In Free Spins, you'll notice that there is a Firefly symbol in the background of some symbols. Three or more firefly symbols appearing anywhere on the reel will give you 3 re-trigger free games. All prizes have tripled during the free spin. However, this bonus round is re-triggered. Up to 50,000 times of bets per line
The highest-paid symbol is that the unicorn pays 5,000 coins, as long as you have 5 winning streaks and the winning combination is done in the field. In theory, the maximum win for each rotation of the RTG is 50,000X.