Viking poker is a casino term commonly used in European brick-and-mortar casinos. It refers to a variation of poker known as Caribbean Stud Poker.
It is unknown where the term first originated, but the rules of Viking Poker are identical to that in the game of Caribbean Stud Poker. Therefore, if you’re visiting Europe and you find yourself in a European casino, you won’t have to wonder if Viking Poker is some new poker variation you’ve never heard of.