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Queen of the Crystal Rays slot

Queen of the Crystal Rays
Queen of the Crystal Rays
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Updated: 22.07.2025
Reviewed by: Ella Houghton

Queen of the Crystal Rays is a slot machine from Crazy Tooth Studio that will take you on a mysterious adventure with the beautiful white-haired queen of crystals. In this slot machine that appeared on the gambling market on 31/07/2019, you will see many different crystals that can trigger massive prizes and you can also activate the lucrative Free Spins Bonus Round. Read our full review of this slot and try its demo mode to see if it's right for you!

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In this review
  1. Slot details
  2. Theme
  3. Bonus Rounds & Free Spins
  4. Summary
  5. Where to play
General information about Queen of the Crystal Rays slot

General information about Queen of the Crystal Rays slot

Rating by Ella Houghton:
3
User’s Rating: (based on  reviews):
8
Crazy Tooth Studio
Write a review +25 SJ points
  • Release Date:
    31.07.2019
  • Volatility:
    Medium
  • RTP:
    96.7%
  • Multiplier:
    Yes
  • Max. win:
    2,597x
  • Bonus game:
    Yes
  • Free spins:
    Yes
  • Scatter Symbol:
    Yes
  • Wild symbol:
    Yes
  • Symbol Stacked:
    No
  • Jackpot Game:
    No
  • Slot lines:
    50
  • Slot reels:
    6
  • Layout:
    6-4
  • Stakes range (€/£/$):
    0.2 to 50
  • Slot Theme:
    Crystal Gems
  • Technology:
    JS, HTML5
More infoLess info

How to Play

The playing field consisting of 6 reels in 4 rows provides up to 50 lines that pay both ways. Combinations are created from 3 to 6 of a kind symbols on adjacent reels. Wild symbols help to create combinations by replacing regular symbols and there are also Wild Multipliers, which we will talk about a bit later. The betting range starts at €0.2 and you can bet up to €50 per spin.

To start this mystery journey all you need is:

  • Open Queen of the Crystal Rays at your chosen casino
  • Look at the possible payouts in the paytable
  • Read the rules of bonus features
  • Choose a bet from the range of €0.2–€50
  • Press the spin button to set the reels in motion!

Queen of the Crystal Rays RTP and Volatility

9.7 

Medium volatility and 96.7% RTP are a good combination for high wins.

Crazy Tooth Studio has made a pretty well-balanced math model for this slot so you will be dealing with medium risk here. This means that good things like prize combinations and bonus features will happen more often than in high-risk games and sometimes you can get really big prizes. The theoretical return (RTP) stands firmly at 96.7% which is above the industry average.

Theme

9.6 

The game has a fantasy theme and it's obvious from the title that it has a queen and crystals. In the background, there is a wall with patterns that sometimes changes its color and in the middle, there is a large playing field filled with crystals, chests, prisms and other symbols. Queen of the Crystal Rays is like a slot that is at least 10 years old as players these days expect much more creative designs and better graphics.

The queen, chest, bowl and plate filled with gold are premium symbols, while the low-paying symbols are 4 gems. There is also the inscription "Wild" which is the Wild symbol, 2x which is the Wild Multiplier, the inscription "Bonus" which is the Scatter symbol and the prism about which we will talk below.

Theme

Queen of the Crystal Rays slot paytable

Mobile Compatibility

Mobile Compatibility

Yeah, this slot machine really looks like it is at least 10 years old but it was made using modern JS and HTML5 technologies, which makes it well compatible with all modern mobile devices. You can take this mystical adventure with gems and prisms anytime, anywhere, just launch Queen of the Crystal Rays from your smartphone or tablet!

About Crazy Tooth Studio

This gem-themed slot was created by Crazy Tooth Studio, a provider that creates top-notch casino games with unique gameplay. Crazy Tooth Studio was founded in 2011 by Ben Hoffman, who gained vast experience in the online gambling industry while working at IGT. The company's unusual but memorable company name was inspired by Hoffman's dog and its protruding tooth.

Bonus Rounds & Free Spins

9 

Wild Symbols and Wild Multipliers

Wild symbols are an important part of the game. They replace regular symbols to give you much more combos in the long run. There are also 2x Wild Multipliers here. They double the payout for a combination when they participate in it.

Free Spins

To activate the Free Spins feature, you only need to land 3 or more Scatters (inscriptions "Bonus") anywhere in view. Four free spins will be awarded. At the start, the playing field is populated with credit values that can be won. Credit awards are multiplied by the bonus bet multiplier. In each round, Crystal Rays initiate and credit values along the path of the crystal rays are awarded. Credit values may be multiplied by up to 5 times.

Queen of the Crystal Rays slot machine

Crystal Rays

Crystal Rays is a random bonus feature that can be activated in the base game. It triggers a large playing area and additional 25 lines – this is how you can activate the maximum possible 50 lines! This exciting feature will also reflect rays with the help of prisms and then give you Wild symbols or Wild Multipliers on their way.

Queen of the Crystal Rays slot machine

Queen of the Crystal Rays Demo Play

Crazy Tooth Studio cares about the interests of the players, which is why their Queen of the Crystal Rays slot has a demo mode. It's right on this page and available to all our visitors! You only need to click the play demo button to run it. Once launched, it will give you a certain amount of fun coins that you can use to place bets.

Max Win

7.3 

Win up to 2,597.45x the bet!

You can win up to 2,597.45x the bet in this mystical adventure with gems and prisms (based on a simulation of 10 billion games). This is a normal max win potential but many medium volatility games can offer much higher prizes. You will be able to unleash this potential during the free spins feature along with the active Crystal Rays feature.

Overall Rating

8.9

Queen of the Crystal Rays looks like it's a bit outdated but if you digest its design, you'll notice that there's some decent gameplay underneath, full of fun features and massive prizes. The game has an RTP higher than average, a relatively good max win potential and a unique set of bonus features that might definitely convince some players to give it a try. You know, we would love to see this slot get a "second chance", a sequel with a better design that could keep the good math and bonuses of the original.

Hits
Medium volatility comes with 96.7% RTP
Wild Symbols and Wild Multipliers
Free Spins with Crystal Rays
Misses
Outdated looking design
Max win potential is ok but not impressive

FAQ

Can I buy a bonus round of this game?

This slot machine does not come with a Bonus Buy option so you can only activate its Bonus Round organically, i.e. by landing 3+ Scatters.

Can I spin the Queen of the Crystal Rays reels for free?

Yes, the demo mode is right on this page and available to all our visitors! You only need to click the play demo button to run it.

What is the Return to Player (RTP) in Queen of the Crystal Rays?

The theoretical return (RTP) stands firmly at 96.7% which is above the industry average.

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Ella Houghton
Ella Houghton
Expert in: News, Blog, Slot reviews, Payments
Ella is a professional content-writer with 8 years of experience in the casino sphere. She has broad knowledge of gambling related themes and is happy to share this with Slotsjudge.

2126 articles

Reviewed by Editor-in-Chief
Nikita Lukanenoks
Rate this article and leave a comment

Overall rating

Based on 2 reviews

8/10
Sloto Toto own avatar
Sloto Toto
6 lvl Superstar
8
Winning: €8
Multiplier: x41
A unique and mysterious slot with hidden potential.
The upside is in RAY feature when board grows to 50 symbols + wilds appear. Triggering it is a good motivation. I was lucky to trigger it 4 times in 100 spins.
Actually, it’s FS round that was harder to trigger. I was kinda annoyed by low-quality “close but no cigar” trolling with 2 scatters.
Finally, after 150 spins I triggered FS! A fun round with guaranteed wins. And those wins can be really big. In my case It was ok.
PS volatile one
Review image 975-0
26.06.2022
slotshunter own avatar
slotshunter
5 lvl Spinner
8
Winning: €5
Multiplier: x5
Crystal Rays is an atrractive slot with neon bright colors and overall magic style. Among icons 2x wild is an outstanding one as it could multiple payline winning during the base game. Another great decision is a free spin round. It includes only 4 rounds, but they are not usual. It looks like magic crystal collecting winnings on the random payline with growing multipliers on each level. In total I hit 5 eur from the first triggered free spin bonus.
Review image 644-0
22.05.2022
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