The third part will always stand apart - it marks a turning point in the history of the series. The transition to 3D, a third-person view (although the traditional top-down view is also in place), the appearance of many attributes and little things that GTA is associated with.
The hero is silent, but gaming culture knows enough examples when a silent protagonist becomes a cult character. (“Awake and sing, Mr. Freeman, wake and sing...”)
There is one city, not three, Liberty City, but there is plenty of room to wander around - three islands with a business center, an airport, Chinatown, an industrial zone, a fashionable residential area etc.
Classic.