will not tolerate the group and likely refuse to join.
