No, not in the main game.
However online you can download the "Team Safe" mode, which enables you to roam locations from the campaign at your will.
If you are looking for a completely free roam adventure/action/shooter game, then try Fallout 3 and Elder Scrolls V: Skyrim.
No.
Not necessarily free roam. Its hopping from planet to planet, with somewhat of a linear structure.
Yes
No, When you complete both Fallout 3 or Fallout New Vegas you are not able to free roam the wasteland.
Story uncharted 3 Online uncharted 2
no you cannot
you have to buy an online pass on the playstation store
Yes!It does have free roam.
You can not free roam on the sims 2. Well you have to be on a lot like a house or some kind of property but you may roam on the sims 3 where ever you want unlike the sims 2.
You have to complete season first then you will unlock it
uncharted 3
Uncharted 3: Drake's Deception