- All Slots ›
- Hacksaw Gaming ›
- Gronk’s Gems™
Gronk’s Gems (Hacksaw Gaming) – Review & Demo Play
Gronk’s Gems from Hacksaw Gaming play free demo version ▶ Casino Slot Review Gronk’s Gems ✔ Return (RTP) of online slots on July 2026 and play for real money✔
Gronk's Gems: Slot Overview
Gronk's Gems is a cluster-paying grid slot in Hacksaw's Pocketz Series, built for mobile but tidy on desktop as well. It runs on a 6x6 layout with cascading wins and cluster pays formed by 5+ matching symbols. Stakes go from 10p up to £100. The default RTP is 96.24%, and volatility sits at a medium 3/5. Max win is 7,500x. I rate the setup as mid-range Hacksaw: friendly troll, sharp gem maths, and a base game that keeps ticking over between features.
Gronk’s Gems in Casinos:
➡️ New Slot Sites List Updated: July 2026
➡️ Casinos are licensed and tested by independent gambling auditors eCOGRA ✅ iTech Labs ✅ Gaming Laboratories International
!!! Remember the rules of the Safe Gambling & Responsible Gaming – Casinos can cause Gambling addiction !!!
Pyramid Spin
- Good selection of games
- Casino accepts players from many countries
- Huge selection of game providers
- Live chat support is available 24/7
Slots Charm
- Good selection of games
- Casino accepts players from many countries
- Huge selection of game providers
- Live chat support is available 24/7
Captain Marlin
- Good selection of games
- Casino accepts players from many countries
- Huge selection of game providers
- Live chat support is available 24/7
Libra Spins
- Good selection of games
- Casino accepts players from many countries
- Huge selection of game providers
- Live chat support is available 24/7
Euphoriawins
- Good selection of games
- Casino accepts players from many countries
- Huge selection of game providers
- Live chat support is available 24/7
Raptorwins
- Good selection of games
- Casino accepts players from many countries
- Huge selection of game providers
- Live chat support is available 24/7
Scarabwins
- Good selection of games
- Casino accepts players from many countries
- Huge selection of game providers
- Live chat support is available 24/7
Gronk's Gems Slot Features
Wins charge matching symbols, making them glow and appear on a charge bar above the grid. After cascades, the Epic Gem can drop. When the grid settles, it activates, transforming all charged symbols into the highest-paying charged symbol. The Epic Gem then absorbs them and counts as one winning cluster. It always counts as 4 symbols, so a single charged symbol in view is enough to form a win. After absorption, it explodes and triggers another cascade.
Three Gronk's Head scatters trigger Gronk's Treasure for 10 free spins, with a higher chance to land Epic Gems. Three Gem Bag scatters trigger Gem Hoarder with 5 refilling free spins; landing 3 Gem Bags at once refills to 5. In Gem Hoarder, the charged state is off. Each removed winning symbol increases the global multiplier by an amount equal to the number removed. Any cluster connected to an X-Gem gets multiplied, once per connected X-Gem.
Where available, the Buy Bonus menu offers Bonushunt Featurespins at 3x the bet for five times the chance to trigger a bonus, Gronk's Treasure at 110x, and Gem Hoarder at 200x. All buys are labelled and rated highly volatile, and the choice can affect volatility. This menu is not in the UK for sure, so I played it straight in regulated markets and used the buys only where jurisdiction allowed.
Special Symbols in Gronk's Gems
The Epic Gem is a feature symbol that does not appear during Gem Hoarder. The X-Gem acts as a wild and substitutes only in Gem Hoarder, where it also connects wins to the global multiplier. Gronk's Head is the scatter for Gronk's Treasure, and the Gem Bag is the scatter for Gem Hoarder. There are no wilds in the base game, so the engine leans on the charged state and Epic Gem absorption to create the bigger clusters.
Gronk’s Gems Symbols and Paytable
| Symbol | Quantity | Payout |
|---|---|---|
 |
36+ | x1500 |
| 31+ | x500 | |
| 26+ | x400 | |
| 7+ | x15 | |
| 6 | x5 | |
| 5 | x1.5 | |
 |
36+ | x500 |
| 31+ | x300 | |
| 26+ | x200 | |
| 7+ | x10 | |
| 6 | x3 | |
| 5 | x1 | |
 |
36+ | x400 |
| 31+ | x200 | |
| 26+ | x150 | |
| 7+ | x5 | |
| 6 | x2 | |
| 5 | x0.7 | |
 |
36+ | x300 |
| 31+ | x150 | |
| 26+ | x100 | |
| 7+ | x3.5 | |
| 6 | x1.5 | |
| 5 | x0.5 | |
 |
36+ | x200 |
| 31+ | x100 | |
| 26+ | x75 | |
| 7+ | x2.5 | |
| 6 | x1 | |
| 5 | x0.3 | |
 |
36+ | x200 |
| 31+ | x100 | |
| 26+ | x75 | |
| 7+ | x2.5 | |
| 6 | x1 | |
| 5 | x0.3 | |
 |
36+ | x150 |
| 31+ | x75 | |
| 26+ | x50 | |
| 7+ | x1.5 | |
| 6 | x0.5 | |
| 5 | x0.2 | |
 |
36+ | x150 |
| 31+ | x75 | |
| 26+ | x50 | |
| 7+ | x1.5 | |
| 6 | x0.5 | |
| 5 | x0.2 | |
 | Scatter | |
Gronk's Gems Symbols and Paytable
You win by landing 5 to 36+ matching symbols in a cluster, connected horizontally or vertically anywhere on the 6x6 grid. Five-of-a-kind pays between 0.2x and 1.5x your bet, while clusters of 36+ pay between 150x and 1,500x. Winning clusters are removed, new symbols drop, and cascades continue until no new cluster forms. This cycle pairs well with the Epic Gem, which can turn modest boards into upgraded clusters after the grid settles.
The low pays are rough, half-gem shapes in green, blue, purple, and yellow. The higher pays are a blue octagonal gem, a purple hexagonal gem, a star, and a diamond, with the diamond topping the table. In the base and Gronk's Treasure, there are no wilds. In Gem Hoarder, the X-Gem appears as a wild and links wins to the global multiplier. The paytable also reflects adjustable RTP ranges across some sites, so I always check the info panel.
Useful guides
Free Spins No Deposit Not on GamStop (July 2026): Real Value Explained
How no deposit free spins at casinos not on GamStop really work: spin value maths, wagering and caps, the slots they run on, and how our team claims and tests them.
No Deposit Bonus Not on GamStop (July 2026): Free Spins & Cash Offers
Compare 7 tested non GamStop casino no deposit bonus offers: free cash from €5 to €50, 50 free spins, wagering maths and honest KYC facts. Updated July 2026.
Online Slots Sites (July 2026): 25,000+ Free Demos and 7 Tested Casinos
Online slots sites compared: 25,000+ free demos, every slot type from Megaways to Slingo, the new UK stake caps, and the 7 casinos we actually cashed out at.
Gallery of video and screenshots of the game
Other slots from Hacksaw Gaming:
We have 264 slots from the provider Hacksaw Gaming in our database. We recommend you check out other slots from Hacksaw Gaming:
Other Casino Software Providers
We also have slot machines from other casino software providers in our database. Many of them can give you a whole new perspective on slots gambling
References
Our editorial team
All our content is written by our editorial team and checked before publication. We play the games ourselves, verify licences and withdrawal terms, and update every review as soon as something changes.
Under the supervision of Editor-in-Chief Mark Rylance