Mermaid’s Millions Slot Machine

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Mermaid’s Millions demo
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Return to player Min bet size Game type Variance Reels Progressive Jackpot
95.5% 0.15 Video Slots Low 5 No
Popularity Max bet size Game provider Bonus Features Paylines Theme
75 Microgaming No 15 Nautical

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Mermaid’s Millions online slot game

Mermaid’s Millions is an underwater themed slot with fantasy characters and a very basic setup. As it was released in 2005, it feels and looks retro, but the simple gameplay and regular pay-outs make it an enduring title that is particularly by old-school and new part-time gamers alike.

Theme and Story Line

 The theme of Mermaid’s Millions is underwater treasure and, as the title suggests, mermaids. The reels are adorned with pearls, jewels and even some scary-looking tentacles, while you’ll also get an appearance from Neptune himself and several treasure-laden underwater chests. The whole thing is reminiscent of Disney’s The Little Mermaid, and you half expect the sea creatures on the reels to start singing as you play.

 Graphics, Sounds and Animations

 As far as the graphics go, the game now looks very basic compared to some of the pioneering 3D options around. There are a couple of animations, with Neptune and the Mermaid moving slightly when Wild or Scatter are activated, but other than that it’s a mostly static game. 

On the bonus game screen, you open chests to reveal your win bonuses and this adds a bit of anticipation to the separate screen environment. However, as it is one of the oldest enduring slot games around, there isn’t much more of note.

The music is in keeping with a magical underwater realm; sparkles, bubbles rising to the surface of the sea and the warped noises you would expect from within a diver’s helmet all add to the atmosphere, which is geared towards keeping the general environment light-hearted and colourful. 

Mermaid’s Millions 1

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Mermaid’s Millions has 5 reels with 15 paylines, which you select during game setup before you start to play. The symbols are 10, J, Q, K and A, as you expect from older games, with the seahorse, clam, Mermaid, Neptune and jewel box symbols being higher value or special symbols.

The Treasure Bonus plays on a separate screen and is a simple point-and-click- affair, where you’re directed to open several from a range of chests and closed clam shells to reveal your winnings.

Mermaid’s Millions 2

Bonuses and Free Spins

If you get 3, 4 or 5 Scatter symbols, you get 10 free spins. In this mode, all winnings are tripled, and you do have the opportunity to re-trigger your free spins for prolonged play and a higher chance of a big win.

Neptune is wild and can stand in for all other non-bonus symbols, while 5 Neptunes across a pay line activates a pay-out of 7500x that line bet.
The way to activate the bonus game screen is by landing 3, 4 or treasure chests. On the separate screen, you click to select random boxes or shells for bonus amounts, which are added to your total along with the pay-out for getting to the bonus game in the first place.

Bet sizes, RTP and Variance 

With bets starting at £0.15, it is an accessible title for the more casual gamer. Meanwhile, the top end of £75 gives a chance for major success, with a fixed maximum win of 120,000 coins from a 75-coin bet. 

The variance is low, so users need patience to get a chance to win, but with such low bet amounts available, there is a chance for newbies to get used to playing low variance games without doing too much damage to their pockets. The RTP is at just below 96%, which is average if unspectacular.


Mermaid’s Millions is a simple slot with a low minimum bet, making it ideal for beginners despite the low variance requiring some patience. As a classic game, it feels retro which appeals to quite a wide range of gamers, and the separate bonus game is well designed to provide a sense of anticipation. The potential jackpots are large, although Microgaming have since produced slots in the same mould with much larger pay-outs on offer. However, if you like a nautical theme, this is the oldest and still one of the best around.

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