King of Crystals Online Slot

Overall rating for Kings of Crystals3.5/5
Date Published


Authored by

Lisa Michaels

Slot Game ProviderProvider

All41 Studios

Online Slot TypeType

5 Reels

Slot Game Return to Player PercentageRTP


Min and Max Bet for Slot GameMin / Max Bet

0.20 / 20.00

Slot Game VolatilityVolatility


Slot Game Release DateRelease Date

1 March 2022

Play Kings of Crystals at Uptown Pokies

Uptown Pokies
Claim my $8,888 bonus today

King of Crystals Online Slot

Overall rating for Kings of Crystals3.5/5
Date Published


Authored by

Lisa Michaels

Kings of Crystals

Kings of Crystals Online Slot by Microgaming and All41 Studios features a trio of elemental regents in a medieval fantasy environment. A fortress looms in the background of the stone-clad reels that feature armour, treasure, the powerful regent themselves, and the magical crowns that they command. Bonus features overlap to create the perfect storm of winning opportunities and the game’s bonus features include free spins and wilds.

Game Symbols

  • 9 to A card royals are the low-paying symbols.
  • A gauntlet, a chalice and the three kings are the high-paying symbols.
  • The wild symbol Is a silver 'W' in a gold setting that substitutes for all regular symbols.
  • The scatter symbol appears as crowns enhanced with green, red, and blue crystals that all trigger individual free spins bonus rounds.

Bonus Features

The game’s bonus features are all wrapped up in the potentially simultaneous free spins rounds.

Free Spins

As the differently-coloured crown scatters appeared, they were gathered in colour-coded circular meters to the left of the reels. Once I had gathered enough scatters of a particular type, I activated a corresponding free spins round, each of which came with a different modifier. I also noticed that it was possible to trigger more than one type of free spins at a time as the crown symbols kept coming during the feature.

Collecting enough red scatters triggered Nudging Wilds free spins. I was awarded 5 free spins where wilds appeared stacked and would be nudged to fully cover the reel every time they landed partially in view. When the blue scatter meter filled up, the Multiplier free spins round activated, giving me 5 free spins and 2x, 3x, 5x, or 10x multipliers on every spin.

Finally, the Jackpot free spins round was triggered by the green scatters and offered the game’s maximum potential with 10 free spins. During this bonus round, gold coin symbols appeared that either held cash values worth between 1x and 10x my bet or letters that would be collected to spell out the name of one of the four fixed jackpots. Accumulating enough letters triggered the Minor, Major or Grand jackpots, that paid out 25x, 50x, 500x, or 10,000x my bet, respectively.

The Buy feature allowed me to unlock a menu of 7 options, allowing me to manually activate the various free spins rounds and the various combinations of them for the price of 20x to 110x my wager.

Our Verdict

Kings of Crystals slot contains the beginnings of brilliance but stumbles on execution. The theme is implemented competently, although the titular crystals are reduced to adornments on scatter symbols, so there wasn’t as much visual impact as I expected.

The free spins possibilities were what got me excited, with the possibility of triggering a combination of multipliers, nudging wilds, and jackpots at the same time. The experience did fall a bit flat when I realised the top possible prize weighed in at $200 00, but the winning opportunities generated were thrilling, regardless. This feel like a concept that has yet to show its true potential and I can’t wait to see where the developer goes with this.

If you like this slot, then check out Immortal Glory or Book of King Arthur

Other Slots similar to Kings of Crystals