The average player will take between 35 and 40 hours to finish Watch_Dogs, creative director Jonathan Morin has said.
This number includes a “bit” of free roam, but speeding through the game doesn’t tap even half of the total content. Players wanting to fully explore Watch_Dogs can expect a total of 100 hours of play, Morin said.
I would say the average player which does free roam a bit tend to reach the end within 35-40h. But doing everything is close 100h.
In a second tweet, he noted that the 100 hour number doesn’t factor in online.
And these don’t really consider online stuff in the mix…
Watch_Dogs will release May 27 on Xbox 360, Xbox One, PS3, PS4 and PC. A Wii U port has been confirmed, but currently it has no release date.