Mermaids Treasure Trove at a glance
Mermaid's Treasure Trove takes you to the seabed in October 2025. On the 7x7 grid, clusters of 5 to 15 or more symbols pay up to 150x.
- Provider
- Pragmatic Play
- Released
- October 2025
- Grid
- 7 × 7
- Ways to win
- Cluster pays (from 5 symbols)
- RTP
- 96.54%
- Volatility
- very high
- Max win
- 10,000x
- Hit rate
- 26.76%
- Bonus buy
- no
Rules: how Mermaids Treasure Trove works
The Mermaids Treasure Trove grid has 7 × 7 positions. Wins come from clusters: groups of at least 5 matching symbols touching horizontally or vertically. Diagonal neighbours do not count.
After every win the winning symbols disappear and new ones drop in from above (tumble or cascade). A single spin can therefore trigger several wins in a row until no new combination forms.
The return to player (RTP) of the standard version is 96.54%. That is an average over a very large number of spins, not a promise for a single session. Casinos may run versions with a lower RTP; the in-game info menu shows the value that applies.
The maximum win is capped at 10,000x your stake. At €1 per spin that would be €10,000; if a bonus reaches the cap, the round ends automatically.
Free spins, features and bonus round
Paying symbols can randomly carry a multiplier between 5x and 100x. After every win without a wild, a wild multiplier appears that starts at 1x and rises by +1x each time it is part of a win; several wilds in the same win are added. Three to seven scatters award 10 to 18 free spins in which the wild multipliers stay until the end.
Scatter symbols trigger the free spins. How many scatters you need and how many spins you get is shown in the paytable; in most games of this kind the free spins can be retriggered during the bonus.
Multipliers boost wins in this game many times over. What matters is whether they apply to a single win only or add up during the free spins: that difference is exactly what makes the bonus round so swingy.
Play the Mermaids Treasure Trove demo for free
Play-money version straight from the provider. No account, no deposit. 18+ only.
The demo runs with play money directly on Pragmatic Play's server. It is the easiest way to get to know the grid, the features and the swings before real money is involved. The demo window only loads after you click, so the page stays fast.
Mermaids Treasure Trove with the BlazeBet bonus: wagering and a worked example
At BlazeBet, slots count 100% towards the welcome bonus wagering (100% up to €1,000, 15x wagering, 30 days). Mermaids Treasure Trove is therefore suitable for clearing the bonus.
A worked example with real numbers: with a €100 bonus and 15x wagering on the bonus, you need to wager €1,500. At €0.50 per spin, that is 3,000 spins. With an RTP of 96.54%, the theoretical loss over that stretch is about €51.90. If BlazeBet counts deposit plus bonus, the total wager and the expected loss double.
With very high volatility, the balance can run out before the free spins arrive. A smaller stake per spin stretches the budget over more rounds.
Volatility, hit rate and budget
According to published game data, about 26.76% of spins end in a win, so on average every 3.7th spin. Many of those hits are smaller than the stake, though.
As a rough rule of thumb for a game with very high volatility: plan a budget for about 400 spins, which at €0.50 per spin is €200. That gives you a reasonable chance of seeing the bonus round. Set a limit and a time frame beforehand, and do not raise your stake to chase losses.
A cluster slot where the wilds become more valuable as the round goes on.
More from Pragmatic Play and similar games
Mermaids Treasure Trove is part of the Pragmatic Play portfolio. If you are looking for a similar experience, try Oracle of Gold, Book of Monsters and Sugar Rush. All slots are listed in our slot overview, games with real dealers in the live casino section. How wagering, deadlines and game contributions work for the welcome bonus is explained on the bonus page.
