Watch Dogs (stylized as WATCH_DOGS) is an open world action-adventure stealth video game developed by Ubisoft Montreal and published by Ubisoft. It was released on 27 May 2014 for Microsoft Windows, the PlayStation 3, PlayStation 4, Xbox 360 and Xbox One, with a Wii U version planned for release in the fourth quarter of 2014.

Set within a fictionalized version of Chicago, Illinois, the single-player story follows a hacker and his efforts to seek revenge after the accidental death of his niece. The open world design lets players freely roam Chicago, which includes the urban city, open countryside, and slums.

The game is played from a third-person perspective and its world is navigated on-foot or by vehicle. Players control Aiden Pearce, a highly skilled grey hat hacker who can hack into the CTOS, a centralized system which manages the hyper-connected city of Chicago.