The Book of Santa game is a 10-line, 5-reel, and 3-row online slot which was released right for the most magical time of the year. You will find yourself in the middle of the living room, sitting in front of the cozy fireplace and enjoying the view of the colorful merry symbols delicately dancing on the reels. Christmas is a special time of the year and you will have a great chance to experience the magic of this slot game for yourself. The generous Santa Claus will be featured with presents and the book, where he keeps the record of who was a good kid this year. He will also be spinning on the reels together with Star and Bell-shaped symbols to add to the festive look and the feel of the warm game by Endorphina. As for the mathematics, you are waiting for three symbols of the book to land on the reels and open the free games feature for you since the symbol acts as a scatter. At the beginning of the feature, a special expanding symbol will be randomly selected. During the free games and after the payout of regular symbols, the special expanding symbol may expand to cover 3 positions on the reel it landed on. The expanding is triggered only if enough symbols for a win are present. The expanded symbols pay on non-adjacent positions and only on enabled pay-lines. Free games can be won again during the feature.