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- 7x7 grid with Cluster Pays and Tumble wins
- Multiplier Wilds that grow and merge with every win
- Free Spins with sticky multipliers and unlimited retriggers
Underwater enchantment awaits as Pragmatic Play unveils its latest deep-sea adventure: Mermaid’s Treasure Trove. This 7x7 Cluster Pays title officially launches today, the 2nd of October 2025, across the best slot sites in the UK. With a highly playable 20p minimum spin and 10,000 x bet max wins, this dreamy underwater slot is already making waves.

- RTP: 96.54%
- Max Win: 10,000x
- Volatility: Very High
- Stakes: 20p to £5
- Release Date: 2 October 2025
What Makes Mermaid’s Treasure Trove a Catch?
Played on a 7x7 grid, Mermaid’s Treasure Trove a Cluster Pays mechanic, meaning wins are formed by landing 5 or more adjacent matching symbols. Once a win hits, the Tumble mechanic kicks in, clearing winners and allowing new symbols to drop into place for possible follow-up wins.
But what really gives this slot its underwater shimmer is the Multiplier Wild feature. When no Multiplier Wild is part of a win, one appears with a 1x multiplier at a random spot. Every win involving that wild increases its multiplier by +1 and shifts it to another random location. If two or more multiplier wilds join the same cluster, they merge into one, with their multipliers combined. Add to that some base game symbols with multipliers up to 100x, and there’s potential for a real tidal wave of prizes.
The Free Spins feature takes things deeper. You can start with up to 18 free spins, where Multiplier Wilds persist on the grid. Trigger the bonus with a wild, and it comes along for the ride. Better still, every new scatter awards an extra free spin, with no limit on how many you can rack up!
Volatility and Big Win Potential
This slot comes with an RTP of 96.54%, sitting comfortably in the high-return bracket for slot games. The gameplay can swing from serene to wild with the volatility dialled up a notch, but that’s where the excitement lies, especially with 10,000 x bet max win potential lurking beneath the surface.
Where to play Mermaid’s Treasure Trove
Mermaid’s Treasure Trove is now available to play for real money at Neptune Play. Dive in and start spinning today!
New depositing players only. Min. deposit: £10. Max. bonus: £200 + 25 Bonus Spins on Book of Dead. Offer valid on the first deposit. No wagering is required on Bonus Spins. Wagering Required on Bonus Cash: 40x. The match-up bonus that requires a deposit must be wagered 40x.
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Try Mermaid’s Treasure Trove Free
If you’re not ready to dip into your bankroll just yet, test the tides first with the demo slots version. It’s the best way to get a feel for the mechanics and multipliers before you swim in for real.