Gronk’s Gems Slot Review

3.5/5
Based on our expert’s review. Reviewed by
Hacksaw Gaming Slots
Review by
Chris Taylor
Updated: 08/12/2022
Review by
Chris Taylor
Updated: 08/12/2022

Join a friendly, gem-collecting cave troll in the Gronk’s Gems slot from Hacksaw Gaming. Played on a 6×6 grid with Cluster Pays, there are cascades with charging symbols that come alive with the Epic Gem scatter lands. With 2 free spins features, the Gem Hoarder feature comes with a progressive multiplier that increases for each removed symbol. That multiplier applies to winning clusters that have the X-Gem symbol attached. This can lead to 7,500 x bet max wins. With a 96.24% RTP rate, find out more in our Gronk’s Gems review.

Max Win
7,500 x bet
Play
T&Cs Apply

18+. New customers. Opt-in required. 20 Bonus Spins on “Sahara Riches Cash Collect” at 10p per spin and 100% Deposit Bonus up to £100 on first deposit (payment method and play restrictions apply). Min. deposit £10. 30x wagering for Bonus Spins and Deposit Bonus (game weighting applies). Max. £5/spin or £0.50/line. 30 days expiry. Please gamble responsibly • www.begambleaware.org #ad

Provider
Hacksaw Gaming
Type of Slot
Grid Slot
Theme
Trolls
Reels
6x6
Paylines
Cluster Pays
Stakes Range
10p to £100
Bonus Features
Yes (5)
Free Spins/Multiplier
5-Unlimited/Unlimited
Max Win
7,500 x
RTP
96.24%
Volatility
Medium (3/5)

Gronk’s Gems Demo

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T&Cs Apply 18+. New customers. Opt-in required. 20 Bonus Spins on “Sahara Riches Cash Collect” at 10p per spin and 100% Deposit Bonus up to £100 on first deposit (payment method and play restrictions apply). Min. deposit £10. 30x wagering for Bonus Spins and Deposit Bonus (game weighting applies). Max. £5/spin or £0.50/line. 30 days expiry. Please gamble responsibly • www.begambleaware.org #ad
18plus uk-gambling-commission online-slot-co-uk-logo agechecked-verification-provider
T&Cs Apply 18+. New customers. Opt-in required. 20 Bonus Spins on “Sahara Riches Cash Collect” at 10p per spin and 100% Deposit Bonus up to £100 on first deposit (payment method and play restrictions apply). Min. deposit £10. 30x wagering for Bonus Spins and Deposit Bonus (game weighting applies). Max. £5/spin or £0.50/line. 30 days expiry. Please gamble responsibly • www.begambleaware.org #ad

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Gronk’s Gems Slot RTP, Details & Wager Limits

Reels/Paylines: 6×6 + Cluster Pays

Stakes Range: 10p to £100 per spin

RTP: 96.24%

Max Win: 7,500 x bet per spin

The Gronk’s Gems slot is played on a 6×6 grid and uses a Cluster Pays mechanic. Winning combinations or clusters are formed when 5 or more matching symbols appear adjacent to one another (in a cluster). The more symbols in a cluster, the bigger the payout. For more information on this type of game, check out our guide to Grid Slots.

Bet options vary from 10p to £100 per spin. This is pretty much the standard stake range offered by Hacksaw Gaming slots. In the Bet section, use the up and down arrows to change accordingly. All payouts appearing in the Paytable will change when you adjust your bet size.

Outside the UK, there is an Autoplay function where up to 1,000 autospins can be selected alongside loss and single win limits. For quicker spin speed, you have Turbo and Super Turbo modes (again for non UK players). They can be selected by clicking on the 3 lines icon (bottom left-hand corner).

The Gronk’s Gems RTP is 96.24% which is higher than the online slots return average of 96%. You may find lower RTP versions at some casinos so it’s best you check which version you’re playing. Volatility wise, it’s in the medium bracket and ranked as 3/5.

Lastly, the Gronk’s Gems slot comes with max wins of 7,500 x your total bet. The best chance of winning big will come from the Gem Hoarder feature where there is a progressive multiplier.

Theme – join a friendly, gem-collecting cave troll

Theme: Trolls

High Value Symbol: Orange Diamond Gem

Compatibility: Mobile, Tablet, Desktop

gronks-gems-slot-base-game

With a trolls theme, the Gronk’s Gem slot is based on a beefy but friendly, gem-collecting cave troll called Gronk. He rather looks like the a cross between to trolls in Middle Earth from The Lord of the Rings and Panthro from the Thundercats cartoon series.

Set in a gloomy forest, blue dominates the colour scheme. With Gronk to the left of the grid, you’ll see brightly-lit symbols. They include green, blue, pink and yellow uncut gems as well as blue octagon, purple hexagon, gold star and orange diamond gems. The orange diamond gem symbol is the highest paying with 36+ in a cluster awarding 1,500 x your total bet.

Unusually, there are no wild symbols. You will, however, see Gem Bag, Gronk’s Head and Epic Gem Scatter symbols which are described in more details below.

Symbol Payouts/Info
gronks-gems-slot-green-uncut-gem-symbolGreen Uncut Gem 36+ pays 150 x bet
gronks-gems-slot-blue-uncut-gem-symbolBlue Uncut Gem 36+ pays 150 x bet
gronks-gems-slot-pink-uncut-gem-symbolPink Uncut Gem 36+ pays 200 x bet
gronks-gems-slot-yellow-uncut-gem-symbolYellow Uncut Gem 36+ pays 200 x bet
gronks-gems-slot-blue-octagon-gem-symbolBlue Octagon Gem 36+ pays 300 x bet
gronks-gems-slot-purple-hexagon-gem-symbolPurple Hexagon Gem 36+ pays 400 x bet
gronks-gems-slot-gold-star-gem-symbolGold Star Gem 36+ pays 500 x bet
gronks-gems-slot-orange-diamond-gem-symbolOrange Diamond Gem 36+ pays 1,500 x bet
gronks-gems-slot-epic-gem-scatter-symbolEpic Gem Scatter Appears during Charged Symbols feature
gronks-gems-slot-gem-bag-scatter-symbolGem Bag Scatter 3 triggers Gronk's Treasure feature
gronks-gems-slot-gronks-head-scatter-symbolGronk's Head Scatter 3 triggers Gem Hoarder feature
gronks-gems-slot-x-gem-symbolX-Gem Only appears during Gem Hoarder feature

Gronk’s Gems Mobile

gronks-gems-mobile-slot

Produced using HTML5 technology, the Gronk’s Gem slot is optimised for mobile, tablet, PC and/or laptop devices. With crystal-clear, high-definition graphics and animations, smartphone players can enjoy this troll adventure on iOS, Android and Windows mobile devices.

Gronk’s Gems Bonus Features

The Gronk’s Gems slot comes with 5 bonus features. With cascades and charged symbols, there are 2 free spins features. In one, there’s an increased changed of Epic Gem scatters and the other has a progressive multiplier than applies from an X-Gem symbol is next to a winning cluster.

Cascade feature

When a winning combination is created, the Cascade feature comes into play. Winning symbols in the cluster explode with new symbols vacating the empty spaces. Giving you another chance to win, the cascades continue as long as new winning clusters are created.

Charged Symbols feature

When you land a winning cluster, the winning symbol type will enter a charged state and glow. These charged symbols will be shown in the ‘Change Bar’ above the grid. The symbols retain their charged state until the end of the current spin. Look out for the Epic Gem Scatter symbol dropping in on cascades.

When no more wins occurs, the Epic Gem Scatter is activated. The Epic Gem Scatter transforms all charged symbols into the highest value charged symbol. All charged symbols are then absorbed by the Epic Gem and counted as if they were 1 winning cluster.

Counting as 4 symbols, the Epic Gem Scatter will always create a winning cluster as long as there is 1 charged symbol on the grid. Once the Epic Gem absorbs charged symbols, it explodes and gives you another cascade. This is known as the Charged Symbols feature.

Gronk’s Treasure feature

The Gronk’s Treasure feature is activated when 3 Gronk’s Head Scatter symbols land simultaneously on a base game spin. With 10 free spins awarded, there’s a higher chance of landing Epic Gem Scatters than the base game. This means you will trigger the Charged Symbols feature more frequently.

Gem Hoarder feature

gronks-gems-slot-gem-hoarder-feature

Landing 3 Gronk’s Head Scatter symbols on a base game spin will trigger the Gem Hoarder feature. You are then rewarded with 5 refilling free spins. If you land 3 Gem Bag symbols on the same free spin, you will refill all 5 free spins.

Importantly, there is a progressive multiplier that increases whenever winning symbols are removed. The multiplier value increases by the amount equal to the number of removed symbols. For example, the multiplier rises by 5 if 5 winning symbols are removed.

Any winning cluster that connects to the special X-Gem symbol is multiplier by the progressive multiplier. If more than 1 X-Gem symbol connects to the same winning cluster, the progressive multiplier is applied once for each connecting X-Gem symbol.

Buy Bonus feature

Non UK slots players come with a Buy Bonus feature. Activated by clicking on the pink ‘Buy Bonus’ button in the bottom left-hand corner, you can buy your way into various bonus features. The Gronk’s Gems slot has 3 options with the RTP changing as a result:

Option Description Cost RTP
Bonushunt FeatureSpins Each spin is 5 times more likely to trigger a feature 3 x bet 96.38%
Gronk’s Treasure Entry to Gronk’s Treasure feature 110 x bet 96.3
Gem Hoarder Entry to Gem Hoarder feature 200 x bet 96.34

Gronk’s Gems Review Summary – progressive multiplier key to landing the troll’s treasure

Ratings
Theme & Symbols








Sounds & Music








Bonus Features








RTP (96.24%)








Max Win (7,500 x)








Originality








Aesthetically, the Gronk’s Gem slot is very Hacksaw Gaming: superb, crystal-clear graphics and animations with a slightly dark feel. The loveable troll isn’t scary in the slightest which helps I think. In terms of the symbols, they do stand out on the grid.

When it comes to the gameplay, there are cascades and charged symbols which come to life when an Epic Gem scatter lands. This sees the Epic Gem Scatter absorbing charged symbols for a guaranteed win and another spin/cascade.

Then there are 2 free spins features with the Gronk’s Treasure feature seeing more Epic Gem Scatters land than in the base game. It’s all about the Gem Hoarder feature where the progressive multiplier increases proportionally to the number of winning symbols removed. Coupled with the X-Gem symbol, this can lead to a huge overall multiplier and ultimately wins of up to 7,500 x bet. Expect plenty of retriggers as 3 X-Gem symbols will land fairly frequently.

Neatly designed, the Gronk’s Gem slot is a decent grid game from Hacksaw Gaming. It may not be Jammin’ Jars 2 (Push Gaming) or The Border (Nolimit City), but it’s sure worth playing.

If you like grid slots, Hacksaw Gaming’s very own Hand of Anubis is their best grid slot to date. Set in the underworld, it comes with free spins, multipliers up to 9,999x, refilling free spins with special blocks and increased reel multipliers as well as 10,000 x bet max wins.

Pros
  • 7,500 x bet max wins
  • Progressive multiplier in Gem Hoarder feature
  • Increased Epic Gem scatters in Gronk’s Treasure feature
Cons
  • Not as high paying as other Hacksaw slots

Gronk’s Gems FAQs

What is the Gronk’s Gems RTP?

The Gronk’s Gems RTP rate is 96.24% which is above the 96% online slot game average return rate. Medium variance, the volatility is ranked as 3/5 by Hacksaw Gaming.

What is the Gronk’s Gems max win?

The max win per spin is 7,500 x your total bet. Key to the bigger wins is the progressive multiplier in the Gem Hoarder feature which is applied when the X-Gem symbol is attached to a winning cluster.

Are there any Gronk’s Gems free spins?

Yes, the Gronk’s Gem slot comes with 2 free spins features. 1 comes with more Epic Gem scatters and the Gem Hoarder feature has a progressive multiplier that is applied to wins when an X-Gem symbol is attached to it.

Is there a Gronk’s Gems demo?

Yes, the Gronk’s Gems demo can be played at Online-Slot.co.uk for free. Join the friendly troll on mobile, tablet, laptop and/or PC devices.

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