Know before you spin
Retrobet Casino shows every figure in full, so you can check the numbers before you bet.
| Game detail | Listed as |
|---|---|
| Provider | Pragmatic Play |
| RTP | 96.55% |
| Volatility | High |
| Grid | 8x8 |
| Release date | 01/10/2020 |
An 8x8 grid with an Aztec, gem and treasure theme, played on cluster pays. A win needs at least 5 matching symbols joined horizontally or vertically, not a line across fixed paylines. After each win, the tumble feature refills the emptied spots, so one spin can chain several wins. Seven symbol types sit on the paytable.
Five spin modifiers, from NUCLEAR to LUCKY WILDS, can switch on after a win lands on a marked spot. Gold Fever is the bonus round, started by 114 winning symbols in a base spin. Its five levels each play every modifier once in fixed order while the win multiplier climbs from 2x at level 1 to 10x at level 5.
Spot the bonus
It shows what a win, the bonus and the base game look like before you spin.
Gems Bonanza rounds
You will know how each bonus starts and what each level adds before you spin.
114 winning symbols collected in one base spin trigger Gold Fever, a progressive bonus. Its 5 levels each play all 5 spin modifiers once, in the order NUCLEAR, WILD GEM, SQUARES, COLOSSAL SYMBOL, LUCKY WILDS. The win multiplier climbs 2x, 4x, 6x, 8x and 10x across levels 1 to 5.
Base game10x multiplier
8x8 grid, cluster pays: a win needs at least 5 connected symbols, horizontally or vertically. Tumble refills the grid after each win. Random coloured marks can trigger one of 5 spin modifiers when a win lands on the marked spot.
Each spinCluster wins
Gems Bonanza mechanics
Most players worry about what happens after the first spin, so each step follows the order on screen.
Set the bet from A$0.20 up to A$240 before the first spin. The paytable shows payouts at A$0.20, while A$2 and A$5 are example stakes.
Five or more matching symbols touching horizontally or vertically form a win. Those symbols are removed, the Tumble refills the grid, and a new win can form in the same spin.
Coloured marks can trigger one of five spin modifiers when a win lands on them. Winning symbols also feed Symbol Collection; 114 in one base spin trigger Gold Fever.
Gold Fever starts after 114 winning symbols are collected in one base spin. Its five levels each run all five spin modifiers once, in fixed order.
Set your loss limit before the first spin, since no session result can be known in advance. Call 1800 858 858 for the National Gambling Helpline.
Seven symbols below
The payouts below are in cash at the example bet of A$0.20, and a cluster with more symbols pays more.
| Cash value | 12+ | 15+ | 20+ | 25+ |
|---|---|---|---|---|
 Red ruby | A$2.50 | A$5 | A$20 | A$100 |
 Purple gem | A$1.25 | A$2.50 | A$10 | A$50 |
 Green emerald | A$0.75 | A$1.50 | A$5 | A$30 |
 Turquoise gem | A$0.50 | A$1 | A$2.50 | A$15 |
 Amber gem | A$0.38 | A$0.75 | A$2 | A$10 |
 Pink gem | A$0.25 | A$0.50 | A$1.50 | A$7.50 |
 Blue gem | A$0.20 | A$0.38 | A$1 | A$5 |
100 times the total bet buys Gold Fever directly, so at the top example bet of A$5 the price appears in the table below.
| Bonus round | Total cost | RTP |
|---|---|---|
| Buy Gold Fever at 100x | x100 · A$500 | – |
96.55 means that the game pays back A$96.55 for every A$100 staked, in the long run. The version run on this site is shown in the game rules.
| Return figure | RTP | Standard setting |
|---|---|---|
| Version 1 | 96.55% | Yes |
Collecting 114 winning symbols in one base spin starts Gold Fever, but how often that happens is not known in advance. A single session can end without Gold Fever, and the result of one session is random whatever the RTP is. RTP describes returns over very long play, not a promise for your balance tonight.
96.55 is the RTP listed for Gems Bonanza on this page. Which RTP version Retrobet Casino runs is shown only in the game rules, so read that section before you rely on any return figure at all.
The 8x8 grid leads to a maximum win that is a ceiling reached very rarely, and no one can promise a player will come near it. The highest bet allowed here is A$240, and the bets used on this page, A$0.20, A$2 and A$5, are examples only.
Before the first bet
The worry is losing money on a game you have not yet learned.
The demo needs no money and pays nothing. The real game needs a Retrobet Casino account and you must be 18 or older.
Play for real18+ is the minimum age for Gems Bonanza. Support comes from the National Gambling Helpline on 1800 858 858, and BetStop is the national self-exclusion register.
A$0.20 is the minimum bet, yet small stakes still add up. Set a session budget before you begin, in an amount you can lose without strain.
10x sits at the top Gold Fever level. Decide when to stop before the session begins, and keep to it after a win.
Bets reach A$240 per spin, so use the deposit and loss limits in your account before you start playing. Limits only work when set before play begins.
96.55 percent is a long-run figure, not a promise for one session. If the game stops being fun, take a break before the next session.
Five other titles
The worry that Gems Bonanza is the wrong pick, answered with five other titles to compare.
Gems Bonanza basics
Most players ask whether they can practise before risking money and what a bonus costs.
A$0.20 per spin is the lowest stake, so start there to learn the rules. The paytable on this page lists what each symbol pays at that bet, and the Base Game rules explain how a cluster win is formed.
10x is the highest win multiplier in Gold Fever, reached at level 5. This page gives no top payout for Gems Bonanza, so no multiple of the bet or money amount is promised.
A$0.20 to A$240 is the bet range per spin, and A$240 is the highest bet allowed on this site. The examples on this page use A$0.20, A$2 and A$5, which are not the limits.
100 times the total bet buys the Gold Fever round directly. At the example top bet of A$5, the purchase costs A$500. The round can also be reached by collecting 114 winning symbols in a base spin.
96.55 percent marks the one RTP setting of Gems Bonanza. RTP is the share of staked money the game returns over a very large number of spins, so it says nothing about a single session.
8x8 grid, high volatility: wins come less often, but a bigger one can follow a long run without a win. The balance can drop for a while, and no one can say in advance when a bigger win arrives.
Senior editor, previously reviewing licensed operators for Australian readers
I check every payment method against its minimum deposit, withdrawal floor and cap, and I confirm the licence and company details before any page goes live.
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