One question that could be asked of Assassins Creed and Watch Dogs, which both share some extensive and new technology, is that are they part of the same universe that Ubisoft has created.
By extensive and new technology I mean that in Assassins Creed there is of course the Animus which takes our main character, Desmond Miles into a virtually created past and we have the CtOS (The Central Operating System) in Watch Dogs which controls the entire city of Chicago. While these two pieces of technology are unrelated they are still futuristic.
The Animus is said to have been created in the later half of the 20th century while the CtOS in Watch Dogs is used in the present, 2013, therefore a shared universe is a possibility since dates and times do not collide.
Another piece of information that supports this theory is from an interview with Ubisoft Game Director, Ashraf Ismail in which he is asked whether Assassins Creed and Watch Dogs share the same universe, to which he replies “I don’t wanna ruin the surprise for people, I don’t want to give anything away, but for the people who love both games, for the people who will play both games there are some easter eggs” and apparently these easter eggs will “blow your mind”.
You can watch the full interview below (he talks about the easter eggs at 4:02)