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Gronk's Gems Slot - Review, Free & Demo Play

Cave trolls can have a frightening reputation in fantasy stories like The Fellowship of the Ring, but Hacksaw Gaming is challenging that notion with its online slot, Gronk's Gems. This game was released on 08/12/2022, and takes a cave troll friendly approach, introducing us to little Gronk and his charming personality. Gronk's Gems offers a cluster payout grid with two bonus rounds known as Gronk's Treasure and Gems Hoarder, so players can expect plenty of fun while playing. In this way, Hacksaw Gaming creates an exciting combination of friendliness and power that reimagines the classic image of cave trolls.

Take an inside look at this slot thanks to our review and discover the features that make it unique, such as RTP ratios, volatility levels, and more. Also, check out the free demo to learn more about how you can play. And for the bravest, we've compiled a list of the best casinos where you can play this slot for real money for extra bonuses.

Gronk's Gems Free Play

Gronk's Gems logo
Hacksaw Gaming Release Date: 08.12.2022
Rating by Ella Houghton
User’s Rating:
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Gronk's Gems
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Best Casinos to Play Gronk's Gems for Real Money

When it comes to playing Gronk's Gems for real money, you have to make sure you're getting the most out of it. After careful research and consideration, we've chosen the best casinos with this exciting and juicy slot game. In addition, these selected casinos also offer other elements such as fair play, customer support, various bonuses, and secure payments with SSL encryption technology to protect players' financial data and winnings – so you don't have to worry about security when playing this online slot for real money. With all these aspects in mind, players can find their luck in absolute comfort and luxury.

General information about Gronk's Gems slot

Release Date:
Max. win:
Bonus game:
Free spins:
Scatter Symbol:
Wild symbol:
Symbol Stacked:
Jackpot Game:
Slot lines:
Cluster pays
Slot reels:
Stakes range (€/£/$):
0.1 to 100
Slot Theme:
Gems, fantasy

How to Play

Gronk's Gems offers an intuitive and captivating gaming experience, with all main controls conveniently located at the bottom of your screen. Below are the key steps to start this exciting game:

  1. Determine the size of the game bet based on your budget in the “Bet” field
  2. Press the spin button to start the reels, or activate from 10 to 1,000 automatic spins in the “Aytoply” field
  3. To win in Gronk's Gems, a cluster must contain at least five of the same symbols connected horizontally or vertically
  4. Winning clusters fly off the playing field and are replaced by symbols falling from above. This continues until new winning clusters appear
  5. The winnings will be automatically credited to your game account and displayed in the “Win” field
  6. Your game balance will be displayed in the “Balance” field. Next to this field, there will be a menu item, which allows you to get more information about the game

The slot has a 6x6 game structure and also offers a base bet level that starts at €0.10 and goes up to €100 per spin. In addition, the presence of a bonus buy can attract players who want to increase the excitement and potentially get bigger rewards.

Gronk's Gems RTP and Volatility

With an RTP ratio of 96.24% and medium volatility, the slot machine can offer quite generous gameplay.

An RTP ratio of 96.24% ensures that players can potentially expect a solid return on their investment in the long run. This means that out of every €100 staked in the game, approximately 96.24% will be returned in the form of winnings. This indicator increases during some features.

Volatility refers to how often a slot machine pays out winnings and how often those winnings are large. In the case of Gronk's Gems, it has been classified as a medium volatility slot machine. This means that players can expect an even mix of both small and large winnings during play. It also means that they won't have to wait too long between spins before they start receiving payouts.

Overall, Gronk's Gems offers players a solid gaming experience thanks to its generous RTP odds and medium volatility levels, allowing them to enjoy a balance between potential payouts and winning frequency.


Gronk's Gems

Gronk's Gems slot is an exciting, action-packed game that immerses players in a world of colorful gems and friendly trolls. The graphics are bright and detailed, and the cartoonish art style creates a whimsical atmosphere. The player enters a magical forest where Gronk, the protector of his beloved gems, stands beloved gems.

The background melody is upbeat and perfectly captures the nighttime flavor of the fairy tale forest. It also highlights some tense moments where big winnings are potentially possible. Along with the sound effects, these sound elements contribute to making Gronk's Gems an exciting entertainment experience for all players. The design of the game is done with the utmost care and attention: each symbol is perfectly placed on the screen, which creates a balanced color palette. All this creates an aesthetically pleasing design that takes players on an unforgettable adventure full of surprises!

All game symbols are gems, starting with four uncut green, blue, purple, and yellow stones that have payouts from 0.2x to 200x bet per line. The four more valuable game symbols are a blue octagonal stone, a purple hexagonal stone, a star, and a diamond, which can bring you from 0.5x to 1,500x bet per line.

Gronk s Gems slot paytable

Mobile Compatibility

Gronk s Gems slot mobile

Playing Gronk's Gems slot on mobile devices is like a dream come true for slot fans! This is highly engaging online slot is optimized to provide an excellent gaming experience on any device you use. Using HTML5 technology, this contemporary game ensures amazing visuals, smooth animations, and the same gameplay you'd get from the desktop version. Being compatible with almost all smartphone devices, this game allows you to stay connected and enjoy its exciting bonus rounds and features.

About Hacksaw Gaming

Hacksaw Gaming has quickly taken its place among the established iGaming providers, creating over 40 scratch cards and video slots in a short period of time since their founding in September 2018.

As a “mobile-first” game developer, they know exactly how to provide the best user experience for players who prefer mobile gambling. They've already received recognition in the form of several awards, which is no small feat given their relative youth in the industry. For example, Hacksaw Gaming won "Best Instant Payout Products" at the Malta Gaming Awards 2019, and then, at the Casino Beats Game Developer Awards 2022, held at the Hilton Hotel in Malta, won in the "Game Studio that exceeds expectations" category.

But that's not all, the company can also offer great back-office services such as player search and marketing tools that make Hacksaw Gaming full gaming package a must for any casino operator or platform.

Bonus Rounds & Free Spins


Charged Symbols & Epic Gem

Winning symbols in the game cause other symbols of the same type to glow, going into what is called a charged state. Charged symbols are tracked by the bar above the playing reels and remain charged until the end of the current spin. Epic Gem symbols can now appear on the playing field after winning game symbols have been cascaded away.

When wins or cascades no longer appear on the reels, the Epic Gem is activated, turning all charged symbols in sight into the highest-paying charged symbol. The charged game symbols are then absorbed by the Epic Gem and count as one winning cluster. The Epic Gem always counts for 4 symbols, so if there is at least one Charged symbol in the field of view, a winning cluster is obtained after absorption. When all charged symbols are absorbed, the Epic Gem will explode to activate the cascade.

In Gem Hoarder mode, the symbols will have no charged state.

Gronk's Treasure

An accumulation of 3 Gronk's Head scatters in one spin in the base game gives 10 free spins. During free spins, Epic Gem symbols are more likely to appear than in the base game.

Gronk s Gems slot Gronk s Treasure

Gem Hoarder

Collected 3 Scatters Gem Bag in the base game triggers the bonus round. Here the player gets 5 spins, and a roll of 3 Gem Bags at once returns the spin counter to 5. If winning symbols appear during the Gem Hoarder, each symbol increases the global multiplier by +1. If winning clusters are connected to a special X-Gem symbol, the global multiplier is applied to total winnings in the round. If more than one X-Gem is connected to the winning, the global multiplier is applied once for each connected X-Gem.

Buy Bonus

Players can purchase three different features, each of which is rated highly volatile. The following purchase options are available:

  • Bonushunt Featurespins – 3x the bet that increases five times the probability of activating one of the bonus games on each spin
  • Gronks's Treasure – 110x the bet to purchase 10 free spins
  • Gem Hoarder – 200x the bet to purchase this particular bonus round

Gronk's Gems Demo Play

If you're curious about what Gronk's Gems slot has to offer, but not ready for the real thing yet, have no fear! The Demo Play page provides an opportunity to explore the game and learn how it works before playing with your own money. On this page, users can experience the full version of this fun-filled slot – but virtually and risk-free. Whether you are a beginning gambler or an experienced one, Gronk's Gems Demo Play offers everyone a chance to sharpen their skills at their own pace. Give it a try and discover why so many people love this interactive slot game!

Max Win


Players can experience thrilling rewards of up to 7,500x their stake with the exciting bonus features available.

For maximum winnings in the Gronk's Gems slot game, players can take advantage of the exciting bonus features of Gronk's Treasure or Gem Hoarder. In addition to these bonus features, Gronk's Gems also offers players the opportunity to purchase bonus rounds. Players who purchase bonus rounds will be able to persevere through losses and greatly increase their winning potential.

What's more, by purchasing bonus rounds, players can increase their reward up to 7,500x their bet! This is an incredible opportunity for both high rollers and those seeking big payouts.

Gronk's Gems Video Review

Gronk's Gems Slot Review | Free Play video preview
✅ Try this slot for free on our website - https://slotsjudge.com/online-slots/gronk-s-gems/\n\nHi everyone! In this video we’ll show you bonus game in Gronk's Gems from Hacksaw Gaming. The slot machine has average volatility and RTP of 96.2%. The playing field consists of 6 reels and 6 rows, the minimum bet starts with $0.10, and the maximum bet reaches $100. By the way, the maximum winnings are 7'500x of the bet size.The main features of the machine are Free Spins and Scatter Symbols.\n\nWrite in the comments, have you played Gronk's Gems from Hacksaw Gaming and how do you like the winnings presented in this video!\n\nNo links used during live stream or in the description are transaction links.\n18+ | Play Responsibly | Begambleaware.org.\n\n#slots #onlinecasino #bigwin

Overall Rating


In conclusion, Gronk's Gems by Hacksaw Gaming is an exciting and addictive online slot game. Thanks to the many bonus features offered, such as the Epic Gem feature, Gronk's Treasure, and Gem Hoarder, the slot can provide players with hours of entertainment. The unique combination of features presented in Gronk's Gems sets it apart from other slot games on the market. The beautiful design and animations combined with the intense gameplay create an incredibly immersive experience for any player looking for something out of the ordinary.

Overall, Gronk's Gems is definitely worth checking out if you're looking for a high-quality online casino experience from one of the top providers in the industry – Hacksaw Gaming!

Free spins
Bonus buy option
Attractive game design
There is no Wild symbol

Gronk's Gems Slot - FAQ

What is the Return to Player (RTP) rate of Gronk's Gems?

This slot has an RTP coefficient of 96.24%, which is quite an attractive indicator among online slots.

What is the most valuable symbol in Gronk's Gems?

The most valuable symbol in this slot is the orange diamond, which, for a combination of 36+ of these symbols, can pay out 1,500x bet per line.

Do I need to make a deposit to play this game?

If you just want to test the game, you don't need to make a deposit, you can start playing with the free demo version, which is available on this page.

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Ella Houghton
Ella Houghton
Expert in: News, Blog, Slot reviews
Ella is a professional content-writer with 8 years of experience in the casino sphere. She has broad knowledge of gambling related themes and is happy to share this with Slotsjudge.
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