Now it is time to explore the feature that unlocks the true potential of this online slot, and that is the free spins feature.īefore the free spins begin, you have to choose one of the five animals seen in the slot. You can imagine the potential that the Butterfly Boost feature has because it will boost your winnings significantly. When this feature is activated, the butterflies will fly around and expand 1 to 3 symbols that are part of a winning combination. This feature is activated at random when you have got a win, and there are no Scatters symbols or symbols marked by butterflies. The next exciting feature is the Butterfly Boost feature. This feature is called Symbol Expansion, and it can be seen during the free spins as well. If that symbol is part of a winning combination, it will expand to cover the entire reel. They can mark a particular symbol on the reels. The butterflies that you see in the slot aren’t there just for show. Let us first discuss the bonus features seen in the base slot, and then we will focus on the free spins.