Jackmillion Casino

Pragmatic Play · 2020

Gems Bonanza

Symbols land on an 8x8 grid in Gems Bonanza, a high volatility video slot by Pragmatic Play. The figures, rounds, bonus modes and costs come first.

  • RTP 96.55%
  • Volatility High
Gems Bonanza

Gems Bonanza: clusters, tumbles and a bonus round

On the 8x8 grid, a win forms when five or more matching symbols touch horizontally or vertically. The winning symbols pay and clear, and the tumble feature refills the empty spots from above, so one spin can chain several wins. The theme combines Aztec, gem and treasure motifs, and the base game is a cluster pays game.

Random coloured marks can switch on one of five spin modifiers once a win lands on a marked spot. Collect 114 winning symbols in one base spin and Gold Fever opens, a progressive bonus with five levels where the win multiplier climbs from 2x to 10x. Each level plays all five modifiers once, in a fixed order.

Game sheet

Few big wins or many small ones

Five figures that show who made the game, what it returns, and how its wins arrive.

Few big wins or many small ones
Game settingStated figure
ProviderPragmatic Play
RTP96.55%
VolatilityHigh
Grid8x8
Release date01/10/2020

Inside the bonus

Gold Fever frames at a glance

At Jackmillion Casino, each screen below shows the game as it plays, with nothing added for effect.

  • Gold Fever bonus round, a progressive level in play
    Gold Fever bonus round, a progressive level in play
  • Spin modifier in play during the Gold Fever bonus
    Spin modifier in play during the Gold Fever bonus
  • Winning cluster paid after the tumble refills the grid
    Winning cluster paid after the tumble refills the grid

Once the trigger hits

Gems Bonanza spin modifiers and Gold Fever

After this, you will know how each mode starts and what it can pay.

Climb the five Gold Fever levels

Gold Fever starts when a base spin collects 114 winning symbols. Each of its 5 levels guarantees all 5 spin modifiers play once, in fixed order: NUCLEAR, WILD GEM, SQUARES, COLOSSAL SYMBOL, LUCKY WILDS. The win multiplier rises 2x, 4x, 6x, 8x and 10x across levels 1 to 5.

Base game playUp to 10x

Clusters and tumbling wins

Each spin starts on the 8x8 grid. Five or more matching symbols connected horizontally or vertically form a winning cluster. After each win, the tumble feature refills the empty spots. Random coloured marks can trigger one of the 5 spin modifiers when a win lands on a marked spot.

Placing a betCluster wins

Clear bet sizes

Follow one round from start to bonus

Most players worry about surprises mid-round, so these steps follow the reels in order.

  1. Gems Bonanza bet range

    The reels stay still until you pick a bet from A$0.20 up to A$240. Wins are paid as multiples of that stake, so a bigger bet pays more.

  2. Look for touching symbols

    Symbols touching horizontally or vertically form a cluster, and five or more connected symbols pay. After each win the tumble refills the grid, so one spin can pay several times.

  3. Landing on a coloured mark

    A win that lands on a random coloured mark can trigger one of five spin modifiers, named NUCLEAR, WILD GEM, SQUARES, COLOSSAL SYMBOL and LUCKY WILDS.

  4. Levels climb to 10x

    Once a single base spin collects 114 winning symbols, the Gold Fever bonus round starts at level 1. Each level plays all five spin modifiers once in fixed order, and the win multiplier rises from 2x at level 1 to 10x at level 5.

  5. Gems Bonanza spending limit

    The reels stop only when you stop betting, so set your spending limit before the first spin. If play stops feeling fun, call the National Gambling Helpline on 1800 858 858.

Gems Bonanza paytable

Check what each one returns at A$0.50

The payouts below are in money at the example bet of A$0.50, and more symbols in a cluster pay more.

Symbol12+15+20+25+
Red rubyA$6.25A$12.50A$50A$250
Purple gemA$3.12A$6.25A$25A$125
Green emeraldA$1.88A$3.75A$12.50A$75
Turquoise gemA$1.25A$2.50A$6.25A$37.50
Amber gemA$0.94A$1.88A$5A$25
Magenta gemA$0.62A$1.25A$3.75A$18.75
Blue gemA$0.50A$0.94A$2.50A$12.50

Paying to enter the 100x round

The Gold Fever price is 100 times the bet, which comes to A$1,000 when the bet is A$10, the top bet in our examples.

Bonus buyAmount dueRTP
Buy Gold Feverx100 · A$1,000–

Is the Gems Bonanza version on Jackmillion Casino?

Return to player is the share of stakes a game pays back over time. The table shows that share in dollars for every A$100 staked. The version running here is listed in the game rules.

RTP versionRTPSet by provider
Variant 196.55%Available

Will the bonus round land on my next spin?

Each spin fills the 8x8 grid with gems, and clusters of five or more matching symbols pay. How often the bonus round arrives is not known in advance. The result of one session is random, whatever the 96.55 RTP suggests over a long run.

After each win, the tumble feature drops new symbols into the gaps and the grid refills from above. Which RTP version this game runs is shown only in the game rules, not on the reels, so read them before the first spin.

Wins build on the grid as spin modifiers play out, yet the maximum win of Gems Bonanza is a ceiling reached very rarely. Treat it as a ceiling, not a target. No figure on this page tells you what a single session will return, so set your bet to a budget you can afford to lose.

Try before staking

Practice rounds and cash bets

This section settles whether you can test the game without money and what the real version requires.

The demo needs no money and pays nothing. The real game needs an account at Jackmillion Casino and you must be 18 or older.

Play for real

When the reels have gone quiet

You must be 18+ to play. For help, call the National Gambling Helpline on 1800 858 858 or use the BetStop national self-exclusion register.

Your session budget

Decide your session budget before the first spin, and treat it as the money you are prepared to lose.

Gems Bonanza stopping point

Pick your stopping point before you start, and keep to it even after a win on the reels.

When a losing run drags on

Set deposit and loss limits in your account before the next session, so a losing run has a built-in end.

Step away when fun fades

When the game stops being fun, take a break from the lobby, and use BetStop if you want to self-exclude.

National Gambling HelplineBetStop

Gems Bonanza basics

How big can Gems Bonanza wins get?

Read these answers and you will know the bets, the bonus price and the top multiplier.

what is the max win on Gems Bonanza?

On the reels, the highest multiplier in Gems Bonanza is 10x, reached at level five of Gold Fever. It starts at 2x and climbs through 4x, 6x and 8x, and every level plays all five spin modifiers once. The cash value of a win grows with your bet.

How much can I bet on Gems Bonanza?

Each spin on the 8x8 grid uses the bet you set, which runs from A$0.20 up to A$240. The paytable uses A$0.50 as its example bet, so check the stake you pick before each spin.

Can I play Gems Bonanza in demo mode?

On the 8x8 grid, the tumble feature refills the grid after each win. The rules of each mode are set out on this page, so you can read how a round runs before placing your first bet from A$0.20.

Can I buy the Gems Bonanza bonus and what does it cost?

Collecting 114 winning symbols in a base spin starts Gold Fever, and you can buy it straight away. The buy costs 100 times the total bet, so at the A$10 example bet it is A$1,000.

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Grace Holloway

Senior editor and former responsible gambling compliance reviewer

I read every bonus condition and wagering requirement line by line before it appears here, and I check the licence and company details against the source myself.

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