Mermaids Treasure: Book of Pearls
NucleusDescription
Hold & Win respins and a Book of Pearls that expands one symbol across a full reel during free spins define this Nucleus slot, which pairs [high volatility](/guides/volatility) with a ceiling of 11878.7 times the stake. The undersea title uses 5 reels and 10 paylines.
How to play
The game is played on 5 reels with 10 paylines, so wins come from matching symbols along those fixed lines; the paylines and ways guide explains how that layout works. Wild symbols can expand to cover a whole reel, and the Scatter doubles as a Wild. Landing three or more Scatters starts the free spins, while six or more Bonus symbols open Hold & Win with 3 respins. Anyone who prefers to skip the wait can use the Buy Feature to go straight into either bonus. Autoplay is offered, the slot can be tried in a free demo, and it loads on mobile as well. More games from this studio sit among all Nucleus games.
Theme and symbols
The setting is an undersea treasure hunt filled with mermaids and pearls. The named symbols are Bonus, Scatter, Wild and the Book of Pearls, which gives the slot its subtitle and drives the free spins round.
Features
Hold & Win: six or more Bonus symbols trigger it with 3 respins. Each new Bonus symbol that lands resets the respin count, and Bonus symbols stay stuck in place until the round ends.
Free Spins: three or more Scatters award free spins. During them the Book of Pearls selects a payable symbol, which then expands across a full reel.
Wild Scatter and Expanding Wild: the Scatter also acts as a Wild, and Wild symbols expand to cover a full reel.
Buy Feature: a bonus buy option lets the player choose between Free Spins and Hold & Win. The max win figure of 11878.7 times the stake is the most a single round can reach.
Game facts
| Provider | Nucleus |
|---|---|
| Type | Slot |
| Volatility | High |
| Max win | 11,878.7× bet |
| Features | Wild Symbol, Autoplay, Books |
| Mobile | Yes |
| Free demo | Yes |
Game rules
Mermaids Treasure: Book of Pearls is a slot developed by Nucleus. Rounds are run on Nucleus's servers; JOKR records every bet and result in your account history.
The volatility is high, the maximum win is 11,878.7× the bet.
Bets are placed per spin within the limits shown in the game. Results are produced by the provider's certified random number generator.
Full rules and paytable are available inside the game. General terms for all games are on the Game Rules and Fairness & RNG pages.
Frequently asked questions
What is the maximum win in Mermaids Treasure: Book of Pearls?
The maximum win is 11878.7 times the stake.
How do you trigger Hold & Win?
Six or more Bonus symbols trigger it, starting with 3 respins. Every new Bonus symbol resets the respin count, and the symbols stick in place.
Can you buy the bonus round?
Yes, the Buy Feature lets the player choose between Free Spins and Hold & Win.
Is there a demo and mobile version?
Yes, a free demo is offered and the slot can be played on mobile.
Browse all Nucleus games or every slots title at JOKR Casino. 18+ only, play responsibly.
