Well, Rockstar. They sort of invented it, no? The point of a Rockstar game tends to be you living and surviving in a big city. The place is pretty much the most important thing in a Rockstar game, but in a Bethsesda games, the place is not as important as the story or characters, the place just provides somewhere for the people to be.
The genre of a Rockstar open world game is an open world sandbox. The genre of an open world Bethesda game, more often than not, is an RPG that happens to have an open world.
The genre of a Rockstar open world game is an open world sandbox. The genre of an open world Bethesda game, more often than not, is an RPG that happens to have an open world.