A hockey game is composed of three different periods. Each of these periods last for 20 minutes and have a 15-minute intermission between each one.
Each of the periods contain the plays that are necessary for one of the teams to win the game. These plays may involve breaks in the timer and may cause each of the periods to take longer than the period is truly meant to last. During each of the three periods, the teams will switch ends. The side that the team starts and ends on is the same, and it is predetermined before the game.
When the game is over, if there is no winner due to a draw in the game, players will be able to go into a sudden victory round. The length of time of this round is dependent on the type of hockey that is being played, but can last between 5 and 15 minutes. When there is a tie at the end of a sudden victory, players will participate in a penalty shoot out. The game winning penalty shoot will determine which team is the winner in the event that there is a tie after sudden victory periods.