Neptunes Harem

Neptune’s Harem

Dive deep beneath the ocean waves and meet Neptune’s Harem, a 5-reel, 3-row slot from Microgaming partner Gong Gaming. Enter the opulent free spins game or randomly trigger the Royal League Jackpot Feature for a shot at the slot’s 10,000x your stake max potential.
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What does John have to say?

The generous RTP, medium volatility, and addition of 4 fixed jackpots has made this journey deep below the surface one worth taking any time.

Leanna Madden


Leanna Madden

100% up to €300 + 25 Free Spins on Book of Dead

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  • Thumbs-Up Solid RTP of 96.90%
  • Thumbs-Up 4 Randomly triggered fixed jackpots
  • Thumbs-Up Up to 10,000x your stake maximum potential
  • Thumbs-Down Nothing groundbreaking here

Neptune’s Harem Review

Who knew that the Roman god, Neptune, was hiding away in his mighty palace deep beneath the sea surface with a harem of beautiful mermaids? Well, that’s the setup for Neptune’s Harem, a 5-reel, 3-row and 20-payline slot from Gong Gaming, a studio using Microgaming’s popular platform. The underwater theme helps to create an atmospheric feel as the reels spin ferociously in front of Neptune’s palace. Landing bonus symbols can open the palace gates and welcome you into the free spins round, whilst a randomly triggered jackpot feature could award you with a 10,000x your stake prize right out of the base game! Godlike or drowning in failure? Read on for full details now.

SLOT FEATURES Free Spins, Multipliers, 4 Jackpots
GAME PROVIDER Microgaming/Gong Gaming
SLOT TYPE Video Slot
THEME Roman Mythology
REELS, ROWS, PAYLINES 5 Reels, 3 Rows, 20 Paylines
BET LEVELS £0.20 – £25
MAXIMUM WIN 10,000x Your Stake
Neptune's Harem

Neptune’s Harem Bonus Features

Neptune’s Harem harbours two very welcome bonus features within it’s underwater palace. The first is the traditional free spins round, triggered by landing bonus symbols on reels 1 and 5. A 2 handed pick-game will determine what you enter the bonus feature with. A 15 free spins and a 10x multiplier combination is possible here. Also lurking in the depths of this slot, you’ll find a very lucrative jackpot feature. Randomly triggered from any base game spin, you get to roll the dice in pursuit of the slot’s 10,000x your bet top prize. Let’s inspect all slot features in detail.


Neptune’s famous 3 pronged spear represents the wild and can substitute for all regular symbols to help boost your win potential.


A grand looking Neptune turns up as the scatter in Heptune’s Harem and pays out when 3 or more land. However, it’s not the scatters but the large golden doors of the bonus symbol that are the key to unlocking the free spins round in this slot.

Free Spins

The slot’s free spins feature is triggered by landing a bonus symbol on both reels 1 and 5. Once the grand golden gates have swung open, 4 cards will be dealt onto the screen, each featuring a member of Neptune’s harem and a different quantity of up to 15 free spins. Picking one, the mermaid featured will request that you select her a gift by picking from another 4 cards. Each one contains a random multiplier between 2x and 10x for the round, which is only revealed once you’ve selected it.

Neptune’s Harem Royal League Jackpot Feature

In addition to the free spins bonus feature, Neptune’s Harem also features a randomly triggered Royal League jackpot. This can spring into life on any spin in the base game and will convert the screen into a 7×7 gemstone filled grid. A roll of 2 dice will determine which colour you land on and the prize you are awarded as follows:

  • Blue Gemstone – 10x your bet
  • Green Gemstone – 100x your bet
  • Red Gemstone – 1,000x your bet
  • Gold Gemstone – 10,000x your bet

RTP and Volatility

With a medium volatility rating and generous RTP of 96.90%, Neptune’s Harem looks in very good shape indeed from a stats perspective.

Where to Play Neptune’s Harem

Casino Planet comes highly recommended by our slots experts as a place to play the best Microgaming titles around. They have also compiled a fantastic toplist if you’re after more great casino bonuses and offers.

Neptune’s Harem on Mobile

You can dive deep under the waves wherever you are, thanks to the full mobile compatibility of Neptune’s Harem. It worked seamlessly on all of the iOS and Android devices we tested it on.

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Leanna Madden is an expert in online slots, specializing in analyzing game providers and evaluating the quality and variety of slot games. With her extensive knowledge, she guides players to the best slot options, including high RTP slots and those with exciting bonus features. Leanna's insights help players make informed decisions and enjoy rewarding slot experiences at online casinos.

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