Chicago's all-seeing central operating system is a powerful surveillance tool, and vigilante Aiden Pearce makes it work on his behalf in this E3 trailer for the game.
Using just his smartphone Pearce tracks and takes down human traffickers, and also eludes the police, thanks to his hack of the city's powerful network infrastructure.
For more on the game and protagonist Aiden Pearce, take a look at this previous preview speaking with the artist who brought him to life. We should also hear more about the game at Ubisoft's press conference later today at 5 central time.
Watch Dogs hits the Xbox 360, PC, PlayStation 3, and Wii U on November 19, and Xbox One and PlayStation 4 versions are also in the works.