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Author Lisa Michaels

Gemtastic Slot Review

Return to Player96.07%

Discover treasure under the earth’s surface in the Gemtastic slot by Red Tiger. Set in a mysterious underground cavern, this slot offers big prizes and exciting gameplay to keep you on your toes. Shiny gems of all shapes, sizes, and colours fill the reels while multipliers and wilds run through the gameplay, delivering excellent winning opportunities. There are no free spins here, but there is enough gameplay action for wins worth over $100k per spin.

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Game Data

Software providerSoftware:

Red Tiger Gaming

RTPRelease Date:


Reels amountReels:


Slot VolatilityVolatility:


Slot Game TypeGame type:

Video Slots

Slot PaylinesPaylines:


Min coin betMin coin:


Max coin betMax coin:


Free spins offeredFree spins:


Wild SymbolsWild symbol:


Progressive jackpotProgressive:




How to Play Gemtastic

  1. Find an online casino that has Gemtastic in its slots collection.
  2. Set a budget for yourself, and remember to check out the paytable and rules.
  3. Experiment with smaller bets first to get used to the game.
  4. Monitor your balance to make sure you are spending your money wisely.

Game Controls

The game controls are on either side of the reels at the bottom of the screen. With these buttons, you can change your bet, use Autoplay, spin the reels, and increase the spin speed.

Gemtastic start screen
The Gemtastic typical Screen Layout.


As its name suggests, gems dominate Gemtastic, making up all the symbols on the paytable. The teal gem pays 0.8x your bet for six on a payline, the blue gem pays 1x, the purple gem pays 1.2x, the peach-coloured gem pays 1.4x, and the yellow gem pays 1.6x. The pink gem pays 3x your bet for five on a payline, the red gem pays 4x, the green gem pays 6x, and the gold gem pays 8x.

The wild symbol substitutes for any other symbol to help you complete winning combos and pays 50x your bet for five on a payline.

Gemtastic paytable
Gemtastic wild

How you Win

Land 3 or more matching symbols on a payline, and you will be rewarded with a win. The wild symbol can help you do this by standing in for any missing symbols in your combo. When you land a winning combination, all the symbols involved will disappear and be replaced with new ones, meaning you could get multiple wins per spin.

How Much Can You Win?

Gymnastics has a top prize of 10,201.30x your bet, so if you bet the maximum of $100, you could take home just over $1 million from a single spin.

Game Features

1. Multipliers

Every time you land a consecutive win, the progressive multiplier, shown in the meter on the right of the reels, will increase. Your multiplier starts at 2x and can reach a maximum of 15x, but it will reset between spins.

2. Magic Glow

Random symbols on the reels can be highlighted with a mysterious glow on any spin. If any of these symbols are involved in a winning combo, you will get a respin where the glowing symbols transform into wilds.

Gemtastic magic glow
The Magic Glow feature can add multiple wilds to the reels.
3. Mega Gems

All the regular symbols can land as giant 2x2 or 3x3 versions. These mega gems make it easier to create winning combos and increase the amount you can win on that spin.

Gemtastic mega symbol
Mega symbols make winning easier.

RTP& Volatility 

This game’s high volatility lets you know that you are in line for big wins but that they will not land that often. The RTP of 96.07% is above the industry average and a theoretical indicator of what percentage of your bets you could win back over time.

Visual & Sound Experience

Gemtastic has a high-contrast, eye-catching theme featuring reels floating in a dark cavern with an eerie glow from purple jewels embedded in the rock. The game’s soundtrack is mostly a low-volume ambient instrumental, but it gets more energetic when you start landing consecutive wins.

Free Play or Demo Play

Most online casinos you visit will offer you free demo versions of many slots. Playing a demo before the real version works in your favour because you will have an endless supply of free credits, allowing you as many spins as you want to explore the gameplay and bonus features fully.

Gemtastic vs. Other Slots

Gemtastic’s crystal-focused theme and unconventional bonus features give it a competitive edge, but other slots in this genre give it a serious run for its money. Crystal Rift has a similar theme and set of features, although it has a much more high-definition look. If you’re looking for the inspiration behind most modern crystal-themed slots, check out our Starburst, an iconic title with no free spins feature, instead generating all your big wins from expanding wilds.

My Gemtastic 25 Free Spins Experience

It didn’t take long until the reels started to cascade and I got a few small wins

Gemtastic is one of those few slots you come across that hit the nail right on the head; the sound effects and the visuals are instantly noticeable because of how great they are and how great they feel. Even more interesting about the slot is that it has no spinning reels but uses the cascading engine to drive this game. I began by setting my bet amount to £4 per spin. As the reels were cascading, I hit a few dry spins, and then it all started to unfold, hitting combinations and increasing the multipliers to x5.

I got a big win of £174 right at the start of the session. The thing that’ll be one lucky occurrence. With some backing, I decided to increase the bet amount to £6 per bet and continued, but I didn’t win anything significant until I hit a combination. The symbols started exploding again, and I won another bit of £97, pushing me up to about £140 over my starting amount in just 25 spins.

  • Ended in a profit.

If you enjoy slots with chain reactions, Gemtastic is a must-try. It's straightforward, making it easy for anyone to jump right in without a learning curve. One of its standout features is the potential for many wilds, which can lead to impressive payouts combined with a juicy multiplier. While the limitation on paylines is a slight drawback, it's okay.

Pros and Cons


  • Huge top prize
  • Win-boosting multiplier


  • No free spins

Our Verdict

Gemtastic has a lot of great points, including a fantastic theme and a top prize that is way above the average slot. While the game does not have a free spins round, I still got plenty of excellent winning opportunities, especially from the Magic Glow feature, which regularly added wilds to the reels. The exciting gameplay and wide betting range mean that whether you are a casual player or a high roller, there is a way to play this slot that will appeal to just about everyone.

Author Lisa Michaels

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Lisa started off as a croupier at her local casino. However she found her niche in writing and has subsequently used her real-world gambling experiences to help produce and review the many online slots that are released monthly. Lisa also contributes to keeping you up to date with Canadian newsworthy stories.

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