Mermaids Millions Slot Review

3.2/5
Based on our expert’s review. Reviewed by
Microgaming Slots
Review by
Chris Taylor
Updated: 28/11/2022
Review by
Chris Taylor
Updated: 28/11/2022

Since first swimming into online casinos way back in 2005, the Mermaids Millions slot has become a firm favourite with aquatically minded players. This Microgaming title is a 5 reel, 15 payline game that comes with a pair of classic bonus features. The Treasure Bonus feature is a Pick Me round where choosing chests can deliver sunken ocean riches. The other is the Free Spins feature. Once triggered, you’ll play up to 20 free spins. All winning combinations during the free spins are boosted by a 3x multiplier with the payout trebled. Is it still worth diving into these rather retro waters? Find out in our deep dive Mermaids Millions review.

Max Win
1,500 x bet
Play
T&Cs Apply

18+. New players only. 100% bonus on first deposit up to £50 & 50 Bonus Spins (30 spins on day 1, 10 on day 2, 10 on day 3) for Rich Wilde and the Book of Dead slot only. Min first deposit of £10. Max bonus £50. Max bonus bet £5. Max bonus cash-out £250. 40x wagering requirements. Bonus expiry 30 days. Bonus spins expiry 2 days. Game restrictions apply  Further Terms Apply #ad

Provider
Microgaming
Type of Slot
Video Slot
Theme
Underwater
Reels
5
Paylines
15
Stakes Range
15p to £150
Bonus Features
Free Spins/Multiplier
10-20/3x
Max Win
1,500 x
RTP
96.56%
Volatility
Low

Mermaids Millions Demo

18plus uk-gambling-commission online-slot-co-uk-logo agechecked-verification-provider
T&Cs Apply 18+. New players only. 100% bonus on first deposit up to £50 & 50 Bonus Spins (30 spins on day 1, 10 on day 2, 10 on day 3) for Rich Wilde and the Book of Dead slot only. Min first deposit of £10. Max bonus £50. Max bonus bet £5. Max bonus cash-out £250. 40x wagering requirements. Bonus expiry 30 days. Bonus spins expiry 2 days. Game restrictions apply  Further Terms Apply #ad
18plus uk-gambling-commission online-slot-co-uk-logo agechecked-verification-provider
T&Cs Apply 18+. New players only. 100% bonus on first deposit up to £50 & 50 Bonus Spins (30 spins on day 1, 10 on day 2, 10 on day 3) for Rich Wilde and the Book of Dead slot only. Min first deposit of £10. Max bonus £50. Max bonus bet £5. Max bonus cash-out £250. 40x wagering requirements. Bonus expiry 30 days. Bonus spins expiry 2 days. Game restrictions apply  Further Terms Apply #ad

Recommended Casino

Best casinos to play Mermaids Millions slot with real money

100% Bonus up to £100 + 100 Free Spins
T&Cs Apply

18+ new players only. Minimum deposit: £20. Maximum £100 bonus. Max bet with an active bonus: £2. Wagering requirement 100% match bonus: 30 times sum of deposit + bonus. Max redeemable from welcome bonus: £500. 100 Free Spins are given out 20 per day on Book of Dead for 5 days in a row, log in each day is required. Max Free Spins winnings: £100. Winnings from Free Spins are credited as bonus money with a wagering requirement of 45 times. Free Spins expire after 3 days. Some games may not be played with a bonus. Games may contribute differently when wagering a bonus. Play Responsibly! www.begambleaware.org. #ad

100% Bonus up to £100 + 20 Bonus Spins
T&Cs Apply

18+. New customers. Opt-in required. 20 Bonus Spins on “Sahara Riches Cash Collect” at 10p per spin and 100% Deposit Bonus up to £100 on first deposit (payment method and play restrictions apply). Min. deposit £10. 30x wagering for Bonus Spins and Deposit Bonus (game weighting applies). Max. £5/spin or £0.50/line. 30 days expiry. Please gamble responsibly • www.begambleaware.org #ad

T&Cs Apply

T&C’s: First-time depositors only (18+ country restrictions apply. Min Deposit £5. Max Offer: Max offer is 100% Games Bonus up to £30 & 50 Free Spins on [Game of our choice]. Promo code: AMBER5. Any Games Bonus winnings, if applicable, must be wagered 35x before withdrawal. Any Free Spins winnings, if applicable, will be credited as bonus funds and capped at £5. FS are valid for 7 days and any winnings must be wagered 35x before withdrawal. Games Bonus win cap: £100 + original bonus amount. Wagering contribution varies by game. We reserve the right to deny bonuses based on abusive bonus activity across sites operated by the Company. Deposit balance is available for withdrawal at any time (UK only).  General withdrawal restrictions & full T&Cs apply. Valid until 31/12/2023. www.begambleaware.org #ad

T&Cs Apply

18+. New players only. Min deposit £20. Bonuses to a max of £100 + 50 bonus spins. Wagering bonus 35x. Wagering bonus spins 35x. The winnings must be wagered within 21 days #ad

Mermaids Millions Slot RTP, Details & Wager Limits

Reels/Paylines: 5 reels + 15 paylines

Stakes Range: 15p to £150 per spin

Max Win: 1,500 x stake per spin

RTP: 96.56%

As you might expect from such a vintage offering, the setup in the Mermaids Millions slot is very straightforward. The action takes place on 5 reels, 3 rows and 15 paylines. To create a winning combination land 3 or more matching symbols or 2 or more wilds on a payline, starting from reel 1.

Stakes in this underwater adventure range from 15p to £150 per spin (the latter is for the high rollers with extremely deep pockets). To change your stake level, click on the coins to the right of the reels then pick your level. Above the spin button, you’ll see a circle made up of 3 arrows. Click on this to activate the autoplay function. This allows you to run between 5 and 100 autospins, but it’s not available to UK players.

The Mermaids Millions RTP is 96.56% which is well above average. These are tranquil waters when it comes to variance. The volatility is low.

The hit frequency rate of 34.29% means that you’ll land a winner on just over one-third of spins on average.

The max win is 1,500 x your total stake per spin. This is best achieved in the Free Spins feature with the 3x multiplier.

Theme – head under the ocean

Theme: Underwater

High Value Symbol: Pot of Gems

Compatibility: Mobile, Tablet, Desktop

mermaids-millions-slot-base-game

A slot released in 2005 was never going to have the design flair we’ve come to expect from new slot games. The Mermaids Millions slot game is very simple, yes, but the cartoon-style graphics still do the job here pretty well. You’ll hear the bubbling of the sea while you spin as well as the occasional haunting bleep. Despite its age, the sound and visuals stand up pretty well.

With the deep blue ocean in the background, the reels include A to 10 royals embellished with starfish, octopus, pearls, a trident and a lobster. More rewarding are the seahorse, oyster and pearl and pot full of gems. The pot full of gems symbol pays the most with a payout equal to 3.33, 6.66 or 33.33 x your total stake for 3, 4 or 5 on a payline.

The bearded figure of Neptune is the Wild. He can land anywhere and substitute for all the standard symbols. He can be very lucrative too. Land 5 wilds across a payline for an award of 500 x your total stake.

Symbol Payout/Info
mermaids-millions-slot-10-symbol10 3, 4 or 5 = 0.13, 1 or 3 x stake
mermaids-millions-slot-j-symbolJ 3, 4 or 5 = 0.13, 1 or 3 x stake
mermaids-millions-slot-q-symbolQ 3, 4 or 5 = 0.33, 1.66 or 6.66 x stake
mermaids-millions-slot-k-symbolK 3, 4 or 5 = 0.33, 3.33 or 6.66 x stake
mermaids-millions-slot-a-symbolA 3, 4 or 5 = 0.66, 3.33 or 8.33 x stake
mermaids-millions-slot-seahorse-symbolSeahorse 3, 4 or 5 = 1, 3 or 16.66 x stake
mermaids-millions-slot-clam-symbolClam 3, 4 or 5 = 1.33, 6.66 or 33.33 x stake
mermaids-millions-slot-jewellery-box-symbolPot of Gems 3, 4 or 5 = 3.33, 6.66 or 33.33 x stake
mermaids-millions-slot-wild-symbolWild Substitutes for all standard symbols + pays up to 500x
mermaids-millions-slot-scatter-symbolScatter 3+ awards 10 free spins + pays up to 400x
mermaids-millions-slot-treasure-bonus-symbolTreasure Bonus 3+ triggers Treasure Bonus feature + pays up to 166.66x

Mermaids Millions Mobile

mermaids-millions-mobile-slot

Tablets were even a thing when this slot was first released. Now, you can play Mermaids Millions on smartphones, tablets and computers as Microgaming has revamped this favourite since it was first introduced. The simple, colourful graphics and straightforward gameplay make the Mermaids Millions mobile slot a very easy one to play.

Mermaids Millions Bonus Features

Mermaids Millions comes with a couple of classic bonus features. The Pick Me bonus can deliver plenty of sunken ocean treasure with the free spins offering some decent winning opportunities thanks to the 3x multiplier which is active throughout.

Treasure Bonus feature

mermaids-millions-slot-treasure-bonus-feature

The Treasure Bonus feature is triggered by landing 3, 4 or 5 Treasure Chest scatter symbols on a payline, starting from reel 1, on the same spin. It can be activated during the base game or the Free Spins feature (details below).

Once triggered, you’ll drop down to the seabed where you’ll be offered a selection of 12 treasure chests. Pick one to reveal a cash prize. The number of picks you’ll receive depends on how many Treasure Bonus scatter symbols you hit on the triggering spin.

3, 4 or 5 scatters will give you 3, 4 or 5 picks respectively. This is what you can get depending on the number of scatters you got to trigger the feature:

  • 3 scatters = 2.4 to 100 x your total stake
  • 4 scatters = 3.2 to 133.33 x your total stake
  • 5 scatters = 4 to 166.66 x your total stake

Free Spins feature

mermaids-millions-slot-free-spins-feature

To trigger the game’s Free Spins feature, you’ll need to land 3, 4 or 5 Mermaid scatter symbols on the same spin. After pocketing an award equal to 4, 50 or 400 x your total stake, you’ll go on to play 10 free spins.

All standard payouts are boosted by a 3x multiplier and trebled. The only exception to that is if you land 3 or more Mermaid scatters. That doesn’t get the multiplier boost but it does result in the standard payouts plus another round of 10 free spins, complete with that all-important trebling multiplier. The 3x multiplier is what can lead to 1,500 x stake payouts on each free spin.

Mermaids Millions Review Summary – looks aged but ocean adventure still entertains

Ratings
Theme & Symbols








Sounds & Music








Bonus Features








RTP (96.56%)








Max Win (1,500 x)








Originality








Manage your expectations and you’ll find plenty to like in the Mermaids Millions slot. As you’d expect from such an old game, it doesn’t really compare to today’s super slick slots when it comes to design.

The gameplay is rather basic too, but still nice to play. But don’t expect visuals seen in slots like Bass Boss (Red Tiger Gaming) or Pearls, Pearls, Pearls (Playtech).

You can’t go too far wrong with Pick Me prizes and a free spins round where all payouts are trebled. The RTP numbers stack up well and the low volatility offers plenty of play. It might be an oldie but Mermaids Millions still has its charms.

If you want more classic Microgaming slots, Thunderstruck 2 would be my choice as it has a high RTP of 96.65%, max wins of 8,000 x stake per spin and 4 free spins features. If you want more underwater adventures, the Lord of the Ocean slot by Novomatic is also a classic and comes with 5,000 x stake wins per spin.

Pros
  • Low volatility
  • RTP rate above average (96.56%)
  • Great on mobile
Cons
  • Low max win (1,500 x bet)

Mermaids Millions FAQs

What is the Mermaids Millions RTP?

The Mermaids Millions return to player rate is 96.56% which is higher than most slots. Low variance, you’ll get a win in over a third of spins as the hit frequency rate is 34.29%.

What is the Mermaids Millions max win?

The biggest possible win in Mermaids Millions is 1,500 x your total stake. This can be won in the free spins due to the 3x multiplier which applies to all payouts.

Are there any Mermaids Millions free spins?

Yes, the Free Spins feature begins with up to 400 x stake (5 scatters) and 10 free spins. All payouts are boosted by a 3x multiplier. You can also win 10 additional free spins to take your total to 20.

Is there a Mermaids Millions free play version?

Yes, you can play the Mermaids Millions demo here at Online-Slot.co.uk. Playable on desktop, mobile and tablet devices, you’ll get to sample the bonus features from this classic offering.

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