What is the Royal Slot event?

Royal Slot is a time-limited event that will give you an opportunity to win prizes by spinning the machine In hopes that the three prizes will come out identical to one another. 
The icons can be the prizes Puzzle pack, Bonus cash, gems, etc.. or you can see icons for the Mini Jackpoct\ Big Jackpot\ Grand jeckpot. If you get 3 Grand Jackpot icons, you will win the Grand Jackpot!