Well, yes, they do, for instance later Civilizations even provide multiple kinds of conditions for winning the game ! (Though in most playthroughs, the game wil

Well, yes, they do, for instance later Civilizations even provide multiple kinds of conditions for winning the game ! (Though in most playthroughs, the game will be clearly won or lost way before the endgame, especially in SP you often just declare the game 'won' because it's clear nobody will be able to catch up any more, and "shooting fish in a barrel" is only fun the first few times.) Sandbox doesn't mean no end goal(s), though you typically get the option to continue playing past the end goal(s).