All that is required is a movement with the finger. We connect with friends. We buy the latest gadgets. We find out whats going on in the world. But with the same simple finger movement, we cast an ever-increasing shadow. With each connection, we leave a digital trace that records everything we do and everything we like and dislike. And its not just people. Today, all major cities are networked. Infrastructures are monitored and controlled by complex operating systems. In Watch_Dogs, this system is called the Central Operating System (ctOS) - and it controls almost all parts of the citys technology and contains important information about all the citys citizens.

You play Aiden Piece, an ingenious hacker and former criminal whose criminal past has led to a violent family tragedy. You are now on the hunt for those who have hit your family, and you can monitor and hack everyone around you by manipulating everything connected to the city network. You can access the security cameras that are everywhere, download personal information to track a target, control traffic lights and public transportation to stop your enemies and much more. Use the whole of Chicago as your ultimate weapon and choose for yourself how you want to carry out your revenge.