User blog comment:DeltaWolf247/GTA V Map Confirmed/@comment-4095569-20130910220149/@comment-4140661-20130912181839

here's the thing, when they say bigger than GTA IV, RDR and San Andreas combined with room to spare, they don't only mean just the city and areas like that but the underwater areas, interiors, mountian tops and how high the map is too. so take all that into account. Yest the island itself will be massive but there are other areas added to it that make it even bigger.