That is why many casinos even offer rewards for such a hand (from the little gifts to the monetary reward). Often, it is called 'royal' because such combination is the rarest one and it is difficult to hit it. In this type of game, the royal flush that is completed without jokers is called a “natural” royal flush. In the games with jokers, the hand that consists of 4 cards of the same rank and the joker can be beaten only by the royal flush without joker. This combination consists of all suited cards, such as A-K-Q-J-T without jokers. This is the strongest one of all poker combinations.
Royal flush is the greatest possible straight flush with an ace high.
