The classic card game of rummy has an online version called Rummy 777 51 Bonus. It has a special bonus feature along with a standard 52-card deck. In order to gain extra points or rewards, players must form certain card combinations, whichstts king are referenced in the game's name. Like in classic rummy, the main goal is still the same: players must form sets and sequences of cards in order to win. Players in this variant of rummy need to strike a balance between creating regular rummy combinations and attempting to form the unique 777 51 Bonus combinations, which adds another level of strategy to the game. Because of the game's added complexity & possibility for higher rewards, rummy enthusiasts find it appealing.