Hmmm... I just want to point this out... GTA 1 had 3 cities, Vice City, Liberty, and san andrease, they where all in 1 install ment of a engine, and the last one (SA) had 3 citites, could it be possible, GTAIV will start in a WAY WAY WAY more complex version of Los Santos, the next one, complex SF, and Complex Las Venturas. The only problem with that is for gtaIV, Las venturas would have to be 3 cities... But in reality, I think it could be multily cities, big cities that are known like, chicago, salt lake city, atlanta ga, Washington DC, ect. Washington DC would be great, now that I think of it... Trying to sneak into the white house.. Great!