Gronk's Gems

Q: What is the RTP of Gronk's Gems?

The official top-tier RTP is 96.24%. Reduced versions exist at 94.42% / 92.20% / 88.30% depending on the casino. Check via the 'i' info button in-game.

8.7/10

Release August 2023· Updated October 2026

Caveman cluster pays + Charged Symbols + 2 Free Spins modes - RTP 96.24%, max win 7,500x

RTP

96.24%

Volatility

Medium

Max Win

7 500x

Grid

6x6

Bonus Buy

Yes

Cluster PaysCascading WinsCharged SymbolsEpic GemsGronk's Treasure FSGem Hoarder FS

8.7

BetsRank Verdict

Our read of the game, based on the data the studio publishes

Caveman theme from Hacksaw Gaming, released August 2023. RTP 96.24% is top-tier (reduced versions exist at 94%, 92%, 88%). Max win 7,500x. Volatility 3/5, medium and accessible. 6x6 cluster pays format with cascading wins. Charged Symbols collect multipliers and Epic Gems trigger the bonus. Two Free Spins modes: Gronk's Treasure and Gem Hoarder.

Strengths

+Medium 3/5 volatility, accessible
+Charged Symbols + Epic Gems combo
+Two distinct Free Spins modes
+6x6 cascading cluster pays

To consider

−7,500x max win is light next to flagship titles
−Caveman theme is a bit of a gimmick
−60x-300x bonus buy range is standard, nothing special

About Gronk's Gems

Gronk's Gems (August 2023) explores a caveman/prehistoric theme from Hacksaw Gaming - Gronk is the caveman hero who collects magic gems. Structure: 6x6 grid, cluster pays - 5+ matching adjacent symbols create a win, with classic cascading wins. Bets range from €0.10 to €100. Top-tier RTP of 96.24% (reduced versions exist at 94.42%, 92.20% and 88.30% depending on the casino). Medium volatility (3/5) - accessible for most bankrolls. The signature mechanic is Charged Symbols. During cascades, certain symbols become 'charged' and collect progressive multipliers. Epic Gems are the premium symbols that can trigger the bonus games. Two distinct Free Spins modes are available: Gronk's Treasure (focused on building progressive multipliers with Charged Symbols) and Gem Hoarder (focused on collecting Epic Gems for mega prizes). Bonus buy is available from 60x to 300x the stake depending on the target bonus. The 7,500x max win is reached mainly through a combination of saturated Charged Symbols and Epic Gems in bonus play.

Key mechanics

▸6x6 cluster pays format (5+ adjacent)
▸Top-tier 96.24% RTP (94/92/88% versions also exist)
▸Medium 3/5 volatility, accessible
▸Cascading wins
▸Charged Symbols (progressive multipliers)
▸Epic Gems (trigger bonus games)
▸Gronk's Treasure Free Spins (multiplier focus)
▸Gem Hoarder Free Spins (collection focus)
▸Bonus buy from 60x to 300x

💰 Bonus Buy: 60x to 300x stake (2 Free Spins modes)

❓Gronk's Gems FAQ

What is the RTP of Gronk's Gems?▾

The official top-tier RTP is 96.

24%. Reduced versions exist at 94. 42% / 92. 20% / 88. 30% depending on the casino. Check via the 'i' info button in-game.

Is Gronk's Gems available at online casinos?▾

Yes - it's available at online casinos that carry Hacksaw Gaming titles.

Charged Symbols vs Epic Gems?▾

Charged Symbols: during cascades, they become 'charged' and collect progressive multipliers.

Epic Gems: premium symbols that can trigger the bonus games (Gronk's Treasure / Gem Hoarder).

Gronk's Treasure vs Gem Hoarder?▾

Treasure focuses on building progressive multipliers with Charged Symbols.

Hoarder focuses on collecting Epic Gems for mega prizes. Two complementary modes.

Who is this slot for?▾

Fans of the caveman/prehistoric theme.

Players who enjoy accessible 3/5 volatility cluster pays. Fans of build-up mechanics (Charged Symbols). A decent 7,500x max win for medium volatility.

Similar slots to discover

Online Casino & Bonus Expert

Last updated: 10/22/2026

Learn more →

Slot sheet last updated on October 22, 2026 · Sources: slotcatalog.com, official studio sites