The background consists of the coral, and they are in HD. As far as the theme is concerned, it doesn’t come as a surprise that the game has been set underwater – deep at the Mariana trench.Even though frequent payouts doesn’t necessarily mean better payouts, the 96.12% RTP means that you’ll be playing a game that pays out more often than the substitutes.Plenty of paylines mean that your chances of landing frequent wins are guaranteed, and it could eventually boost your bankroll. The game comes with 5-reels and 50-paylines, which comfortably puts it in front of all the other games with the fishing theme.We have a lowdown on this game, explaining to you what you should expect when you choose to play it! While some players might argue that this game is just overrated because it has been developed by Microgaming, we’d like to object this and say its massive winning opportunities, crisp graphics, cool animations, and straightforward gameplay is what makes it stand out from the rest. Various online free video slots that feature the underwater theme, yet very few can be compared with Microgaming’s Dolphin Quest video slot. The Best Free to Play Fish Slots Online Dolphin Quest Slot Machine