Please note that the content of this book primarily consists of articles
available from Wikipedia or other free sources online. The game is
played on a rectangular field of grass or green artificial turf, with a
goal in the middle of each of the short ends. The object of the game is
to score by driving the ball into the opposing goal. In general play,
the goalkeepers are the only players allowed to touch the ball with
their hands or arms, while the field players typically use their feet to
kick the ball into position, occasionally using their torso or head to
intercept a ball in midair. The team that scores the most goals by the
end of the match wins. If the score is tied at the end of the game,
either a draw is declared or the game goes into extra time and/or a
penalty shootout, depending on the format of the competition.
