Can You Suggest Any Non-Zero Sum Games?

epeus asks: "I have noticed that most games for children (and adults) are Zero-sum by a game theory definition - you have to battle over limited resources either implictly (Chess, Frustration) or explicitly (Monopoly). Modern economic theory (dating back to the Enlightenment) makes it clear that the world is not like that - buying and selling creates value; confiscation destroys it. The 'Gift Culture' notion of Open Source described by ESR takes this a stage further. Can Slashdot readers suggest Non-Zero Sum games for children and adults to help break this mentality? The only ones I can think of are Victorian parlour games like Charades or Ghosts, where the point of the game is playing, not scoring it." I too think that there are times when we may focus too much on competition when we might be better off with entertainment. Don't get me wrong, there is a satisfying feeling to compete and win (or even to compete), but sometimes just the act of playing should be rewarding in and of itself. As always, feel free to share your thoughts on the subject.