Lots has been made of the fact that there are seven stories in The Cave in combination with its three-character party. To quote Justin McElroy's review, "That's bad twice, but the third run through is just drudgery."
But is one of the stories just not really worth seeing? Would that solve the "third playthrough" problem? I haven't played the game, and I'd appreciate no spoilers, but whether the answer is "yes" or "no," this'll probably be the thing that pushes me to buy the game.