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Author Lisa Michaels

Neptune’s Harem Online Slot

Neptune’s Harem Online Slot is a 5x3 reel, 20 payline, medium volatility title by Microgaming and GONG Gaming Technologies. The Roman god of the seas is often depicted as a serious fellow, but in this slot he is decidedly at ease, surrounded by a bevy of beautiful mermaids. Sealife floats by in the background while the fish-tailed beauties appear as symbols. The bonus features include free spins and wilds, and you can play this game across all platforms.

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Return to Player


Neptune's Harem

Game Details

Software providerSoftware:




Reels amountReels:


Slot VolatilityVolatility:


Slot Game TypeGame type:

Video Slots

Slot PaylinesPaylines:


Min coin betMin coin:


Max coin betMax coin:


Free spins offeredFree spins:


Wild SymbolsWild symbol:


Progressive jackpotProgressive:




Game Features

  • The lower-value symbols are sacred ocean artifacts adorned with jewels
  • The pearl pays 5x your bet for 5 on a payline.
  • The seashell pays 7.5x your stake for 5 on a payline.
  • The scallop pays 10x your stake for 5 on a payline.
  • The star pays 12.5x your stake for 5 on a payline.
  • The higher-value symbols are four alluring mermaids.
  • The purple mermaid pays 15x your stake for 5 on a payline.
  • The green mermaid pays 17.5x your stake for 5 on a payline.
  • The blue mermaid pays 20x your stake for 5 on a payline.
  • The red mermaid pays 25x your stake for 5 on a payline.
  • The scatter symbol is Neptune himself and pays 40x your stake for 5 on a payline.
  • The wild is a chunky trident that stands in for any other symbol besides the scatter and Bonus.
  • The bonus symbol is a golden door that triggers free spins.

Bonus Features

Royal League Jackpot

This feature is randomly triggered during the base game and replaces the standard reels with a 7x7 game board. The board is filled with gold, red, green, and blue gems. You will have to roll a set of dice which move you around the grid and when the crown symbol comes up, the game will end and you will be paid a jackpot based on what gem you landed on. IF you land on blue, red, green, or gold, you will receive a prize of 10x, 100x, 1000x, or 10 000x your stake, respectively.

Free Spins

If two bonus symbols land on reels 1 and 5, you will be transported to a different screen where you choose from 4 cards to gain 5,7,10, or 12 free spins and then you will choose from the cards again to secure a 2x, 3x, 5x, or 10x multiplier.


Neptune’s Harem slot presents great winning opportunities with a theme that could be better. The slot’s appearance is entertaining enough with a selection of sexy mermaids to keep your eyes delighted. It is a shame that there wasn’t more integration between the theme and gameplay as many humorous moments could have emerged. The Neptune scatters constantly delivers wins as they pay from any reel position and the free spins feature can get you some serious value if you hit the maximum multiplier.

If the roll of the dice is in your favour, you could claim the slot’s top prize of $250 000 with the Royal League Jackpot. Its thematic shortcomings aside, this title delivers exciting gameplay and decent winning potential.

Author Lisa Michaels

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Lisa started off as a croupier at her local casino. However she found her niche in writing and has subsequently used her real-world gambling experiences to help produce and review the many online slots that are released monthly. Lisa also contributes to keeping you up to date with Canadian newsworthy stories.

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