Tic-tac-toe is a Human game, in which two players try to fill three boxes with either an X, or an O, in a row (vertically, diagonally, or horizontally.)
In 2374, when Harry Kim referred to kal-toh as "Vulcan chess", Tuvok commented that, "Kal-toh is to chess as chess is to tic tac toe." (VOY: "Alter Ego")