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Mermaid’s Treasure Trove Slot

3.9 / 5
Author: Olamidotun Otis
5 min read clock
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“In an ocean full of fish, be a mermaid.” That should be your anchor as you dive underwater in Pragmatic Play’s Mermaid Treasure Trove. Hitting online casinos on October 2, 2025, an elegant mermaid is the star of this cluster pays slot, unfolding on 7 reels. It features wild symbols with increasing multipliers that become sticky during free spins. The top reward for this highly volatile adventure is 10,000x your bet. See how it all comes together in my Mermaid’s Treasure Trove review.
Provider

Provider

Pragmatic Play
Type of Slot

Type of Slot

Slots
Theme

Theme

Underwater, Mermaids
Reels

Reels

7
Paylines

Paylines

Cluster Pays
Stakes Range

Stakes Range

0.2 – 240
Bonus Features

Bonus Features

3
Free Spins

Free Spins

10–18
Multiplier

Multiplier

1x–100x
Max Win

Max Win

10,000x
RTP

RTP

96.54%
Volatility

Volatility

High
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Mermaid’s Treasure Trove Demo

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Mermaid’s Treasure Trove Slot RTP, Details & Wager Limits

Mermaid’s Treasure Trove slot game is a cluster pays slot with a solid 7×7 grid. Winnings are created by connecting 5 or more matching symbols vertically or horizontally. Every win triggers a cascading sequence, where winning symbols are removed from the reels and replaced with new ones—just like in Megaways slots.

Stake levels range from 20p to £240 per spin, around the usual bracket in Pragmatic Play slots. Use the + and – to adjust your stake at Mermaid’s Treasure Trove casinos. As the standard with new online slots, the game comes with autoplay and turbo options for non-UK players.

The default Mermaid’s Treasure Trove RTP is 96.54%, but 95.56% and 94.54% variants are also available at UK online casinos. So comb through the best sites to find the best-paying version. With the game’s high volatility, you might drown a bit before hitting big payouts.

The whirlpool delivers some promise, with the Mermaid’s Treasure Trove max win set at 10,000x the bet. This translates to a £2,400,000 potential win, rivaling some progressive slots. Aim to stack up multipliers to edge closer to the top prize.

Mermaid’s Treasure Trove Theme—The Mermaid Holds the Keys To Treasures

Will Pragmatic Play ever grow tired of underwater? Well… maybe when the oceans dry. This time, we find ourselves in an ancient city buried deep beneath the sea (Atlantis comes to mind), ruled by an elegant mermaid. The provider clearly draws inspiration from beloved folktales, like The Little Mermaid, and the execution is spot on.

The mermaid is the game’s centerpiece. She wears a crown and floats next to the grid with her scaly tail and upper human body. Corals, swimming fish, and other underwater cliches complete the setting.

I like the calm audio, featuring soft string chords and the sound of water bubbles. It ramps up as you grow into the game, yet still maintains its mystical feel.

See what the paytable looks like:

SymbolPayouts/Info
mermaids treasure trove shell symbol Shell5 to 15 = 0.2 to 20x the stake
mermaids treasure trove star fish symbol Star Fish5 to 15 = 0.25 to 40x the stake
mermaids treasure trove fish symbol Fish5 to 15 = 0.3 to 60x the stake
mermaids treasure trove horn symbol Horn5 to 15 = 0.35 to 80x the stake
mermaids treasure trove harp symbol Harp5 to 15 = 0.5 to 90x the stake
mermaids treasure trove chest of coins symbol Chest of Coins5 to 15 = 0.6 to 100x the stake
mermaids treasure trove crown symbol Crown5 to 15 = 0.75 to 150x the stake
mermaids treasure trove scatter symbol ScatterTriggers Free Spins
mermaids treasure trove wild symbol WildSubstitutes for all symbols except Scatter

Mermaid’s Treasure Trove Mobile Slot

The Mermaid’s Treasure Trove slot design looks clean at mobile casinos. In fact, playing in portrait mode gives you a better view of the ruins underwater, and the animations hold up well. However, there’s a trade-off; the mermaid now perches on the grid, losing her upright stance.

I also had a good time playing the Mermaid’s Treasure Trove demo in landscape mode—it really feels like a pocket-sized ocean. Check out the free version right here on this page or in our free online slots catalogue.

Mermaid’s Treasure Trove Bonus Features

The extras here aren’t as packed as you might have expected. The main feature is the Wild Multiplier, which appears in all game modes. There are also bonus buy options.

Multiplier Wilds

If a multiplier wild isn’t part of a win, it will drop into a random vacant position after a cascade. It carries a multiplier value starting with 1x, and each time the wild takes part in a win, it increases by 1x. Then, it moves one position randomly in any direction within the area of the winning cluster.

The multiplier value applies to wins that contain the wild, and if multiple wilds form a cluster, they are first summed up. Even more, paying symbols can also carry multipliers, ranging from 5x to 100x. Whenever a symbol with a multiplier is in a cluster with a wild, their multiplier values are added before being awarded.

On the other hand, if there’s a win containing symbols with multipliers but not wilds, the wild multiplier that spawns on the reel will start from the sum of the multipliers in view. Keep in mind that Multiplier Wilds remain sticky till the end of the tumble sequence.

Furthermore, whenever 2 or more wilds take part in multiple winning combinations on a spin, priority is given to the cluster with the most wilds.

Free Spins

As is the usual format in many online slots, landing 3 or more scatters triggers the free spins round. You’ll get:

During the bonus round, the multiplier wild is locked in position until the end of the round. So, it’s possible to stack up increasing multipliers. Even more interesting, each scatter that appears in the round retriggers an extra spin.

Ante Bet and Bonus Buy (Unavailable in the UK)

With the Ante Bet option, your chances of landing scatters increase by 3x. There are also Bonus Buy options to skip the chase and move directly into the bonus round.

Mermaid’s Treasure Trove Verdict: Decent Visuals but Gameplay Lacks Originality

3.9/5
Mermaid’s Treasure Trove Slot
The Mermaid’s Treasure Trove slot game brings a different look to the classic underwater theme and delivers some decent multipliers. However, if you’re out for a fresh experience, it might not be the perfect pick.
Pros
Pros
Max win of 10,000x the bet is solid
Pros
Sticky wilds with increasing multipliers
Pros
Visuals are good enough
Pros
£240 max bet per spin
Cons
Cons
Bonus features might feel a bit complex for newbies
Cons
Gameplay lacks innovation

An underwater theme by Pragmatic Play might bring flashbacks of the unending Big Bass Bonanza series, but this one is nothing like it. The spotlight here is on a mermaid in all her glory rather than colourful aquatic life. Visually, it looks decent, but I would have liked to see some fresh animations down there.

On the gameplay side, it is solid. I grew fond of the increasing Wild Multipliers on tumbles, particularly in the bonus round, where it becomes sticky on the reels. But honestly, we’ve seen this exact progression countless times, so it’s not anything novel.

Things might get a bit murky when regular symbols carrying multipliers form a cluster win without a Wild Multiplier. The accumulated multipliers in view become the starting value for the Wild Multiplier. Newbies might struggle here, but it’s indeed your best shot at the solid 10,000x the bet max payout.

For more underwater-themed slots, try out Elk Studios’ Fish and Bird. It takes you to shallow water with a lighthearted look and promising bonus features.

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Olamidotun Otis
Olamidotun Otis

338 Articles

Specialising in reviewing online casinos, sportsbooks, and slots, Olamidotun consistently delivers engaging and insightful content. His writing captivates readers, providing a deep understanding of the subject matter. Trusted by enthusiasts and beginners alike, he continually enhances his skills to meet the demands of the evolving online gaming world.

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