Multiplayer Experience
With the recent success of so many multiplayer/social games and the emergence of the gamification of services it’s worth thinking about what makes multiplayer gaming so powerful. Games can be applied to anything and in many ways humans often make games where none existed just due to our amazing pattern recognizing abilities. Games and play are an old form of communication almost certainly pre-writing, possibly even pre-language, one could hypothesize that games themselves might be one of the oldest forms of cultural communication (especially when you see animals learning through play).