To double up you winnings hit the "gamble" or "double" button! Such sum is achieved with the showcase of 5 substitute cards on a single winline. If you choose the 9 lines with the biggest bet you play 900 credits forevery spin. The feature can be played six times in a row, or stopped at any moment. For activation, cards dont need to be on winline; they pay regardless of the position. But there is more to make you happy: these spins come with a 3 times multiplier! Dolphins Pearl Deluxe Slot Playing Practices. The game features regular playing card symbols from 9 to Ace with the higher paying symbols represented by fish including tropical fish, a seahorse, a flatfish and a lobster. Max lines number is 9 and the minimum number. The underwater and sea themes are the mainstream choices in the world of casino gambling. Play ON mobile (Free / html5 / No Download / No Install).