Games are transmitted from generation to generation. The favorite game of a person could be easily observed back in parents and grandparents behavior and forward in children and grandchildren behavior. So it is possible to investigate backward the history of a game up to the distance of 100 years and forward to make a forecast for the next 50 years. Games can weaken or change in time. It seems that there is a tendency of joining together for people playing the same or complementary games. “Learning” consists mainly on teaching what games ought to be played. Different cultures and different social classes prefer to play different types of games. Different tribes and families choose different modifications of the games.
