Xmas Magic online slot machine from Play’n GO features a Gamble Round. This is an optional opportunity you can use to multiply your prize from inside the main game. If you can predict what color one of the cards is before it is revealed, you will be able to double your current win total. Keep in mind that there is a one-in-two chance that you will get it right and a winning probability of 50% as it's going to be either red or black. However, if you want to make this more challenging, you can try to predict what suit the card will be once it is revealed. This will give you a 25% winning probability as there will only be four different suits it could be: diamonds, hearts, clubs, or spades. You can play the Gamble Round up to five times in a row, but it will only allow you to win a total of 2,500 coins.