The Summer Holiday slot game has a total of 12 symbols that are divided into three groups. These groups are determined according to the kind of payouts that these symbols yield. The first group is the Summer Holiday Jackpot symbols, which feature two symbols - the Summer Holiday symbol and the Duck symbol. From what I see is that these two symbols have the highest payouts. I believe it is worth to test your luck here although it is not easy to get the duck symbol as I only manage to obtain it once. Just like what I said The duck wild symbol is the one that will win you the most money. 3, 4 or 5 duck symbols in any spin will not only trigger free spins and a 3x multiplier bonus, but it will also complete any winning combination by substituting for the other symbols. Once you have completed the free spins, you have the option of picking a prize, and could either choose another round of free spins or choose to win a mystery prize, which is a bet multiplier that you can win about 1000 percent which is about 10 X.
Furthermore, this game is a dedicated low roller game, but the most amazing thing is that jackpots are massive as well as the potential prize money in this slot game is very high despite the low wagering amount per spin.