Gemtastic slot is bright and colourful, decorated with valuable gemstones on the 6x5 reel set. The Lava Multiplier sits on the right of the reels and offers a maximum multiplier of up to 15x. Produced by Red Tiger, it has all the usual innovative features you would expect. This online slot is also available on mobile and desktop.




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About Gemtastic

Gemtastic online slot is developed by Red Tiger Gaming. There are a handful of bonus features available, including Chain Reactions and the Magic Glow feature. There’s a huge potential payout of up to 10,000x your stake, over 6x5 reels.

How To Play Gemtastic Online Slot

Total Stake


You can use the (+) and (-) buttons to adjust your stake accordingly. Your total stake will appear in the small window. The minimum stake is 20p going up to £10.


When you tap the ‘Pays’ button you will be given a screen which allows you to flick through game rules, winning combinations and symbol values. We advise you read this before playing the game.


The ‘Turbo’ button allows you spin the reels faster than a standard spin, meaning you can get more spins into a shorter space of time.


Alternatively, you can tap the ‘Spin’ button to set the reels in motion and begin the gemtastic experience.

Gemtastic Casino Slot Features

Magic Glow

The Magic Glow feature is an activator. On any standard spin one of the gems on the reels may sparkle. If the special gem forms part of a winline, they will transform into wilds on the respin. Mega Gems could get the Magic Glow treatment too, when they form part of a winline they will fall away into smaller wilds for the respin.

Chain Reaction Game Engine

After you have landed a winning combination all of the symbols in the winline are blasted away and a new one will drop in their place. These reactions/respins will keep coming until there are no more winning combinations. With each reaction the multiplier is increased by 1x, if you can get a good run of the reels here you can get up to 15x, this is known as the Lava Multiplier.

Mega Gems Feature

This feature means that you will see stacked symbols fall on the reels. This can range between 2x2 and 3x3. This will mean your winning combinations are more valuable.

Slotto Speaks

You can mine for big wins in Gemtastic slot where you could see wins of up to 10,000x your stake. There are also some big multipliers and lengthy winning spells available thanks to the chain reaction feature.

This online slot theme is simple and engaging, it reminds us of the popular Starburst slot but if you like to match your slot games by features then Gonzo’s Quest follows the same chain reaction principle through the cascading reels engine.