Gronk's Gems


They have a cave troll! Meet the beefy but friendly, gem-collecting cave troll Gronk! Gronk's Gems is played on a 6x6 grid, has a cascading win mechanic that removes winning cluster and features a max win of 7,500x!


Charged Symbols & Epic Gem

Symbol wins make that symbol type enter a charged state and begin to glow. Charged symbol types are also shown in the “charge bar” display above the grid. Symbols retain their charged state until the end of the current spin.

The Epic Gem scatter symbol may drop in on cascades after winning symbols are removed and will activate after the grid has settled, when no more wins or cascades occur. When the Epic Gem activates, all charged symbols on the grid are transformed into the highest paying charged symbol!

All charged symbols are then absorbed by the Epic Gem and counted as if they were one winning cluster. The Epic Gem itself counts as 4 symbols, so that it will always be able to create a minimum win of 5 symbols so long as there is at least one charged symbol on the grid. Once all charged symbols are absorbed, the Epic Gem explodes and triggers another cascade!

Symbols do not have a charged state during the Gem Hoarder game mode.

Gronk's Treasure

Land 3 Gronk’s Head scatter symbols at the same time in the base game to trigger this bonus game, which awards 10 free spins! This feature has a higher chance to land Epic Gem symbols than the base game!

Gem Hoarder

Land 3 Gem Bag scatter symbols at the same time in the base game to trigger this bonus game, which has 5 refilling free spins. Landing 3 Gem Bag symbols at the same time during the feature refills all 5 free spins!

This feature has a progressive global multiplier that increases whenever winning symbols are removed! The multiplier value is increased by an amount equal to the number of removed symbols. Any winning cluster that connects to the special X-Gem symbol is multiplied by the global multiplier! If more than one X-Gem symbol connect to the same winning cluster, the global multiplier will be applied once for each connecting X-Gem symbol!


The Epic Gem does not appear in the Gem Hoarder game mode.

The X-Gem symbol counts as a wild symbol, substituting all other paying symbols, and appears only in the Gem Hoarder game mode.

The symbol payouts displayed above reflect the currently selected bet level. The theoretical payout for this game is 94.42%. The RTP was calculated by simulating 10,000,000,000 rounds.


The specified requirements for a winning combination in the base game are also used during bonus features or free spins play unless otherwise stated. Each wager is eligible for all winning combinations unless otherwise stated.

Land 5 or more connecting symbols of the same kind anywhere on the grid to get a winning combination.

After every win the winning symbols are removed and new ones drop in. This continues until there are no more new wins on the reels.


This game offers the possibility to purchase the special feature(s) directly from the main game by pressing the BUY BONUS button.

This game offers the FeatureSpins™ buy option. When FeatureSpins™ are activated, each spin guarantees certain features and costs a set amount, based on your current bet level. FeatureSpins™ remain active until you disable them by clicking the DISABLE button.

The RTP when buying BONUSHUNT FEATURESPINS™ is 94.41%. For full information about this feature, see the section above.

The RTP when buying GRONK'S TREASURE is 94.29%. For full information about this feature, see the section above.

The RTP when buying GEM HOARDER is 94.26%. For full information about this feature, see the section above.



Your current balance is shown in the BALANCE display. Balance, bets and winnings are presented in the player’s chosen currency.


The current bet level is shown in the BET display. Change the bet by clicking on the arrows and choosing the bet level of your choice.

The allowed bet levels for this game are between €0.10 and €30.00. Feature buys can exceed this limit.


The game is started by pressing the SPIN symbol button. The spacebar on the keyboard can also be used to initiate a spin.


Winnings and winning combinations are paid according to the paytable. Multiple wins in one round are added together and the total round win will be displayed in the WIN field (to the right of BALANCE). Separate wins in a winning combination will be displayed during the win presentation. Symbol payouts are displayed in the paytable and reflect the current bet configuration. Only the highest win per winning way is paid.


The maximum achievable win in this game is 7,500 multiplied with the current bet level. The maximum win may be achieved by triggering specific combinations and/or features.


In Free spins the total win for each spin is shown in the WIN field while the accumulating win for all free spins is shown in the TOTAL WIN field next to the number of remaining spins.


Using Autoplay will let you play a number of game rounds automatically. Press the AUTOPLAY button and choose a number of game rounds to initiate this feature. The remaining number of spins is displayed. Autoplay is stopped by pressing the STOP button.


The Advanced Autoplay settings allow the player to set number of plays, total session lost limit and single win limit. The autoplay feature will stop when any of the selected limits are exceeded.


The Turbo Play functionality is used to get the fastest game round possible (not available on all operators and jurisdictions). Turbo Play is activated from the menu.


In addition to the features described here, the bar on the bottom of the game screen displays the current balance in the chosen currency, the amount paid if a win occurs, and the amount bet on the last/current proposition.


In the event of disconnection, a previously started round that has been interrupted may be resumed immediately by starting the game again. The results of a completed round (where display of the visual result was interrupted) will only be re-displayed within the game for winning rounds, but all game rounds may be reviewed in Game History. Any amount wagered on an unfinished game will remain paused until you either complete the game or the game is void as a result of account inactivity or system maintenance. When an unfinished game is void, your bet will be refunded to your account. Any awards earned on an unfinished round will not be credited unless you resume and complete the game. Winnings on unfinished game rounds where the player cannot further influence the outcome of the game will be automatically credited to the player’s account after 1 day. Game rounds will never be affected by unforeseen external errors due to hardware, bandwidth, network errors or similar. Game rounds will be either stored and completed by the player at a later time or they will be closed and the wager will be refunded to the player. If an incomplete game round has not been resumed within 30 days, the round will be rolled back and the wager will be refunded.


The result of a completed game may be viewed in Game History immediately after closing the game window. Results of unfinished games are not displayed in Game History.


- Misuse or malfunction voids all pays and plays.
- Any visual representation of a physical device (a reel, a wheel of fortune or similar) does not represent a “real” physical device and the probabilities of it stopping on any particular position is determined by the game’s random number generator, and not the number of positions on each device.

Last modification date: 2/21/2023