A team must not have more than six players on the ice while play is in progress. Typically, those players are: one goaltender, two defensemen, two wings and one center. A lesser amount of players can be on the ice as a result of penalties; a goaltender can be replaced by a skater during a delayed penalty or at any other time of the game, at a team's own risk.
A regular game consists of three 20-minute periods with 15-minute intermission after the first and second periods. Teams change ends for each period. If any game is tied at the end of regulation time, a five-minute (preliminary-round games), ten-minute (playoff-round games) or twenty-minute (gold-medal game) sudden-death overtime period will be played with teams of four skaters and one goalkeeper each.
If no goal is scored in overtime, the game will be decided by a shootout. Three players of each team shoot alternately until a decisive goal is scored. The remaining shots will not be taken. If the result is still tied after 3 shots by each team the procedure shall continue with a tie-break shoot-out by one player of each team, with the same or new players with the other team starting to take the tie-break shots. The same player can also be used for each shot by a team in the tie-break shoot-out. The game is finished as soon as a duel of two players brings the decisive result.