Both novice and expert players should become familiar with the mechanics of this feature since improper use can have a major negative influence on a player's performance in thepci slots game. How to Use the 51 Bonus Feature. When a player successfully creates a combination that scores 51 points or more, this feature activates. Several card combinations, such as sets of three or more cards of the same rank or sequences of three or more consecutive cards of the same suit, can accomplish this. A New Degree of Strategy and Excitement.