Mermaids Millions

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Deep dive to the bottom of the ocean with Mermaid Millions new slot games and swim your way to the ocean's deepest, darkest secrets and its sunken treasures. With a retro feel to the atmosphere, find yourself immersed in the oceanic characters, including the stunning mermaid and the mighty King Neptune, and feel your way around the ocean bed to the treasure chest.

With an RTP of 96.56% and low variance, expect to stumble upon winnings often. Novice and seasoned casino games punters alike will find something to entice them here.

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About Mermaids Millions Slot: How to Play

Mermaid Millions is a pretty straightforward slot, and its gameplay is simple too. It's based on a 5 x 3 reel grid and has 15 active paylines. All the action takes place within these 15 paylines. The bet spread starts from a low 15p and goes up to a reasonable £150.

Landing 2 or more wilds and 3 or more matching symbols for the rest of the characters will form winning combinations and award you prizes. Wins pay from left to right except for the scatter symbol. Only the highest wins get paid per line.

The entrancing Mermaid and the Treasure Chest are the scatter symbols in Mermaid Millions, while King Neptune acts as the slot's Wild symbol. About 10 base game characters and 3 special symbols trigger bonus features, including the wild, scatter and treasure chest symbols.

Let's take a look at the steps you follow to play the game:

  • After signing up or registering at Free Spins No Deposit Casino, you'll go to Mermaid Millions' game page.
  • All controls are on the right side of the slot. Located at the top is the three dash button for settings. Access the game info, sound controls and pay tables through the settings before you begin to play.
  • Below the settings button is the Autoplay button. You can access the game hands-free by presetting the number of spins from 10 to 100.
  • The spin button is below the Autoplay button, but we're not ready to begin playing yet.
  • Below the spin button is the Turbo Spin feature button. Activate it to inject speed into your spin function.
  • Lastly is the bet button; choose between several bet options or click the Max Bet button to jump straight to the highest bet possible.
  • Now you're ready to begin. Click the spin button and start playing.
  • King Neptune is the highest paying symbol. Land 5 of these across the payline and win a colossal 3750 coins in one spin.

Min/Max Bet

£0.15- £150

Return to Player (RTP)





5 reels, 3 rows & 15 paylines



Bonus Features

Wilds, Scatters, Free Spins Rounds, Treasure Chest bonus


Microgaming. 2005

Max Win


Game Controls

Autoplay, Music, Stop, Spin, Turbo spin.

Related Games

Lord of the Ocean , Queen of Atlantis, Immortal Romance slot, Gonzos Quest Megaways slots, Irish Eyes Free Spins

*All values in this table are subject to change at any time.

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Free Spins and Bonuses in Mermaids Millions

If anything makes this game still relevant and playable, it is its variety of bonus features. With a generous helping of free spins, treasure chest bonuses and wilds to help you on your way to the land of riches, Mermaids Millions has something for everyone. In fact, as one of Microgaming's first ventures into online slots, this game was advanced for its use of these variable bonus features. Let's take a detailed look at these bonus features:

Mermaid Millions Free Spins Bonus:

The free spins bonus feature gets triggered after landing 3, 4 or 5 Mermaid scatter symbols on the reels. After being awarded the prize of 4x, 50x or 400x your bet, you'll go on to take your 10 free spins for a, uh, spin.

The twist? All payouts during the free spins get a 3x multiplier boost. One way to keep these free spins coming is to land 3 more scatter symbols during this free spins round. This round can stack up your winnings and lead you to the massive prize of 1500x the stake.

Treasure Chest Bonus Feature:

The second bonus feature that punters will come across is the Treasure Chest bonus feature. Landing the treasure chest scatter symbol in 3s, 4s or 5s will transport players to the bottom of the ocean, where sunken treasures await. Choose amongst the chests displayed and win cash prizes. How many chests you can choose depends on how many scatter symbols you originally landed on. Landing 3, 4 or 5 scatters lets you choose 3, 4 or 5 chests, respectively. When you land these scatters, you will also get a prize accordingly. 


3 scatters

4 scatters

5 scatters

Treasure chest

2.4 - 100x

3.2 - 133.33x

4 - 166.66x

*All values in this table are subject to change at any time.

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Graphics and Symbols

Mermaids Millions might not be a standout, graphically or even thematically. The Microgaming slot released back in 2005 has a very 2D feel, with a two-tone flat backdrop and a slot covering the entirety of the screen. The graphics might seem a bit dated, but they do the job.

The redeeming point of the slot is its almost lifelike special symbols. The King Neptune Wild winks, the Mermaid scatter giggles, and the treasure chest opens to reveal its riches whenever they form part of a winning combo. This makes the game come alive.

The lower paying card symbols are also wreathed with objects of the deep-sea, including pearls, octopus, the trident of King Neptune and the crab clutching the Ace. The music, too, is basic and acts more as ambient sounds than anything. 


2 on a payline

3 on a payline

4 on a payline

5 on a payline

King Neptune





Treasure Chest





Jewels in a Box



































Jack/ 10.





*All values in this table are subject to change at any time.

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Who is the Developer of Mermaids Millions?

Mermaids Millions was developed by Microgaming back in 2005, and like all Microgaming slots, it focuses more on the gameplay and bonuses rather than the graphics and theme. That's not to say the studio hasn't released some stellar slots now and then, but their main focus remains on the brick-and-mortar casinos, which are the reason for their popularity. Here are a few popular online slots released by Microgaming recently that have garnered immense praise and fan following.

  • Sherlock & Moriarty: Wow Pot
  • Fire Forage
  • Mystic Shrine
  • Thunderstruck
  • Bushi Sushi

Microgaming has been a member of the gambling industry for years and has a finger on the pulse of gamblers across the world.

Hit or Miss?

So the question remains, is Mermaids Millions a hit or a miss? Well, for some, the dated graphics might be a downer, but we certainly think the slot makes up for it plenty. The RTP is a good 96.56%, and the slot has low variance, which means that punters should expect small wins ever so frequently. If you know what to expect and can manage expectations, Mermaids Millions can be quite a fun game to play.

Our review team thinks the slot deserves a solid 6/10.

Frequently Asked Questions:

Can I play Mermaids Millions with no deposit free spins?

Mermaids Millions has a free spins bonus feature that is only accessible to registered players.

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How much can I win on Mermaids Millions?

You can win a grand prize of 1,500x your total bet when you play Mermaids Millions.

How do I win free spins on Mermaids Millions?

Unlocking the free spins feature on Mermaids Millions is easier than ever. Manage to land 3 or more mermaid scatter symbols and win an instant prize of 10 free spins!

Apart from the in-game feature of free spins, punters playing at Free Spins No Deposit Casino can win free spins in many other ways. There are the Happy Hours free spins, up to 500 monthly free spins, and hundreds of other promotions (Full T's and C's Apply).

What is the RTP of Mermaids Millions?

The RTP of Mermaids Millions is 96.56%.

How volatile is Mermaids Millions?

Mermaids Millions has a low variance grade.

Can I play Mermaids Millions on mobile?

Microgaming has upgraded this slot to be compatible with all desktops, Mac books, smartphones and tablets.

A cult classic with a mythology theme, Mermaid Millions has a fun feel to it, with treasures to be found just around the corner. Find yourself immersed in this quiet and focused slot and wager your chances to win big.

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All values (Bet Levels, Maximum Win, etc.) mentioned in relation to this slot game are subject to change at any time.


Any Free Spins/Welcome Bonuses References are subject to the following: NEW PLAYERS ONLY, MIN DEPOSIT £10, MAX BONUS EQUAL TO LIFETIME DEPOSITS (UP TO £250), 65X WAGERING REQUIREMENTS AND FULL T&CS APPLY.