Mermaid Millions

Mermaid Millions takes you on a fantastical journey under the sea, filled with mystical creatures and troves of treasures to discover. This 5-reel and 15-payline slot features a scatter, wild, treasure bonus, and free spins round with multipliers to really turn the excitement up a notch. The largest casino game developer, Microgaming, released Mermaid Millions in 2008 and it’s still one of the most popular titles in many online casinos. 


  • Slot type: Video Slot
  • Reels: 5
  • Scatter: Yes
  • Theme: Fantasy
  • Lines: 15
  • Bonus Game: yes
  • Free Spins: Yes
  • Payout: 96.56%
  • Software: Microgaming
Mermaid Millions video slot showcases a great theme with exciting features and interesting characters. Encountering the mermaid and King Neptune will help in turning your adventure into a lucrative one. The fast-paced gameplay is packed with action and will keep you on the edge of your seat. Don’t miss out on the fun and get ready for a fruitful trip undersea at one of our trusted casinos below:

How to play?

Mermaid Millions offers many betting options where you can choose the coin size (from 0.01 to 1), number of betting lines (1 to 15), and number of coins (1 to 5) per spin. If you’d rather just bet with the maximum, simply hit the “bet max” button to start the game. You can head into “expert mode” and set how many uninterrupted spins you want in the “auto play” settings. 

After you dived to the bottom of the ocean, make sure you keep an eye out for certain symbols that will give out generous prizes: 

  • Seahorse: pays from 15 to 250 coins 
  • Clam: pays from 20 to 500 coins 
  • Box of gems: pays from 50 to 500 coins 
  • Mermaid: pays from 2 to 400 coins. It’s the in-game scatter symbol which is also the key to unlocking the free spins feature. This means that you’ll just need to land this symbol anywhere on the reels and they will count, even if they are not on an active payline. 
  • King Neptune: pays from 5 to 7,500 coins. King Neptune himself is the wild symbol, helping you complete a winning combination by substituting all other symbols except for the scatter and bonus symbols. 
  • Treasure chest: pays 36 to 2,500 coins. Spin 3 or more of the treasure chest bonus symbols and enter the exciting bonus round where you could only win.


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Mermaid Millions is not a progressive slot, hence, its jackpot is not pooled. The biggest in-game jackpot is 7,500 coins and winning it is straightforward but not easy. All you need to do is land 5 King Neptune wild symbols on an active payline. Sounds simple, right? However, this doesn’t occur a lot and you’ll need Lady Luck on your side for it to happen.  

Mermaid Millions is a low to mid volatility game. This means that although the prizes are not as big as some other online slots, getting winning combinations are not rare and you’ll rake in the reward slowly but more steadily.

Special features 

At Mermaid Millions, you’ll get not one but two special feature rounds. When you spin 3 or more Mermaid scatters, you’ll receive 10 free spins with a 3x multiplier. Even more exciting is that you can re-trigger the free spins round giving you an even better chance to win big. 

When you’re exploring the sea bed, look out for the treasure chest symbol because landing 3 or more of them on an active payline will instantly bring you to a bonus round. You’ll have 3 chances to open the 12 treasure boxes in front of you with coins hidden inside them.

Mobile Version 

In case you need to be away from your desktop computer but still want to search for treasures under the sea, you can play Mermaid Millions directly via your mobile devices. You can access the mobile casino platform with any iOS, Android, or Windows smart phone or tablet, so you can play while on the go.

Graphics and Sounds 

As you’d expect, the colour theme for Mermaid Millions is blue with light blue reels set upon a darker bright blue background. Vibrantly coloured buttons frame the reels on the left and right, with each colour corresponding to a particular payline. The graphics are somewhat dated by today’s standards with limited animation but that is forgivable given that the game is almost a decade old. However, the appearance of the game is still pleasant and visually stimulating. 

There’s no background music but instead, you get an ambient audio effect like you’re swimming in water. When you strike a winning match, a special sound effect takes place, indicating the win.


Mermaid Millions proves that slots don’t always need to have sophisticated graphics and effects to keep punters interested. Many slots have come and go but this slot stood the test of time with the right theme, exciting features, and great gameplay.