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Mermaid's Diamond Slot Review

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Mermaid's Diamond Slot is a Play’n Go slot launched in 2017. The game houses 5 reels and 720 paylines with a 96.50% RTP. This non-progressive slot game also features mobile, scatter symbols, wilds, bonus games, free spins. This game has a jackpot of 500,000 and is available for playing on both desktop & mobile.



Mermaid’s Diamond is an underwater adventure brought to you by Play’n GO. The video slot uses a diamond-shaped reel set with 5 reels and a 3x4x5x4x3 row structure. While exploring the depths of the ocean, you can create winning combinations in a staggering 720 ways, left to right and right to left. The slot inspired by the underwater world features a beautiful purple-haired mermaid who keeps her diamonds in a treasure chest you have to unlock in order to win bigger payouts.

The graphics are well rendered and accompanied with fluid animations and a bit dramatic soundtrack. The reels are set against a vibrant animated background representing the bottom of the ocean inhabited by various species. A variety of underwater creatures also populate the reels along with gems in different colours. The game benefits from a rewarding free spins feature and Wilds added to the reels during both the base and bonus game. Players can win as much as $500,000.

mermaid's diamond Media Gallery


To win higher payouts, you will have to collect identical gemstones with the Mermaid’s diamond awarding the top prize. Other gems come in red, blue and green colour. Low-value symbols are also theme-related so you will see stingrays, sea stars, squids and seashells on your reels. The gorgeous mermaid stands for Wild which can appear in a stack to replace all regular symbols and complete your winning combinations. The only symbol that cannot be replaced is the treasure chest representing Scatter.

Mermaid’s Diamond is played at a 5-reel diamond-shaped layout and offers 720 ways to win. You will win as long as you land at least 3 identical symbols on adjacent reels starting from the leftmost or the rightmost position. There are no coin denominations or bet levels to choose from. All you have to do to set your stake is to pick one of the bet values offered.

It can be anywhere from $0.20 to $100 per spin. The Autoplay option is also available allowing you to activate up to 50 uninterrupted spins. When activating automatic spins, you will be also offered to set the win and loss limits. This is a useful feature allowing you to manage your bankroll.


Wilds are everywhere in Mermaid’s Diamond. During the base game, you can benefit from the Trident Wilds feature. It is activated at random and adds Wild symbols to 1 or 2 reels thus boosting your winning chances. You will need 5 Scatters depicted as treasure chests to trigger the free spins feature.

If 4 treasure chests occur on the reels on a non-winning spin, the Divine Intervention feature is triggered and the fifth Scatter will appear on the reels miraculously. When the free spins feature is triggered, you will be prompted to unlock one of 5 treasure chests to reveal the number of free spins you will get. Up to 25 free spins can be unlocked, but the fun doesn’t end here.

During free games, each diamond appearing on the reels is collected. When you fill the meter with 5 diamonds, at least one of the reels will be covered with a stack of Wilds completing multiple winning combinations at once. Landing 3, 4 or 5 Scatters on the reels during free games grant additional 3, 4 or 5 free rounds respectively.


The top paying symbol is the diamond which pays 10x your stake for a five of a kind combination. Thanks to the game’s structure and additional Wilds added to the reels you can win up to 5,000x your total stake in a single spin. Mermaid’s Diamond is a medium variance game with the RTP of 96.50%.

what we like

  • Graphically advanced slot
  • Frequent payouts
  • 720 ways to win, pays both ways
  • Highly rewarding free games
  • Extra Wilds

what we don’t like

  • 5 Scatters needed to unlock the free spins feature
  • No multipliers


There is a range of iconic slot machines themed on the hidden underwater beauties and Mermaid’s Diamond has qualified to be one of them. Its innovative structure that allows players to create winning combinations in 720 ways left to right and vice versa grants payouts on a regular basis.

This game is a perfect fit for beginners as the betting range starts from only $0.20 and wins keep coming. However, they will not be that high. For higher payouts you will have to trigger the free spins feature during which you will benefit from stacked Wilds completing multiple winning combinations at once.


Mermaid's Diamond Slot total score:

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Game developed by:

Release year:2017

Available on:Desktop, Mobile

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