system
Given the following post, respond as if you're commenting on Reddit:
human
[Grand Theft Auto] So what are all the cities/towns we know about?

There's Los Santos, San Fierro, Las Venturas, Liberty City, Vice City.

There's also Fort Zancudo, Fort Carson, there's Whetstone, and Blueberry

But what else is out there in the United Archipelago of America?
gpt
Worth noting that there are three distinct universes in the GTA world - the 2D universe, which is just GTA 1, GTA 2, and the GTA London duology (1961/1969); the 3D universe, which is the GTA III/Vice City/San Andreas/Liberty City Stories/Vice City Stories games as well as GTA Advance; and the HD universe, which is GTA IV and its expansions, GTA Chinatown Wars, and GTA V. Not all locations are consistent throughout the different universes.

All three universes also reference real-world cities, and in fact the 2D universe GTA London titles take place in, well, London, as well as Manchester. Plenty of other real-world locations are mentioned in most of the titles.

Bullworth from *Bully* and Carcer City and Cottonmouth, Florida from the *Manhunt* series are also present, with the latter being in both the 3D and HD universes.

So as to main locations, we've got the obvious ones you already covered - San Andreas was a city by itself in the 2D universe, and split into the tri-city complex of Los Santos, San Fierro, and Las Venturas in the 3D universe, and further separated in the HD universe as both San Fierro and Las Venturas have been mentioned but not seen as of yet. In the 2D universe, there were also the smaller towns of Palomino Creek, Montgomery, Dillimore, Blueberry, Angel Pine, El Quebrados, Bayside, Las Barrancas, Fort Carson, Las Payasadas, Valle Ocultado, and two ghost towns: Aldea Malvada and Las Brujas. In the 3D universe these locations are absent, but instead we see Chumash, Paleto Bay, and Sandy Shores.

Liberty City appeared all the way back in GTA 1, where it was joined by New Guernsey's Guernsey City, Fort Law, Schlechberg, Hackenslash, and Eaglewood, but in the HD universe there's no references to New Guernsey, instead we see Alderney and the Carraways.

We also know of the town of Ludendorff, in North Yankton thanks to GTA V, and "Capital City," though we don't know if it's supposed to be a replacement for Washington DC or for Albany, New York.

Despite what many think, however - the Red Dead Redemption titles are not part of the greater Rockstar/GTA universes, except possibly as fictional stories.