Each Mayan city had slightly different traditions and rituals. However, the Great Mayan Ball Game was never played for entertainment, but always for ceremony and ritual. In the city of Coba, the ball game was played as a prayer for fertility. At the end of the game, there was a bloodletting as an offering to the gods. Based on the carvings on the walls of the ball court, it is believed that the king would pass a staff through his masculine organ for this sacrifice.