Pros
- Fun and immersive theme
- Cluster paylines
- Free spins
- Six wild symbols
Cons
- Lower top prize than original Sparky and Shortz
Contents
Sparky and Shortz Hidden Joules Slot Overview
Get ready to save a distant planet with this sequel to the Sparky and Shortz Play'n GO slot. Sparky and Shortz Hidden Joules is set on a 7x7 grid with a cluster system rather than paylines and plenty of bonus features to explore.
Jet off to outer space with the theme and graphics of Sparky and Shortz Hidden Joules
Sparky and Shortz are two friendly droids on a mission to help save endangered animals and preserve the precious metals of a far-distant planet. The two heroes have their own personalities and want you to help them with their mission.
The inclusion of environmental and sustainable content sets Sparky and Shortz Hidden Joules apart from other slot games. Players are encouraged to think about their energy consumption habits and explore sustainable alternatives whilst hopefully landing some wins on the reels.
How to play Sparky and Shortz Hidden Joules
Start playing Sparky and Shortz Hidden Joules video slot game by following these steps:
- The base game is set on a spaceship with robotic machinery and alien characters. The controls for the game are along the bottom of the reels, where you can find the rules of the game and change the bet amount.
- The minimum bet amount in Sparky and Shortz Hidden Joules is 10p.
- When you are happy with your set-up, press the big green arrow button to begin.
- When playing slot games, you should always remember to gamble responsibly and set time and financial limits. Timeout and self-exclusion functions are available.
Sparky and Shortz Hidden Joules RTP & volatility
Sparky and Shortz Hidden Joules has a maximum RTP of 96.2% and the volatility is rated as medium to high. The max payout potential in the game is 6,000x your stake.
How to win at the Sparky and Shortz Hidden Joules slots game
The Sparky and Shortz Hidden Joules slot game is set on a 7x7 reel layout and you need to match at least five winning symbols in the base game to land a prize. It is a cluster pays layout, so players can land up to 25 winning symbols in one spin.
Top winning symbols in Sparky and Shortz Hidden Joules slots game
The highest-value symbols in the game are the three different coloured alien heads. If you match 25 of these in a cluster, you will win between 100x and 250x your stake.
The lower-paying symbols in Sparky and Shortz Hidden Joules are the coloured gems. Landing a cluster of 25 of these winning symbols will net you 15x to 25x your original bet amount.
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Sparky and Shortz Hidden Joules bonus features
The Sparky and Shortz Hidden Joules slot game has a few bonus features for players to explore:
Wild symbols
There are a massive six wild symbols available in the game: four special wild symbols, a basic wild, and a mega sparkly wild symbol. The special wild symbol adds mega symbols or replaces the basic crystal symbols.
Transforming mega symbols
You can land a winning cluster of alien or crystal symbols in the following formats:
- 2x2
- 4x1
- 1x4
This will transform the symbols into mega symbols and increase the win multiplier in the game by one. The highest win multiplier achievable is 25x.
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Free spins
The scatter symbol is the power cell symbol. If three scatter symbols land on reels one, three or five, you will be awarded ten free spins. If you land three more scatter symbols during the free spins round, you will win another five free spins up to a maximum of 100 free spins.
Sparky and Shortz Hidden Joules review summary
Sparky and Shortz Hidden Joules is a fun and engaging slot game with a relevant environmental message for players. The cluster layout rather than the traditional paylines gives it a unique edge and makes a change from the traditional slot games.
The maximum RTP is 96.20% and the max win comes in at 6,000x your original stake. This is slightly lower than the original Sparky and Shortz slots game; however, the cluster symbol gameplay experience of this version means it is definitely worth giving it a go.
| Slot Name: | Sparky and Shortz Hidden Joules |
|---|---|
| Software: | Play N Go |
| RTP: | 96.20% |
| Volatility: | Medium volatility |
| Paylines: | 243 |
| Reels: | 5 |
| Min Bet (all lines covered): | £0.30 (GBP) |
| Max Bet: | £5 (GBP) |
| Top Win: | 6000 |
| Features: | Wild Symbol, Scatter Symbol, Medium volatility, 5 Reels, Stacked Symbols, Mystery Symbols |
| Themes: | Futuristic, Science |
| Last Update: | 29/06/2026 |
Available in UK?
|
Yes. Play N Go have a UKGC license and are allowed to offer their games at UK licensed casinos. |
FAQs
Does Sparky and Shortz Hidden Joules slots have a free spins round?
Yes, the Sparky and Shortz Hidden Joules casinos slot game has a free spins round. If three scatter symbols land on reels one, three or five, you will be awarded ten free spins. If you land three more scatter symbols during the free spins round, you can win another five free spins up to a maximum of 100 free spins. Another slot game to enjoy with a free spins bonus is the Cleopatra Megaways online slot.
What is the maximum potential payout in the Sparky and Shortz Hidden Joules slots game?
The total win available in the Sparky and Shortz Hidden Joules slot game is 6,000x your stake. The original Sparky and Shortz slot game had a max win amount of 10,000x your stake, so this game is slightly lower; however, the cluster symbol gameplay means it is still definitely worth a go.
What is the RTP of the Sparky and Shortz Hidden Joules slot game?
The best RTP of Sparky and Shortz Hidden Joules slot game is 96.02 per cent, which is exactly where we expect the RTP of a slot game of this type to be. There are other RTPs available for this game, so double-check before playing to ensure the RTP is 96 per cent or above.
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| Slot Name: | Sparky and Shortz Hidden Joules |
|---|---|
| Software: | Play N Go |
| RTP: | 96.20% |
| Volatility: | Medium volatility |
| Paylines: | 243 |
| Reels: | 5 |
| Min Bet (all lines covered): | £0.30 (GBP) |
| Max Bet: | £5 (GBP) |
| Top Win: | 6000 |
| Features: | Wild Symbol, Scatter Symbol, Medium volatility, 5 Reels, Stacked Symbols, Mystery Symbols |
| Themes: | Futuristic, Science |
| Last Update: | 29/06/2026 |
|
Available in UK?
|
Yes. Play N Go have a UKGC license and are allowed to offer their games at UK licensed casinos. |
