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Yggdrasil Gaming
RTP 96.4%
Play Yggdrasil Gaming Slots
Reels 5
Paylines 33,614
Min bet size 0.10
Max bet size 10
RTP 96.5
Wild symbols Yes
Free spins No
Bonus No
Jackpot No

PopRocks Slot Review

Released April 2020

The PopRocks slot is produced by Yggdrasil Gaming. Yggdrasil Gaming take their name from Norse mythology where Yggdrasil is a magical tree where dragons lived and Odin sacrificed himself. Yggdrasil Gaming are one of the smaller slot development companies on the market at the moment – primarily focusing on lottery and scratch card game – and do not offer a full casino platform. They lease their games out to casinos using other platforms as a bolt on package. Yggdrasil Gaming publish the Return to Player/House Edge of their slots games within the game help file. The House Edge of PopRocks is 3.6%.

PopRocks is a 5 reel game that is 3 symbols high. You form wins when you land matching symbols across 3 adjacent reels from any position on the reels. There are 486 different ways to win in total but that number will change with each win.

Avalanches/Pops – When you land a win in this slot the winning symbols will be replaced new ones dropping down. However, the reel that each winning symbol lies on will have an increase in the number of symbols that are on it by 2 for every winning symbol on that reel. The maximum symbol height that each reel can reach is 7 in total and the maximum number of ways to win is 33, 614.


PopRocks has a sort of science fiction/fantasty thing going on, in that there is something very modern and futuristic about it but also something distinctly magical. It uses dark purples and blues to emphasise that magical quality and there is calming gentle harp music to accompany the satisfying digital sound of the symbols landing. A mix of old and new, of modern and gothic helps to create a exciting blend of ying and yang in this slot.

Special Symbols

Wild – Wild symbols can only appear once all reels have reached the maximum 7 symbols high. Wilds will replace all other symbols when they do get involved. However, only 1 new symbol will appear from any Pop involving a Wild symbol.

Super High Symbols – Super High symbols, that are worth much more than all the other symbols in the game are only available during avalanches, or Pops as they are referred to in this slot.

Bonus Features

Multiplier – You will notice a multiplier meter to the left side of the reels. This begins at x1 the bet and will increase by 1 each time you land enough wins on a single spin to replace 7 symbols. If you can get each reel up to the maximum 7 symbols in height then you will see the multiplier increase by 2 for every 7 symbols that are replaced.


PopRocks is an unusual blend of fantasy and science fiction, of digital and analogue, something that is reflected in the symbols, the background and in the sounds that accompany them. It is a fairly simple slot but at its heart PopRocks comes with the Pop technology that we are going to see rolled out on numerous occasions in the future, as Yggdrasil promise that this is the first of a number of slots that use it. Along with that you get Wilds and multipliers, but only once you have landed a significant number of wins in a row. The house edge offers excellent value for money and is enough for me to say that this is a slot worth checking out.

Yggdrasil Gaming Slots

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