The royal flush is rankest highest because it is harder to make than any other straight flush, while a straight flush is harder to make than four of a kind, which is harder to make than a full house, which is harder to make than a flush, which is harder to make than a straight, which is harder to make than three of a kind, which is harder to make than two pair, which is harder to make than a single pair. Poker hands are ranked according to their respective rarity.
Recognize which poker games are better for making a royal flush.
