In badminton tournaments, a rally point scoring system is used. This means that points can be scored by either the serving or receiving side, regardless of who served the last point. The matches are played to the best of three games, with each game played to 21 points. If the score reaches 20-20, a player must win by 2 points to claim the game. This scoring system adds excitement and competitiveness, as every rally becomes crucial for victory.