It's a fantastic game, considering it's for mobile. I Do not understand all those who give 1 star to a game like that... In the end reading the reasons are only 2: The game does not part (excuse me but if it says that with your devices do not part you are stupid that you buy the same); And you pay more for the expansions... This is true but in the end for such a game I would be willing to pay even a little more.
About The fact that it is not free to explore as the console, I think it's almost impossible to do... It would be too big and expensive; Also because in the missions a beautiful part of the city already you can explore freely.
The only flaw, is true, too few missions, I hope that with future updates can stretch a lot!
Don't listen to the frustrated nerds who always want to ruin things, Ubisoft has done almost a perfect job! Thanks a lot, I've been waiting for a while!