Free slot demo · independent review
Mermaid’s Treasure Trove
Mermaid’s Treasure Trove pays clusters on a 7×7 tumble board. A Wild created by a win grows by +1x whenever it helps another cascade, and Free Spins make those Wild values sticky for the entire round.
18+ · free play · no account or deposit
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60-second guide
What matters before you play
Free play
Try Mermaid’s Treasure Trove for free
Use the demo to see whether the pace and bonus features suit you. It opens here and costs nothing.

No sign-up · no deposit · full screen available
Use the demo well
Three things to watch
- Require the Wild to join the next win
A multiplier increases only when its Wild participates in another paying tumble. A high value sitting beside unrelated symbols contributes nothing to that cascade.
- Read attached symbol boosts separately
Paying icons may carry random 2x–100x multipliers of their own. Distinguish that one-off value from the board position occupied by a growing Wild.
- Map sticky positions during Free Spins
Feature Wild multipliers remain between turns. Note whether new symbol drops continue connecting to those fixed locations rather than watching the total meter alone.
Our take
A spacious cluster slot where the most valuable object may be a Wild with somewhere useful to connect
Mermaid's Treasure Trove fills a 7×7 board and pays groups of matching symbols, then removes successful icons for another tumble. A winning combination can produce a multiplier Wild. If that Wild participates in a later paying cluster, its value increases by +1x and can continue growing through the same sequence. Paying symbols may also arrive with attached multipliers between 2x and 100x, creating sharp one-spin boosts alongside the position-based Wild development. Three to seven scatters award ten to eighteen Free Spins. The important upgrade is persistence: Wild multipliers remain in their positions throughout the feature, allowing future spins to reconnect with values built earlier. The potential is attractive, but a fixed Wild is only as useful as the symbols landing around it. A large multiplier stranded at the edge may contribute less than a smaller central Wild that repeatedly joins clusters. Very high volatility and a 10,000x maximum reflect that dependence on both value and location. Use the demo to trace one Wild from creation through each successful connection. Keep attached symbol multipliers separate, because they do not represent the same persistent resource. During Free Spins, mark the board positions that have become anchors and judge how often replacement symbols reach them. This produces a much more honest read than celebrating the largest number visible. The game fits players who enjoy board state carrying across cascades and who are comfortable interpreting cluster geometry. Those who prefer a single global multiplier may find several local values difficult to follow, especially on forty-nine positions. Its strongest quality is that progress stays visible; its main risk is assuming visible progress will necessarily find another win.
How it plays
What happens when you spin
Tumbles create opportunities, winning clusters can leave local multiplier Wilds, and the bonus makes those local values persistent without guaranteeing they will connect again.
Seven-by-seven cluster payments
Groups of matching symbols pay wherever they touch on the large grid, disappear and allow new icons to tumble into the empty positions.
Winning groups can create Wilds
A successful cluster may leave a multiplier Wild behind, giving the next tumble a fixed substitution point with an attached value.
Useful Wilds grow one step
Whenever an existing multiplier Wild belongs to another paying cluster, its value rises by one before the next replacement symbols arrive.
Free Spins preserve Wild positions
Ten to eighteen awarded spins keep multiplier Wilds on the board between turns, while normal tumbles and attached symbol boosts continue.
The position-first rule
Connection frequency matters before multiplier size
Read a Wild by the number of neighbouring symbols that can realistically form a cluster around it. A modest central value with repeated access can drive more paid tumbles than a dramatic edge multiplier that never reconnects.
Inside the game
See Mermaid’s Treasure Trove in action
Full, uncropped game views selected to show the reels, controls and features in context.
Is it for you?
Does Mermaid’s Treasure Trove match your style?
Use these points to decide whether the game's pace and features match what you enjoy.
You may like it if...
- Cluster-pays and tumble fans
- Players who enjoy persistent board state
- High-volatility local multiplier growth
It may not suit you if...
- Forty-nine cells can feel visually busy
- Large Wild values may become stranded
- Attached boosts and Wilds use separate rules
Compare your options
What should you try next?
Choose by the way the game plays, not just by theme or maximum win.
Want multiplying Wilds that transform from gold?
Oracle Of Gold Oracle creates 2x–3x Wilds from winning golden symbols and multiplies several in one cluster; Mermaid grows each useful Wild by repeated participation.
Prefer an expanding tumble grid?
Anaconda Gold Anaconda Gold opens more positions and raises a shared sequence value, while Mermaid's Treasure Trove keeps a fixed 7×7 field and position-specific Wilds.
Quick answers
Mermaid’s Treasure Trove FAQ
Game settings can vary between casinos. Check the information screen in the version you are playing.
How do Wild multipliers grow?
A multiplier Wild increases by +1x whenever it participates in another winning cluster during the continuing tumble sequence.
Are Wilds sticky in Free Spins?
Yes. Multiplier Wilds remain on the 7×7 board throughout the feature, giving later turns chances to reconnect with them.
Can I play Mermaid's Treasure Trove free?
Yes. Its official virtual-credit demo runs within this page, including the complete board and player controls without an external redirect.
Game facts
Mermaid’s Treasure Trove numbers and features
These are the game settings we could confirm. A casino may use a different version, so check the in-game information before playing for money.
Payouts & risk
- RTP
- 96.54%
- Volatility
- Very-High
- Maximum win
- 10,000×
- Bet range
- 0.2 – £2
Reels & wins
- Reel layout
- 7×7
- Payout system
- Cluster Pays
Bonus features
- Features
- Sticky growing multiplier Wilds
- Free spins
- Yes
- Bonus buy
- Yes
- Jackpot
- No
Release & devices
- Release date
- 24 Sept 2025
- Platforms
- Desktop, Mobile
- Theme
- Treasure, Sea
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