Recently, Danny Belanger, who is the lead game designer on Watch Dogs, talked about whether or not Ubisoft had to make any sacrifices when it came to the next-gen versions of Watch Dogs, due to current-gen systems, and he mentioned that the water in the game isn't possible on the PS3 and Xbox 360.
"It's not concessions, we're trying to do the exact same game. There are some differences though, obviously with more power, you can have a deeper simulation. A game like ours is great for that, being systemic with more and more cars, more variety in the people, more people, a stronger simulation.
"The water is definitely something that is not possible on current-gen, so that will be a difference, but for the rest it's the same experience, it's the same mechanics," Belanger said.
Source: Examiner
