Net and wall games

Net and wall games are court games where either a net separates the opponents or a wall serves to reflect the ball to the opponent. The object of these games is to hit or throw the ball or bird over the net (direct style) or against the wall (indirect style) back to the opponent. Play typically begins with one side serving the ball/bird by initially tossing or releasing it and then hitting/throwing it over the net or to the wall. This then starts a rally, in which the sides alternate hitting/throwing the ball/bird. Players then score points whenever the opponent fails to return the ball/bird back. The criteria on what is considered a valid return varies between each sport (such as the number of times the ball may be touched or bounced on a player's side before it must go back). Games in this category are non contact sports.