Check out this amazing open world gameplay of Watch_Dogs.
"Discover in this open world gameplay video one among many ways to hack the city of Chicago as Aiden Pearce in Watch_Dogs. In a world led by technology, hacking is our weapon."
The video is from Playstation Meeting where the PS4 was announced but PS4 development hardware is still new and third parties would not have had time to move their existing projects onto the system. So Watch Dogs display at the PlayStation Meeting were running on PC instead.
Yep, you read it right! PS4 games displayed at the event were running on PCs...