Ok I havent read this complete topic so ya. In GameInformer It reads With no standard CIA support network,it's up to Michael to follow leads ,talk to his contancts and foind out how to clear his name. The way this plays out conceptually is like Assassin's Creed (in STRUCTURE not mechanics) <-- notice that same STRUCTURE as Assassins Creed as in Open worlded sandbox style or however you want to call it. In the game it talks about side quests/missions which leads me to believe that is a open world game. Also, it says you can have numerous missions going on in diffrent cities which means you can travel to any of those at any time you want so you dont have to complete one mission to get to another neccesarily.It even says you have safehouses in every city... remind you of any game that has the abbreviation GTA. in my opinion they would make a open world game because we want an open world game I think most people would prefer an open world game over a straight forward mission to mission to another mission with save and checkpoints.