Colourful mermaids, the ocean, new online slot

Our latest game release is already making waves.

It's time to seek wins under the sea.

You won't feel like a fish out of water with the Mermaid Royale slot. You and this game mermaid for each other.

Ever caught yourself wondering if mermaids are real? Well, Thunderbolt Casino has got the answer with the Mermaid Royale slot game review.

Demo Play to play Mermaid Royale

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Game Specifics

  • Volatility: medium
  • Reels: 5
  • Paylines: 25 fixed
  • Win direction: all symbols pay left to right except the scatter symbol
  • Features: special scatters, free games, respins, random boosters, expanding wilds
  • Jackpot: no
  • Scatter symbols: treasure chest, +3 free games symbol, +4 free games symbol
  • Wild symbol: ornate mermaid crown
  • Max payout: 50,000 times the bet per line
  • Available platforms: download, instant play, and mobile

All about the Mermaid Royale Online Slot

Where the sun meets the horizon, beneath the capricious seas, you'll find the mystical creatures of the deep in the kingdom of Atlantica. This majestic realm has an abundance of glistening treasures, sparkling sea jewels, enchanting features, and good fortune.

The seductive sirens of the deep seas are happy to bestow this good fortune upon you if you give the slot a spin. This medium volatility slot has 25-pay lines and a 50,000-coin top prize. But there's much more than meets the eye. You know mermaids, it's all in the de-tail. What makes this slot magnificent is the unique 3x1 bonus row that spins simultaneously with the 5x3 gameboard.

You'll be entirely enchanted by the Mermaid Royale slot, that's for shore.


Just like the mythical mermaids, the symbols of this slot game are royal and extravagant. We know it can get over-whale-ming but we've broken it down for you:

  • High-paying symbols: royal mermaids with kaleidoscopic hair

  • Lower-paying symbols: Ruby red crab, emerald green turtle, amethyst purple fish, sapphire blue seashells

  • Wild symbol: opulent royal mermaid crown

  • Scatter symbols: +3 free games and open treasure chest

  • Special scatter symbol: +4 free games

Bonus Rounds and Features

You're going to be totally hooked once you see all the bonus rounds and features of this slot game. Shell we tell you more?

Free Games

When three or more normal scatters, three or more regular and special scatters, or three or more special scatters appear on the bonus row or the main 5x3 gameboard, respectively, then free games are awarded as follows:

  • Each regular scatter appearing on the 5x3 gameboard awards 3 free games

  • Each special scatter appearing on the 5x3 gameboard awards 4 free games with a Random Booster

Each special scatter that appears during the spin that initiates the Free Games also adds one Random Booster. Reels 2, 3, and 4 will also change throughout the bonus rounds into Oversized Symbol reels that spin in tandem with reels 1 and 5. Finally, for every retrigger scatter that lands in the bonus row, an additional free game is given.


Reels 2, 3, and 4 turn into a 3x3 Oversized Symbol that locks in place if three Treasure Chest scatter symbols or a combination of Treasure Chest scatters and wild symbols land in each of the three positions on the bonus row. This triggers three respins right away. The Oversized Symbol then remains locked as reels 1 and 5 continue to spin.

Random Boosters

Only when one or more special scatters appear on a spin that triggers the free games can a Random Booster be activated. You will receive 1 Random Booster for each special scatter if this occurs.

Each retrigger scatter that shows up on the bonus row during the Free Games round also adds a Random Booster. The Random Booster features are:

  • A full stack of wilds on reel 5

  • A x2 multiplier

  • Double the chance of wilds appearing on the Oversized Symbols reel.

Expanding Wilds

Another thing to keep in mind about the Wild symbol is that, during a base game spin, if it occurs on the bonus row, all spots beneath it on the reel in the primary 5x3 gameboard also become Wild symbols.

Mermaid Royale Free Spins

Best you seas the day with the our first-rate bonuses and promotions, including 30 free spins on Mermaid Royale. Play Mermaid Royale for real money today!

30 Free Spins on Mermaid Royale

Coupon code: RYL30

Requires a deposit in the last 7 days

Valid from 21 December 2022- 21 January 2023

How to get your bonus: click the coupon code above or button below to directly add it to your account if you've made a deposit in the last 7 days | Thunderbolt Casino Terms & Conditions apply.

colourful mermaids,casino chips, new online slot


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