Mermaid’s Diamond Slots Online

Mermaid’s Diamond Slots Online
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Slot Type:
video slot
5,000 x stake
Slot features:
Free Spins, Wilds, Scatter


The Mermaid’s Diamond 720-ways-to-win (both ways) slot is a first of this kind from Play’n GO. It has an underwater theme with the mermaid as the main Wild Symbol. Two wilds, the standard and trident, divine intervention, and free spins feature ensure an entertaining gaming experience.

What Does Mermaid’s Diamond Slot Offer?

Play’n GO has dared to think out of the box and come out with a never 720 ways to win slot called Mermaid’s Diamond. This one comes with plenty of winning potential. From the name of this title, it is easy to guess that the action takes place underwater and has sea creatures as the symbols.

We found this slot machine to have an attractive underwater world theme that was quite enticing and pleasing to our eyes. This unique looking 5-reel slot has a hexagonal reel set design (3-4-5-4-3) with an outstanding 720 both ways to win option. Therefore, you can see payouts come your way for matching adjacent icons from left to right and from right to left starting from the leftmost or the rightmost reels, respectively.

The Play’n GO Mermaid’s Diamond online slot was released in September 2017 and is the first machine from this game developer to have 720 winning ways. Its RTP is 96%, and it comes with a medium variance. The underwater or seaworld themed video slot has attractive features in the form of random wilds, scatter symbols, additional wilds, and free spins to help improve your winning chances.

Playing Mermaid’s Diamond Slot Game for Real Money

Before you take a deep plunge into the clear ocean to unearth the underwater treasures, you should first choose the wager size. The control menu bar at the bottom of the reels set has all the necessary buttons to choose your bet size and to let the reels spin. The process is as follows:

  • Use the ‘+’ or the ‘–’ option at the centre of the menu bar to increase or decrease the bet size, respectively. (Minimum/maximum bet: 0.20/ 100.00);
  • Hit the big green button with two arrows to start the game in manual mode. You need to hit this button every time to set the reels rolling;
  • If you do not like to play the manual mode, then opt for the Autoplay option. This is the small ‘Play’ button seen next to the big spin option. Press this, choose the number of automatic spins, and reels will roll continuously for the predefined number of times.

Betting Range

The minimum bet you can opt to play safe is just 0.20 per spin. So, this game suits all low-rollers as it has such a low minimum stake. The maximum wager you can place per spin goes all the way up to 100. Hence, even high-rollers looking to risk some money to earn big wins can also play this title from Play’n GO software provider.

Mermaid’s Diamond RTP

One of the most impressive things about this slot machine is that it has an RTP of 96%. According to industry standards, it is ideal for players to try out games with such an RTP. We suggest you have an eye on the volatility of the title as well. This one falls in the medium variance category.

Key Symbols and What They Offer

As the Mermaid’s Diamond slot with 720 winning lines has an underwater adventure theme, all the icons here are related to items seen in the ocean. The low valued symbols are the shells, squids, starfish, and flatfish. The higher paying icons are the precious coloured stones like green, blue, and red gems and the diamond. The most important symbol is the Mermaid wild.


The gorgeous looking Mermaid is the Wild Symbol. When she lands on the reels, she can replace all the other low valued symbols seen on the reels except the scatter icon. When she takes the place of other icons, she can help in creating a new winning combination or participate in long wins.

Free Spins Round

The Treasure Chest icon that is a common part of the underwater themed titles is the Scatter Symbol here. Landing 5 of the treasure chests anywhere on the 720 paylines grid activates the free spins. You can win 25 Free Spins. You should choose any one of the treasure chests to reveal the hidden free spins you have won. Landing 3, 4, or 5 treasure chests during the extra spins can reward you with additional 3, 4, or 5 free rounds, respectively. So, if you are lucky, you can retrigger the extra spins for an infinite number of times. Landing a diamond symbol during the free spins round is a good sign. These diamonds are collected, and once you end up with 5 diamonds, one full reel will be filled by mermaid wilds to offer better wins. Unfortunately, it does not come with any Multiplier option.

Bonus Rounds of Mermaid’s Diamond Free Slot

Trident Wilds

This is a great random bonus round you can find to shoot up randomly during a Mermaid’s Diamond spin. When this happens, a supernatural force in the form of Poseidon will wave his trident to add Wild Symbols on 1st and 2nd reels. This can lead to creating more winning combos. Hence, along with the underwater world theme, there is a bit of Greek mythology theme infused in this game.

Divine Intervention

This is one of the very special bonus rounds on offer where the Poseidon can turn into a saviour for you. Suppose you are left with only 4 treasure chest scatters on the grid. You would feel disappointed that you did not land one more to trigger the free rounds. But, your worries are driven away by Poseidon as he weaves magic and divinely intervenes to generate the 5th treasure chest anywhere on the reels to offer you the free spins.

Payout Table

It is important to know the various combinations that you should land to get a payout before you start to play. Therefore, we suggest you check out the paytable to get a clear idea of the various winning combinations and the important symbols that give maximum rewards. Go through the paytable in-depth so that you can create a strategy to bet safely and also win big. The payouts below are for the bet value of 5.

Symbols 3 of a Kind 4 of a Kind 5 of a Kind
Shell and Squid 0.50 1.25 2.50
Starfish and Flat Fish 0.75 2.00 3.75
Green Stone 1.00 2.50 5.00
Blue Stone 1.50 3.75 7.50
Red Stone 2.50 6.25 12.50
Diamond 5.00 10.00 50.00

First Impression of Mermaid’s Diamond Slot

As soon as the game is launched on your screen, you can see that Play’n GO has given serious thought to creating the underwater theme. It is a visually stunning underwater kingdom that has the rocks and the ocean creatures in the background. The deep blue sea catches the attention of the player instantly and makes you feel as if you are in real deep cool waters. The interactive background adds to the gaming atmosphere where you see the sea plants waving in the water. You also find schools of fish swimming in the background to give it a realistic underwater effect. The unique diamond combination of the paylines also stands out.

The graphics of this slot is top class, and the maker has done full justice to the underwater theme. The symbols used here are akin to the things you find in the sea. They include precious stones and gems, treasure chest, mermaids, shells, starfish, and flatfish, and their images look quite realistic. The 3D animations used are of the top end, and they are in unison with the flow of the water. The sound effects are a bit of a letdown to us. But what can you expect to hear in the deep sea after all?

Tips and Strategies on How to Win the Slot

The internet is flooded with umpteen numbers of tips and guides on how to win playing slots. The following are some of the tips that are worth mentioning and can help you to land some good wins.

  • As usual, we start with the advice to look for online casinos that offer the slot for free. Playing the demo mode a few times before trying it with real money is advisable for all gamers;
  • Look for casinos that offer no deposit spins, free money, or welcome bonus with free spins on this title. By making use of such options, you can see an increase in your bankroll and the chances of winning;
  • Be clear in your mind that you cannot win the maximum jackpot amount by just wagering with the smallest bets. Most of the time, top wins are achieved with the maximum stakes. Plan your bet sizes based on your budget. Try to stretch it as far as possible so that you can play at least 100 spins;
  • The biggest wins in the Mermaid’s Diamond slot can come your way if you play the free spins round. Hence, the focus should be on landing 5 of the scatter treasure chest icons on the reels. If this happens, you get to reveal the free spins by picking any box. There is also the option to retrigger the free spins indefinitely by landing 3 to 5 scatters during the bonus round.

Desktop Version or Mobile Version

There is not going to be a big difference that you can spot when playing the Mermaid’s Diamond on the desktop or mobile devices. Play’n GO knows the importance of offering top titles in the mobile mode. Hence, it uses the latest HTML5 technology to offer a seamless mobile gaming experience of this title for the users on the move. With this technology, the game easily adjusts to any screen size. Also, there is no need to download any software to try it on compatible mobile devices like Android smartphones and tablets as well as iOS devices. Like the desktop version, the game loads directly on the browser.

Mermaid’s Diamond Biggest Jackpot Win

The highest payout comes from special features and free spins. With features like wild, free spins, 720 winning ways, trident wilds, and complete wild reels, there are enough and more opportunities for the player to take home solid payouts. Aim for those to hit the maximum jackpot prize of 100,000 coins.

Final Thoughts

From this Mermaid’s Diamond slot review, we can clearly say that the game is fully compliant with its deep ocean theme. It gives you a feeling as if you are underwater and in the company of sea creatures, precious gems, and fish. This title appeals to the low and the medium rollers due to its medium variance. We suggest that you try this title out in your favourite casino and decide if it is worth your time or not.

Internet Slots FAQ’s

Can I Play Mermaid’s Diamond for Free?

Yes, you can try it in demo mode an unlimited number of times at all Play’n GO powered online casinos.

Should I Download Mermaid’s Diamond to Play?

No, the game supports instant play feature, and hence it opens directly on the web or mobile browsers without the need to download it.

Does Mermaid’s Diamond Real Money Slots Have a Wild Symbol?

Yes, the attractive looking mermaid with the fishtail is the Wild icon.

Can I Use a Bonus to Play Mermaid’s Diamond Slot Machines Online with Real Money?

Yes, there are a few gambling websites that offer you the option to make use of the bonus to try this game in real money mode.

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Nate Dreyer
Nate Dreyer

Nate Dreyer is a lover of online slots that also lives for letterboxing. The author has an unusual hobby of finding letterboxes. Once his signature is on the logbook and the imprint in their journal, he is off to find the next one. Dreyer also loves to experiment in the kitchen as well when preparing meals. He is constantly testing his rad creativity with jigsaw puzzles – the more the pieces, the better. This stimulation keeps him on his toes to come up with some of the work found on our website.