When you buy a video game, chances are you'll play through it once and then never again. When you buy a book, you might read it a second time years later, but you know it'll end the same way it did last time. Board games are different. You never know how they'll end, because that's up to the players. Of course, not all games can hold up to repeated plays. Some of them get old and repetitive. But how much of a problem is this, really?