Casino Game Review: Mighty Griffin Megaways Jackpot Royale (White Hat Studios)

min read
Mighty Griffin Megaways online slot loading screen.
BetMGM Oct 16, 2023, 3:36 AM

White Hat Studios, a leading online slots and variety game supplier, is associated with some of the industry’s biggest casinos. The slot machine games found in its portfolio cover a wide range of engaging themes. But Mighty Griffin Megaways is a leading example of the many fantasy titles available. 

In this review, you’ll learn all about the slot’s exciting gameplay elements, including the Megaways engine, Golden Streak feature, and three progressive jackpots.

Game Overview

Given that its star is a mythical beast, this highly volatile December 2019 release has an obvious fantasy theme. This is reinforced throughout the game’s design, from the impressive palace situated behind the reels to the dramatic soundtrack.

Mighty Griffin Megaways is undoubtedly aimed at lower-staking players. There’s a minimum bet requirement of $0.10 to spin the reels, through to an upper limit of just $10. This slot also incorporates the now-famous Megaways mechanic from Big Time Gaming, keeping things unpredictable and exciting. The six reels are dynamic and can feature as many as seven symbols each, making for a total of 117,649 ways to win.

One of the most important economic factors behind choosing slot machines is the RTP (return to player) value. This particular title offers an RTP of 95.46%, which is slightly below what is considered to be the industry average of 96%. However, that figure is relatively high for a progressive jackpot game.

How To Play

First of all, you’ll need to choose your stake using the dollar bill icon in the bottom-left corner. When ready, press the circular, intricately-designed griffin symbol to the right-hand side on the screen. Alternatively, use the double arrow button below it to configure your preferred number of automatic spins. 

Line up matching symbols on any of the dynamic paylines to secure a reward in accordance with the paytable. Unlike live dealer casino games, there are no strategic tips and tricks to win at slots, so you’ll just have to trust Lady Luck. The full paytable can be found by clicking the icon with three horizontal lines, then hitting the grid symbol.

Regular Symbols

There are many different symbols to be found in this particular slot, the least valuable of which are the playing card icons A through 9. These brightly colored symbols pay between 0.1x and 1.5x your bet for matching between three and six of them.

Four other symbols in the game pay higher rewards and are very much in keeping with the slot’s theme. A feather, ring, and crown will return 2x, 2.5x and 5x each for six on a payline. You’ll still need a minimum of three in order to earn a prize. 

However, the majestic griffin is by far the most rewarding symbol of all in this game. Land six on the reels, and you’ll bank an impressive 50x. But this symbol is also unique in the game since you only need to find two to gain a return. Doing so will return 1x your stake.

Special Symbols

Like most online slot machines, Mighty Griffin Megaways also features several special symbols. The first of these is the scatter, which depicts a different griffin on a blue and white shield. These symbols are used to trigger the main bonus game.

Next up is the mystery symbol, which is a magical-looking orb. Whenever these land on the reels, they will transform into other symbols at random, with the exception of the scatter. 

Finally, there’s a wild symbol, designed to look like a spellbook, which can substitute for all other regular symbols to help create wins.


The game’s highest-paying symbols are beautifully detailed, particularly the ring, crown and feather. The game’s stunning backdrop, featuring a castle rising up into the clouds, is another high point. 

During the bonus feature, the color scheme and music shift dramatically, adding to the tension. The animations here are well-executed, and overall, the graphics undoubtedly add to a thoroughly enjoyable experience. 


A small, horizontal reel containing four symbols runs along the top of the grid. This provides you with additional opportunities to create wins. Should you match enough symbols anywhere on the grid, they will disappear, allowing new ones to tumble in and potentially form further wins.

Like most online casino slots these days, this one has a free spins bonus. Match at least three scatters to start the game. But first, you’ll play the Golden Streak feature to determine how many spins you’ll start with.

Here, the reels spin again to collect additional scatters. Each one contains free spins that, when totaled, result in your final free spins tally. Once complete, you can either bank these free spins or gamble to try and win even more.

Once the free spins begin in earnest, a progressive multiplier increases with every cascade. What’s more, five extra spins are awarded if you can pick up three additional scatters. 

Bonuses and Jackpots

Some versions of Mighty Griffin Megaways are linked to the Jackpot Royale network. This series of jackpot slots deducts a tiny fraction of every player’s bet as a contribution to the three different prize pools. As such, the possible rewards grow all the time. However, there are always three guaranteed amounts up for grabs, which are as follows:

  • Jackpot Royale: $70,000.
  • Major Pot: $7,500.
  • Maxi Pot: $2,000.

On average, the Jackpot Royale pool pays approximately $175,000. To win this, you’ll need to find five Jackpot Royale symbols and trigger a special bonus game. This happens completely at random, and there’s nothing in particular you can do to shoot for it.

Once the bonus game starts, you must collect 15 Jackpot Royale symbols for a shot at the progressive jackpots. Then, you’ll spin a lucky wheel containing several multiplier values alongside the three progressive prizes. Wherever the wheel lands, that will be your ultimate reward.

Similar Games

If you found Mighty Griffin Megaways entertaining, you’ll probably love playing these similar casino games online, too.

  • Griffin’s Throne: This August 2020 release by IGT is also based on the mythological beast. A solid 96.05% RTP awaits, along with a maximum possible win of 3,750x.
  • Fairy Fantasy Exotic Wilds: A different kind of mythical being stars in this Armadillo Studios title. But these fairies are only slightly less menacing than the griffin.
  • Age of Beasts Infinity Reels: ReelPlay ventures into the world of mythological creatures with this highly volatile 95.57% RTP slot.

Play Casino Online at BetMGM Today

Enjoyed reading this Mighty Griffin Megaways review? Be sure to register at BetMGM today and give it a try. 

It’s also possible to experience the game in a free-to-play demo mode first. This is the best way to ensure responsible gambling by safely learning the rules before risking any real money.

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Our BetMGM editors and authors are sports experts with a wealth of knowledge of the sports industry at all levels. Their coverage includes sports news, previews and predictions, fun facts, and betting.