Gems Bonanza slot

Gems Bonanza slot facts and figures

Pragmatic Play, founded in 2015 and based in Gibraltar, released Gems Bonanza in the same year as Fruit Party. It belongs to our gems and jewels slots collection, and the full list of reviews is on the slots hub. The minimum cluster size and symbol values aren’t in our verified data, so read the paytable inside the game for those details.

How the Gems Bonanza features work: modifiers and Gold Fever

Gems Bonanza takes an unusual approach to bonuses: it has no conventional free spins round. Its extras come from marked positions on the 8x8 board and from a progression called Gold Fever.

Marked positions and the five modifiers

Clusters pay and are cleared, and fresh gems tumble into the gaps, so one spin can chain several wins. Some positions on the board are marked. When a win lands on a marked position, a modifier is triggered, and it plays after the tumble sequence has finished. There are five possible modifiers:

• Grid clear: the whole board is cleared.
• Symbol to wilds: one symbol is turned into wilds wherever it sits.
• 2x2 squares: square blocks are added to the board.
• Colossal symbol: one oversized symbol is added.
• Wild drop: between 5 and 15 wilds are added.

Gold Fever

Gold Fever takes the place of the usual bonus round. It starts when you collect enough winning symbols within one spin sequence. It has five levels, and each level runs all five modifiers, with a win multiplier that climbs from 2x at the first level to 10x at the top.

The number of winning symbols Gold Fever needs, and the multiplier at each level in between, are in the help screen. Casinos.com’s Gems Bonanza page (opens in a new tab) describes the same modifiers. As with every slot on a UK-licensed site, entry to Gold Fever can’t be bought.

Why the 8x8 grid matters in Gems Bonanza

Most cluster games use a 7x7 board of 49 positions. Gems Bonanza adds a row and a column for 64 positions, about 31% more space. In a cluster pays game, where touching groups of the same symbol win, more space means more room for big groups to form, and potentially more symbols to clear in a chain.

A larger board doesn’t make a game more generous. The return is set by the RTP, not the number of positions; the grid only changes how that return is spread across spins. Here, the extra space goes hand in hand with a 10,000x ceiling and high volatility, which points to a wide spread of outcomes.

The game’s tumbles and Gold Fever multipliers are covered in the features section above. Our general guides to cascading reels and multipliers explain the ideas.

The 10,000x Gems Bonanza max win

Gems Bonanza’s cap of 10,000 times the stake is its standout number. It is twice the 5,000x ceiling on Fruit Party and Sugar Rush, though half the 20,000x listed for Push Gaming’s Jammin' Jars.

A high cap is a description of the game’s range, not a likely result. The bigger the ceiling, the more of the RTP is reserved for rare outcomes, and the less is left for routine wins. Our page on what a max win cap means explains the trade-off.

Gems Bonanza RTP and the real cost per spin

At 96.51% RTP, the house edge is 3.49%. Multiply any stake by that figure to get the average cost per spin. Over hundreds of spins it looks like this:

Studios can provide other RTP settings and casinos choose which to run, so open the game rules and look for the theoretical return figure before you play. Our page on why slot RTPs differ at different casinos explains this practice.

What a £20 Gems Bonanza session looks like

Spend £20 once through and the average loss is 70p at any stake. The stake you choose changes how many spins you get, how large the swings are and how much the top prize is worth in pounds:

• 10p a spin: 200 spins, an average cost of 70p, and a £1,000 ceiling. The best choice for a long session.
• 50p a spin: 40 spins, the same 70p average cost, and a £5,000 ceiling. Can be over in a few minutes.
• £1 a spin: 20 spins, still a 70p average, and a £10,000 ceiling. Quite possibly no feature at all.

High volatility means most £20 sessions won’t land near 70p: many lose more, a few win substantially. That is normal and doesn’t mean the game is running hot or cold. If you plan a regular amount each week, our budget calculator guide helps set a figure you’re comfortable with.

1. Choose a weekly gambling budget and set it as a deposit limit at your casino.
2. Split that budget into sessions, for example £20 each.
3. Pick a stake that gives a reasonable number of spins per session; 10p gives 200 from £20.
4. Check the RTP in the rules when you open the game.
5. End the session when the £20 is gone or your time is up, whichever comes first.

Gems Bonanza among gem-themed and grid slots

Gem and jewel symbols turn up across many slot styles. Against other grid games with published figures, Gems Bonanza sits like this:

Reactoonz matches Gems Bonanza’s RTP exactly but has under half the cap, while Rocket Reels matches the cap on a smaller board. Our Pragmatic Play studio page lists the developer’s other titles, and Pragmatic Play’s website (opens in a new tab) shows its wider product range.

Playing Gems Bonanza under UK rules

The Gambling Commission’s online slots stake limit guidance (opens in a new tab) caps stakes at £5 a spin for over-25s and £2 for 18 to 24-year-olds, per game cycle. Alongside that, slot design rules in force since 31 October 2021 apply:

• No autoplay and no turbo, quick spin or slam stop.
• At least 2.5 seconds between spins.
• No celebrating a return that is the same as or less than your stake.
• Real-time display of your net spend and session length.
• No feature buys: since a January 2020 Commission warning, feature buy-ins are not offered to British players.

Our pages on the autoplay ban and UK game speed rules give the detail.

Gems Bonanza myths worth dropping

Our explainers on whether online slots have memory and on the gambler’s fallacy cover the maths behind these points.

Who the Gems Bonanza slot suits

It suits players who like grid games and want a higher ceiling than the 7x7 fruit and candy titles offer, and who accept that the price is a bumpier ride. If you want something steadier, look at our low volatility slots. If you want to take a break from gambling altogether, GAMSTOP (opens in a new tab) lets you self-exclude from all UK-licensed online casinos in one step.

Where to play Gems Bonanza online in the UK

Gems Bonanza isn’t named in any of our partners’ welcome offers, so check the casino’s game lobby to see if it’s listed. The offers below are slot spins for new customers aged 18 and over; terms apply.

• PlayOJO: new UK customers, excluding Northern Ireland, get 80 free spins on Big Bass Bonanza with a minimum first deposit of £10. Spins are 10p each and winnings are paid in cash with no wagering. Only through the designated offer link and not alongside other offers.
• Coral: bet £10 on slots and get 100 free spins, 10p each, on selected games. Accept them within 48 hours and use them within 7 days; winnings have no wagering. Neteller, PayPal, Paysafe, Skrill, prepaid cards and certain debit cards are excluded.
• Ladbrokes: play £10 on slots and get 50 free spins each day for your first 10 days, up to 500, at 10p each on selected games. Claim by 23:59 daily; spins last 7 days and have no wagering. Prepaid cards, PayPal, Paysafe, Neteller, Skrill and Moneybookers don’t qualify.

Coral and Ladbrokes share an operator, LC International Limited, so you may only be able to take one of their new-customer offers.

18+. Every casino game has a built-in house edge, so over time you should expect to lose what you stake. Set a budget before you play and stop when it’s gone: safer gambling tools and support. Free, confidential help: National Gambling Helpline 0808 8020 133.