Mermaid Millions

Released in 2008, Microgaming’s Mermaid Millions online slot is set in the whimsical underwater realm of King Neptune, the ancient Roman god of the sea. The game’s theme is based around a beautiful blonde mermaid and is reminiscent of Disney’s animated hit film The Little Mermaid. In the slot, players dive deep into the ocean in search of riches like rubies, sapphires and pearls, while working to activate two very lucrative bonus rounds.

Continued popularity: Now nearly 8 years old, the game doesn’t possess the high-end graphics of today’s modern slots, but has continued to remain popular through the years and is still beloved by online slots fans.

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How to play

Betting options: Mermaid Millions is a simple 5-reel, 15-line slot with a max bet of 75 coins. As the paylines are unfixed, players have the choice of betting as many of them as they like by clicking the Select Lines button repeatedly until reaching their desired amount. The slot also offers the choice of changing the value of each coin using the plus and minus buttons located under the dial. To skip the whole process and bet all 15 lines with max coins, simply click the Bet Max button. The action will set the options instantly and the reels will automatically begin to spin.

High-value symbols: The games high-value symbols are designed around the ocean theme and include the following:

  • Jewelry Box: Pays 50 to 500 coins
  • Clam: Pays 20 to 500 coins
  • Seahorse: Pays 15 to 250 coins

Wild symbol: King Neptune is the wild symbol and substitutes for all others except for the Mermaid scatter and the Treasure Bonus symbol. The wild can also net you the biggest payday, a massive 7,500 coins when five appear on the reels.

The remaining symbols are made up of the usual generic playing card values:

  • A: Pays 10 to 125 coins
  • K: Pays 5 to 100 coins
  • Q: Pays 5 to 100 coins
  • J: Pays 2 to 75 coins
  • 10: Pays 2 to 75 coins

At A Glance

  • Bonus Feature: yes
  • Scatter: Yes
  • Free Spins: Yes

Graphics and sounds

Dated graphics: As Mermaid Millions was created many years ago, Microgaming can be forgiven for the primitive graphics drawn up for the game. The reel set is positioned in front of a basic blue backdrop and is flanked by large colorful buttons indicating each payline. When a winning match is scored, some of the symbols highlight the occasion with some simplistic movement. For example, when King Neptune appears in a match, he’ll give you a wink.

Sound: The game doesn’t have a musical soundtrack, and instead plays background noise giving the feeling that you are underwater.


There is plenty of cash to be won in Mermaid Millions’ two casino bonus rounds, or by hitting five King Neptune symbols for a 7,500-coin payday. The game does not offer a progressive jackpot, meaning that your full bet will go towards winning the most coins as possible, and not to feeding a community prize pool.

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Special features and symbols

Two bonuses: Mermaid Millions was a bit ahead of its time in that it offered not one, but two bonus rounds, unlike other online slots of that era. When you hit 3, 4 or 5 scattered Mermaid symbols, you’ll enjoy 10 free spins with all wins tripled. You’ll also receive a scatter pay of up to 400 coins, depending on how many Mermaid symbols are involved in the trigger.

Even more exciting is the Treasure Bonus, which is activated when 3, 4 or 5 Treasure Bonus symbols fall on an active payline. When you’re lucky enough to trigger this bonus feature, you’ll walk away with a potentially serious payday:

  • 3 Treasure Bonus symbols: 36-1,500 coins
  • 4 Treasure Bonus symbols: 48-2,000 coins
  • 5 Treasure Bonus symbols: 60-2,500 coins

Unlike the scatter bonus, these win amounts are not multiplied by three and already take into account your initiating line bet.


Simplicity: Mermaid Millions is a somewhat dated slot that incorporates cute, cartoonish graphics with action-packed gameplay to create a fun and exciting gaming experience. While more modern slots may contain more sophisticated animations and complex bonus rounds, the enduring popularity of Mermaid Millions is a testament to how well its developers crafted the slot. It goes to show that even though a game might be more high-tech, it doesn’t mean that players will find it more fun to actually play.

In one aspect, though, Mermaid Millions was ahead of its time. The inclusion of two bonus rounds – the Treasure Bonus and the free spins scatter bonus – was something that wasn’t too common many years ago.

In the end, Mermaid Millions doesn’t take itself too seriously and provides a playful and fun gaming experience with the possibility of winning a big payday.