Many standalone downloads in fact come with the publisher app store. Thay must runs in order to start the game. The end result is the same. And the store will update the game anyways, often re-downloading the equivalent of half the game (we are talking 50GB scale here).
Sometimes you can use another publisher app store. Which will in fact start another app store upon starting the game. In turn starting the game. And the game itself will also ask you for a game studio account. So you need 2 app store and 3 account to play the game. And I am talking about single player game here.
Sometimes you can use another publisher app store. Which will in fact start another app store upon starting the game. In turn starting the game. And the game itself will also ask you for a game studio account. So you need 2 app store and 3 account to play the game. And I am talking about single player game here.