Gemtastic Slot Review

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Red Tiger Gaming
Slot Type Video slot
Reel Type 6 reels
Payline 30
£0.20 - £10.00
Features Cascading reels, cascading wins, Mega symbols, Super symbols, extra wilds, wilds, additional multipliers, multipliers

100% up to £100 Bonus & 50 Free Spins on

New Players Only. Bonus offer valid for 2 days from receipt. 35X wagering the bonus. Max conversion: £500. Withdrawal requests void all active/pending bonuses. Excluded Skrill and Neteller deposits. Full Terms Apply

Play the Gemtastic Slot at JeffBet

Gemtastic is an online slot developed by Red Tiger Gaming. This 2019 release is a gemstone-themed slot with 6 reels, 5 rows, 30 paylines, and a max payout of more than 10,000x on your bet.

The graphics and animations are all well and good, with an underwater cave of tinkling gems as the background. Nothing really stands out, but the overall appearance is quite pleasing. Additionally, there is not much of a soundtrack. However, the sound effects are front and centre.

So, what does this online slot machine have to offer the average player when it comes to big wins? Let’s find out in our Gemtastic slot review.

How To Play the Gemtastic Slot – Rules & Tips

For both the paid online casino version and the Gemtastic slot free-play version, the gameplay and rules are the same. 

The first thing you need to do is click on the Stake icon in the bottom left part of your screen. From there, you can choose how much you would like to wager. You can stake between £0.20 and £10.00 per spin, and you can adjust your stake at any time during normal play. After that, all you need to do is hit the main spin button.

Cascading Reels and Wins

The Gemtastic online slot awards wins for 3 or more adjacent identical symbols on a payline. However, thanks to cascading Reels, after each win, the winning symbols are moved. Then, new symbols will cascade into the vacant slots. This can result in cascading wins, and cascading wins are key to one of the bonus features. More on that later.



All the symbols in the Gemtastic slot are different coloured gemstones. The low-paying symbols are smaller than the high-paying symbols and are all hexagon-shaped. 

Below, you will find a breakdown of all the symbols and their respective multipliers for 3, 4, 5, and 6 adjacent matching symbols.

  • Teal Gemstone – 0.1x, 0.2x, 0.4x, and 0.8x.
  • Blue Gemstone – 0.1x, 0.2x, 0.5x, and 1x.
  • Purple Gemstone – 0.1x, 0.3x, 0.6x, and 1.2x.
  • Orange Gemstone – 0.1x, 0.3x, 0.7x, and 1.4x.
  • Yellow Gemstone – 0.2x, 0.4x, 0.8x, and 1.6x.
  • Violet Triangle Gemstone – 0.4x, 0.8x, 1.5x, and 3x.
  • Red Diamond Gemstone – 0.5x, 1x, 2x, and 4x.
  • Large Green Gemstone – 0.6x, 1.2x, 2.5x, and 5x.
  • Large Round Orange Gemstone – 1x, 2x, 4x, and 8x.

Along with those symbols, you will also find the Gemtastic Wild symbol. This symbol can substitute for any of the other symbols. Also, the Gemtastic Wild symbol will reward you with a 50x multiplier if you can land 6 of them on a payline.

Gemtastic Slot Bonuses And Features

While you won’t find any free spins in the Gemtastic online slot, there are some bonus features that can increase your chances of scoring big wins.

Mega Gems

All of the symbols have 2 variations. 2×2 Mega symbols and 3×3 Super symbols which can help you form multiple winning combinations in a single spin.

Lava Multiplier

To the right of the reels, you will see the Lava Multiplier meter. After each win and subsequent cascading wins, the Lava Multiplier increases. You can earn an additional multiplier of 15x on your stake. The Lava Multiplier resets when you don’t land another winning combination.

Magic Glow

This is the main bonus feature of the Gemtastic slot. At random times, a certain symbol will start to glow. When it does, and that symbol is part of a winning combination, it will be transformed into a Wild symbol for the cascading reel after the win. 

Furthermore, the Magic Glow can apply to Mega Gem symbols. Again, the Mega Gem symbol needs to be part of a winning combination. But, when a Mega Gem symbol transforms into a WIld, it is broken up into 1×1 Wilds that then disperse across the reels.

Gemtastic Slot RTP

The return to player for the Gemtastic online slot is 96.07%, which makes this an above-average RTP slot. This means that you can expect to win back £96.07 for every £100.00 you stake when laying the Gemtastic slot UK version.

Gemtastic Slot FAQs

The jackpot in the Gemtastic slot is 10,201x on your wager.
Yes, there is a special symbol. The special symbol is the Gemtastic Wild symbol.
No, there are no free spins offered in the Gemtastic slot.
The highest-paying symbol in the Gemtastic slot is the Gemtastic Wild symbol. When you land 6 of these symbols on a payline, you will receive a 50x multiplier on your stake.
The volatility of the Gemtastic slot is high volatility.