You have to complete all the missions first, then you can roam everywhere in the city. if you are not completed all the missions, you cannot roam or move out from the mission area otherwise mission will get failed. You can also roam in the world of godfather game, only a limited number of vehicles available but not enough like GTA 5, GTA 4 PC games. The godfather is an older PC game so many things are not like modern games.
All the functions of GTA 3 games are not similar to this game. The Godfather Game is open-world games like GTA games, The Godfather is a 2006 open world action-adventure video game developed by EA Redwood Shores and published by Electronic Arts. The Godfather 1 Free Download PC Game Cracked in Direct Link.
