I am reminded of the game "Yahtzee" which has no direct conflict between players; you just try to maximize your score and whoever scores highest wins. I agree that a game like this has less potential for cutthroat play than other games.

But still, one can imagine Sirlin playing Yahtzee with a child at a family event and the child (who is way behind in points) makes a poor decision about which dice to re-roll. Would Sirlin let the child take back his choice?