Royal League: Neptune’s Harem Online Slot

Published: 2021 Jul 27 | Updated: 2023 Aug 8
Game Provider
Maximum win
Progressive Jackpots
Bonus Feature
Ancient Greece, Underwater

Licensing Authorities and Testing Agencies

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Slot Setup and Betting Options

  • 5 Reels
  • 3 Rows
  • Autoplay Option
  • 26.07.2021 Release Date
  • Royal League series Part of a Series
  • Mobile Version
  • CA$0.20 Minimum Bet
  • CA$25.00 Maximum Bet
  • CA$0.01 Minimum Bet Line
  • CA$0.80 Maximum Bet Line
  • 20 Paylines
  • Win Both ways

Royal League: Neptune’s Harem Online Slot Review

Take the plunge and play the Royal League: Neptune’s Harem online slot from Games Global and their partner GONG Gaming Technologies. It’s a 5-reel, 20-line game where you get to meet a variety of gorgeous mermaids, on PCs, iOS, Android, or Windows mobiles.

These alluring characters unlock a selection of free spins rounds with various multipliers. You can also trigger a jackpot bonus feature at random. Roll virtual dice to win up to 10,000x your wager in this round.

Royal League: Neptune’s Harem is a medium volatility slot where the average return to players percentage is an outstanding 96.90%. Dive into this game at the top-ranked online casinos today.

How to Play the Royal League: Neptune’s Harem Slot Machine

Load Games Global's Royal League: Neptune’s Harem transports players to a watery world, filled with jewels, seashells, and mermaids. The dark blue backdrop suggests that the action plays out deep underwater, where the Roman god of the sea, Neptune rules. It’s an attractive game, where the appeal is heightened by the high-paying mermaid symbols and a dramatic soundtrack. Look to the left of the reels, where you see the 4 Royal League jackpot values.

A wager range of 0.20 to 25.00 is a little less than we like to see, but the 10,000x multiplier from a jackpot round can still lead to sizable prizes. You can choose stakes with ease, and other control options include an automatic spins mode and fast-play feature.

The paytable lists how much you win from each symbol, with 3, 4, or 5 of the same type across any of the 20 paylines needed to claim a prize. The 4 mermaids pay the biggest prizes, so you’ll want to see these characters as often as possible. Neptune’s trident is a wild symbol that can act as all except the main man to complete wins. For players keen on maximizing their gaming experience without initial financial outlay, seeking out platforms that offer no deposit bonuses can be an excellent strategy.

Free Spins & Other Royal League: Neptune’s Harem Slot Features

If bonus symbols land on the outer reels at the same time, you get any of 4 free spins bonus features. Before the games begin, you need to pick from 4 face-down card to reveal which bonus feature will then play out. You can reveal 5, 7, 10, or 12 free spins, and you then enter a second round where cards award win multipliers of 2x, 3x, 5x, or 10x.

This means you could potentially get 12 free games with all wins multiplied by 10x, but could also have just 5 extra games with wins doubled. Whatever happens, the free spins can retrigger with the appearance of more bonus symbols.

The Royal League jackpot feature can start at any time during the base games, but not in the free spins. It plays out on a 7x7 grid of brightly-colored gems, and you roll dice to select the each type. Once you have enough of a single color, you claim the corresponding jackpot, with a win guaranteed.

Blue gems award 10x your wager, and green gems are worth 100x. Collect red gems and you win 1,000x the total stake, with gold symbols leading to the top prize of 10,000x your wager.

Slot Features

  • Multipliers
  • Fixed Jackpot
  • Scatters
  • Wild symbol
  • Free Spins
  • Re-spins
  • Quickspin
  • Gamble feature
  • Retriggering

Maximum Win, Average Returns, & Volatility of the Royal League: Neptune’s Harem Slot

The 10,000x win multiplier equals a prize of 250,000.00. While the multiplier is better than most games, the low 25.00 maximum wager level is a disappointment that limits your potential win. An average return to players percentage of 96.90% is well above the usual level, and means you can play the Royal League Neptune’s Harem slot machine for longer with less risk.

It’s a medium volatility game, which strikes a decent balance between prize values and the frequency of winning spins.

Our Thoughts on the Royal League Neptune’s Harem Slots Game

With the notable exception of a limited maximum wager size, the Royal League Neptune’s Harem slot is another outstanding title in the Games Global slots library. It’s a good-looking game that sticks to a popular topic, and it’s overflowing with extra features.

A choice of free spins with multipliers let’s you decide the volatility, and once the jackpot feature triggers, you are sure to collect either the Blue, Green, Red, or the huge Gold prize. Dive in and meet the mermaids at the best Games Global sites with the biggest welcome bonuses featured here.


Follow our guide to the best Games Global online casinos, where you can play the Royal League Neptune’s Harem slot along with many other games from this popular developer. Be sure to claim a welcome bonus when you join a recommended casino.

Although there are 4 jackpots in the Royal League Neptune’s Harem online slot, these are not progressives, where the value increases until someone wins the prize. The Blue, Green, Red, and Gold jackpots are fixed amounts worth 10x, 100x, 1,000x, and 10,000x the wager.

Bonus symbols launch a special feature of the Royal League Neptune’s Harem slot. Pick from cards and the reels spin for between 5 and 12 times, without the need to place any wagers at all. All wins during the round are multiplied by between 2x and 10x.

The Royal League Neptune’s Harem slot machine is fully compatible with Android and Windows smartphones and tablets, iPhones, and iPads. You’ll find that the mobile version works in exactly the same way as the desktop game.

Play the Royal League Neptune’s Harem slot and you encounter an underwater world of precious pearls, stars, and seashells. Four mermaids also appear on the reels, along with Neptune’s trident. Neptune himself is a bonus symbol who awards the free spins.

Ancient gods of the sea are a popular topic, and the Royal League Neptune’s Harem slot machine is one of many the look very similar. Play the Ancient Fortunes Poseidon Megaways slot that also comes from Games Global, to unleash a powerful deity across as many as 117,649 winning ways.

The Royal League Neptune’s Harem slot has a medium volatility. Over time, it returns average-sized prizes at an average frequency. High volatility games pay greater prizes, but less often, and low variance games tend to return lots of smaller wins.

Unfortunately, the wager range of the Royal League Neptune’s Harem slots game is quite limited. You can play with as little as 0.20 on each spin, or raise stakes through multiple options to a maximum of 25.00. That highest level may put off many players looking to place big wagers.

The average return to players percentage of the Royal League Neptune’s Harem slot machine is 96.90%. That’s exceptionally generous and means that over the long term, for every 100.00 wager on the game, 96.90 is returned in prizes.

Games Global and their partner GONG Gaming Technologies launched the Royal League Neptune’s Harem slots game on 26th July 2021.