Gems Bonanza Slot Review

4/5
Based on our expert’s review. Reviewed by
Pragmatic Play Slots: Free Play, Reviews + Casinos
Review by
Chris Taylor
Updated: 18/12/2024
Review by
Chris Taylor
Updated: 18/12/2024

The Gems Bonanza slot is a super volatile jewel-themed game from Pragmatic Play. The action takes place on an 8×8 reel grid and uses a Cluster Pays mechanic. Special coloured markings can appear behind symbols which can in turn deliver an assortment of modifiers. These include transforming wilds, 2×2 symbol blocks, a whole grid clearance, colossal symbols or up to 15 added wilds. Collect winning symbols in a meter. Reach the threshold and you’ll trigger the Gold Fever Progressive feature where all the colour modifiers play out in turn. Look out too for multipliers which can get payouts racing. With 10,000 x bet max wins and a high 96.55% RTP rate, find out more in our Gems Bonanza review.

Max Win
10,000 x bet
Play
T&Cs Apply

New UK certified players | Valid mobile number required, No minimum deposit | 25 Book of Dead spins allocated | 40 times wagering on winnings | Ends 31.03.25 | £5 max bonus stake T&Cs apply #ad

Name
Gems Bonanza
Provider
Pragmatic Play
Type of Slot
Grid Slot
Theme
Aztec
Reels
8x8
Paylines
Cluster Pays
Stakes Range
20p to £100
Bonus Features
Yes (7)
Free Spins/Multiplier
NA/NA
Max Win
10,000 x
RTP
96.55%
Volatility
Very High

Gems Bonanza Demo

18plus uk-gambling-commission online-slot-co-uk-logo agechecked-verification-provider
T&Cs Apply New UK certified players | Valid mobile number required, No minimum deposit | 25 Book of Dead spins allocated | 40 times wagering on winnings | Ends 31.03.25 | £5 max bonus stake T&Cs apply #ad
18plus uk-gambling-commission online-slot-co-uk-logo agechecked-verification-provider
T&Cs Apply New UK certified players | Valid mobile number required, No minimum deposit | 25 Book of Dead spins allocated | 40 times wagering on winnings | Ends 31.03.25 | £5 max bonus stake T&Cs apply #ad

Recommended Casino

Best casinos to play Gems Bonanza slot with real money

Casumo Casino 5/5
100% Deposit Bonus up to £100 + 50 Bonus Spins on Big Bass Bonanza
T&Cs Apply

18+. New customers only. 100% Deposit Bonus up to £100 on the first deposit. 30x wagering on Deposit and Bonus (game weighting applies) + 50 Bonus Spins (Big Bass Bonanza) of £0.10. Min. deposit £20. Play responsibly • T&Cs apply. #ad BeGambleAware.org

SpinYoo 5/5
100% Deposit Bonus of up to £250 + 100 Spins
T&Cs Apply

18+. New players only. Min Dep £20. Max Bonus Bet £5. Offer: 100% Bonus of 1st deposit up to £250 on Slots + 100 Yoo Spins on Starburst, Book of Dead, Fire Joker, Gonzo’s Quest, and Big Bass Bonanza, respectively (first 20 credited immediately upon first deposit, rest credited at 07:00 GMT at 20/day). Spins expire after 23:59 GMT on the day you’re credited. Winnings from each 20 spins capped at £50 & credited as bonus. Bonus funds expire after 30 days, are separate to Cash funds & subject to 35x wagering of bonus + deposit amounts. Only your bonus funds contribute to wagering requirements. Affordability checks apply.. Full Terms Apply. GambleAware.org #ad 

Jackpot Casino 4.9/5
70 No Wager Free Spins on Bigger Bass Bonanza
T&Cs Apply

These Special Promotional Terms shall apply to the Free Spins granted through the Promotion: Play with £15 and receive 70 Free Spins for Bigger Bass Bonanzas. This Free Spin offer is exclusively available for new Players The Free Spin shall be made available upon a minimum deposit of £15 or more which needs to be spent in any of the Qualifying Games through one or multiple bets. The minimum deposit amount needs to be made in one unique transaction/deposit and not cumulative deposits. The minimum deposit must be spent and/or bet on any of the Qualifying Games within 48 hours of the first minimum deposit being credited to the Players account. The Qualifying Games are any of the Slots and Instant Win Games offered by Jackpot.com. The Free Spins will be available to claim, upon spending the minimum £15 deposits on any of the Qualifying Games, for 7 calendar days as of the day when they were credited to the Players account under My Account > My Promotions Section. The Free Spins can only be used on Bigger Bass Bonanza. The maximum winnings that can be withdrawn from the Free Spins are £100. Any terms not specified in these Special Promotional Terms, the Promotional Terms shall apply and will be subject to Jackpot.com Terms and Conditions.#ad

888casino 4.9/5
Up to £200 200% Bonus
T&Cs Apply

First-time depositors • Min deposit £10 • Claim within 48 hours • Expires in 90 days • 30X wagering • Valid on selected slots • UK and Ireland only • Full T&Cs apply #ad

Gems Bonanza Slot RTP, Details & Wager Limits

Reels/Paylines: 8×8 grid + Cluster Pays

Stakes Range: 20p to £100 per spin

RTP: 96.55%

Max Win: 10,000 x stake per spin

The Gems Bonanza slot is played on an 8×8 grid. Form a winning combination by landing a cluster of 5 or more matching symbols or wilds. The more matching symbols, the bigger the payout. You can land winners from multiple symbols from the same tumble.

Stakes in Gems Bonanza range from between 20p and £100 per spin. Use the + and – buttons in the bottom right-hand corner of the screen to adjust. You can run between 10 and 1,000 autospins if required. There are also options for quick and turbo spin mode if you want to ramp up the pace. Both Autoplay and the quick/turbo modes are not available in the UK.

The Gems Bonanza RTP is 96.55% which is well above the 96% slots average. The volatility is very high (5/5) meaning big wins will be hard to come by. The chance to hit big wins in a short time span is higher on the flip side.

In terms of payouts, it can deliver some big potential rewards though. The maximum payout is 10,000 x your total bet per spin. This can be won during the Gold Fever Progressive feature (more details below).

Theme – follow the map to lost treasure

Theme: Aztec

High Value Symbol: Red Jewel

Compatibility: Mobile, Tablet, Desktop

Gems Bonanza slot base game

With an Aztec theme, shimmering jewels dominate the reels in the Gems Bonanza slot. It conjures up images of an Indiana Jones adventure. In the backdrop, a mysterious pyramid building appears as well a statue that fires off the modifiers when they strike. The bright visuals here are sharp and clear. That’s important in a slot that has so many moving parts. There’s a panpipe-heavy backing track playing in the background.

On the reels are 7 brightly coloured gems. The most rewarding symbol is the red jewel. This pays 1,000 x your total stake if you land a cluster of 25 or more matching symbols.

There’s also a wild symbol that replaces all symbols when it appears in the Wild Gem and Lucky Wild modifiers. There is no scatter or bonus symbol as you’ll discover below.

Symbol Payouts/Info
gems-bonanza-slot-blue-gemstone-symbolBlue Gemstone 25= pays 50 x stake
gems-bonanza-slot-pink-gemstone-symbolPink Gemstone 25= pays 75 x stake
gems-bonanza-slot-yellow-symbolYellow Gemstone 25= pays 100 x stake
gems-bonanza-slot-turquoise-gemstone-symbolTurquoise Gemstone 25= pays 150 x stake
gems-bonanza-slot-green-gemstone-symbolGreen Gemstone 25= pays 300 x stake
gems-bonanza-slot-purple-gemstone-symbolPurple Gemstone 25= pays 500 x stake
gems-bonanza-slot-red-gemstone-symbolRed Gemstone 25= pays 1,000 x stake
gems-bonanza-slot-wild-symbolWild Substitutes for all symbols + only appears in Wild Gem + Lucky Wilds features

Gems Bonanza Mobile

gems-bonanza-mobile-slot

You can play Gems Bonanza on all devices. This includes mobiles, laptops, PCs and tablets. Despite the 8×8 game grid being much larger than a standard slot, the crystal-clear imagery is very easy on the eye. The smartphone/mobile version works very nicely indeed.

Gems Bonanza Bonus Features

In the Gems Bonanza slot, the gameplay is a little unusual. There are 8 bonus features in total. There’s the grid setup and tumbling reels for starters. Coloured markers can in turn can bring a host of modifiers into play. Then there’s the Gold Fever Feature where the modifiers play out in turn. Work through the levels there to activate multipliers. I’ll start with the game grid.

Tumble feature

The game is played using a Tumble feature. After a winning combination is created, all the successful symbols are removed from the reels and new symbols drop in and replace them. A new payout calculation then follows. If you land a new winning combination, the process is repeated. The tumbles keep on coming until there’s no new winner on display. This is pretty much a standard feature of a grid slot.

Spin features

On any base game spin, you could see a coloured marking appear behind a symbol. If that symbol becomes part of a winning combination, the coloured mark triggers a modifier. If that creates a winner, a standard tumble then follows. Again, these continue until there’s no new winner. The markings deliver the following extras. It’s possible to land multiple modifiers on the same spin. The modifiers/features play out in sequence.

Feature Mark Description
Nuclear Blue All the symbols on the grid are removed + a new set of symbols replace them
Wild Gem Pink After the round of tumbles is complete, all examples 1 symbol turn into wilds
Squares Brown A 2×2 symbol block is added to a random position on the grid
Colossal Red A 3×3, 4×4 or even 5×5 symbol block is added to the grid
Lucky Wilds Green Between 5-15 wild symbols are added to the grid with a new tumble to follow

Gold Fever Progressive feature

Gems Bonanza slot Gold Fever Progressive feature

Each time you land a winning cluster from a single set of tumbles, the symbols are added to a meter to the left of the reels. Collect 114 symbols from a single spin and a set of tumbles to trigger the Gold Fever Progressive feature.

You’ll then get a ‘spin’ where all the modifiers play out in succession. Boosting your chances here is a 2x multiplier. Once again, winning symbols are collected in a meter. Collect enough symbols to fill the meter and you’ll advance to the next level where even bigger multipliers are in play:

Level Symbols Collected Multiplier
1 114 2x
2 116 4x
3 120 6x
4 125 8x
5 132 10x

The meter reverts to zero at the start of a new spin. Finally, in some territories, you’ll have the option to buy the Gold Fever Progressive feature for a fee of 100 x your total stake. This is known as the Gold Fever feature. The Collect numbers are slightly different to standard play but otherwise, the feature is the same.

Gems Bonanza Review Summary – exciting + high win potential cluster pays slot

Ratings
Theme & Symbols








Sounds & Music








Bonus Features








RTP (96.55%)








Max Win (10,000 x)








Originality








I was very impressed by what I found in the Gems Bonanza slot. The sound and visuals are terrific, creating loads of atmosphere. The modifiers keep the cluster pays game engine motoring along too.

The action here can really rev up during the Gold Fever Progressive feature, especially if you collect enough symbols to advance through the levels and bring the larger multipliers into play. It reminds me of various grid slots from Play ‘n GO in the way the features come into play (like Miner Donkey Trouble and Reactoonz 2).

The best of the Spin features is the Lucky Wilds feature as landing up to 15 wilds can easily give you 114 or more winning symbols. This will in turn bring other levels and their subsequent multipliers into action. The hope is that you get a big multiplier with all the Spin features playing out in sequence.

With 10,000 x bet max wins, Gems Bonanza is a potentially lucrative grid slot that benefits from a higher than average RTP rate. It’s well designed, has lots of extras but is high variance.

Like grid/cluster pays slots? Jammin’ Jars from Push Gaming and Sweet Bonanza by Pragmatic Play are the 2 most popular choices. For more gem action, try Stellar Jewels Power Combo by Just For The Win.

Pros
  • 10,000 x bet top payouts
  • High 96.55% RTP rate
  • Various bonus features
Cons
  • No free spins
  • Similar features in other grid slots
gdpr
This website uses cookies as specified in the Cookie Policy.
Cookie Policy Accept