The ruins of Coba have at least two very pretty ball courts, one of which has been partially excavated very recently. The ball game played an important roll in Mayan society and most cities had a ball court, which is basically a corridor of two stoned walls. The game was played between two teams, using only their hips and elbows to get a rubber ball through a hoop. Inscriptions and other pieces of art show that human sacrifice was a part of the game. There are different theories as to who actually got sacrificed - the captain or the whole team? Did the losing team have to pay with their lives, or did the winning team willingly and proudly go to live with their Gods? You will hear different stories on this theory. It's also possible that traditions changed during the thousands of years that the Mayan civilization was around.