In the slot machine game in Iceland, you can use as many polar bears as you want, in fact, the more you find, the better. This is because they act as wild games, as long as they are part of the winning combination, they bring the x3 multiplier. Seeing that the field already has its multiplier, the spoils of your snow journey can become very large.
All of these icing-on cherries are the fact that free games can be reactivated, meaning that wildlife can continue to replicate themselves on other reels. Oh, happy days.