There are basically two ways to make a slot series. You can pile on new installments that are similar, but with different tweaks and additions per installment, or you can make many different versions of the same game. The Coins series from Wazdan does a bit of both.
This particular game is the Xmas edition.
The layout looks visually appealing, with classy gold and red wine colour dominating the graphics. However, you’ll spot many empty reels without any symbol. The only symbol you’ll often spot is a gold coin with numbers, making the gameplay unique yet easy to understand. The 15 Coins Xmas slot also offers five fixed jackpots and various features to add more flair and fun.
While spinning the 5x3 greed available in 15 Coins Xmas, you’re trying to trigger the Hold the Jackpot bonus game. You are getting blank positions for the most part, with various bonus symbols landing as well. To trigger the feature, it’s required that you cover the entire middle row with bonus symbols (5 in total).
You can sometimes get Cash Infinity symbols at random, and these become sticky in their current positions until the next bonus game. It goes away only once the bonus ends. If it lands on the middle row, it stays there and makes it easier to trigger the feature.
If Hold the Jackpot triggers, you will get through 3 re-spins, and you will find that the number resets whenever new bonus symbols land. The aim is to fill all positions; each bonus symbol pays up to 5x, while Infinity symbols go up to 10x. There are jackpot symbols that can also land, and if bonus symbols cover all 15 positions.
Collector symbols can land and accumulate Cash Infinity and cash symbols. They also add a random multiplier of between 1x and 20x.
Mystery symbols can transform themselves into other bonus icons, apart from the Cash Infinity symbols. There are jackpot mystery icons that can become one of the three jackpot symbols. These mystery symbols and the jackpot mystery symbols open up to reveal your fate at the end of the bonus game.