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Sparky and Shortz Hidden Joules Slot

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Sparky and Shortz Hidden Joules by Play’n GO is a 7×7 grid slot with Cluster Pays, cascading wins, and a maximum potential win of up to 6,000x your stake.

*Any values mentioned are subject to change.


Sparky and Shortz Hidden Joules Slot Game Overview

This robotic online slot game features the two titular robots on a journey to rescue creatures and materials from a distant planet. This game is positioned against a green backdrop with dark reels built on the chest of a giant robot. 

Sparky and Shortz Hidden Joules has a medium to high volatility rate and can be played with bet sizes ranging from £0.10 up to £10 per spin. 

Eight regular paying symbols are available in this game. The yellow, red, purple, green, and blue crystals are low-paying symbols. While high-paying symbols include the orange, green, and blue aliens. 

You can play the Sparky and Shortz Hidden Joules slot here at King Casino – one of UK’s top casino sites.

How To Play Sparky and Shortz Hidden Joules

  • Sign into your King Casino account and load the slot.
  • Click the plus (+) or minus (-) button to increase or decrease the total bet amount. 
  • Click the “i” button to check the paytable.
  • Click the spin tab to start playing. 

A cluster of 5 or more identical symbols on adjacent reel positions, horizontally or vertically, form a win. The low-value symbols may award up to 25x your bet for a cluster of 25+ identical symbols. A cluster of 25+ identical high-value symbols could award up to 250x your bet.

Cascading Wins

If a winning combination occurs, all symbols involved in the win are removed from the reels. Afterwards, new symbols drop from the reels above to fill the positions to help create more wins.

Win Multiplier

If a cluster of 2×2, 4×1, and 1×4 identical symbols appear on the reels, the symbols could transform into a mega symbol. The mega symbol increases the win multiplier by +1, and it can reach up to 25x.

Boost Meter

The Boost Meter is activated by forming winning clusters. The meter increases in stages, which require a certain number of winning symbols to reach. Each stage modifies how much symbol transformations increase the win multiplier by.

Wild Symbols

Wild symbols can replace all regular-paying symbols on the reels. The Special Wild activates the Wild Features if it is involved in a win. It adds regular wilds and mega symbols to the reels, destroys a pattern of symbols, and removes crystal symbols. If you collect 4 special wilds, you can trigger the 2×2 mega-sized Sparky wild. 

Return To Player

Return to Player (RTP): 87.20%

RTP is used to explain the potential money that an online slot or casino game can pay back to players. It appears as a percentage and is generally calculated from gameplay over a long duration of time.

For example, if a slot has a RTP of 97% this means that it could pay back £97 for every £100 wagered.

However, there is no guarantee that players will receive this amount, as slot payouts are entirely random.


*All values (Bet Levels, Maximum Wins etc.) mentioned in relation to this slot game are subject to change at any time. Game features mentioned may not be available in some jurisdictions.