Sparky and Shortz Hidden Joules Online Slot

Published: 24 Jul 2023 | Updated: 24 Jul 2023
Game Provider
Maximum win
Progressive Jackpot
Bonus Feature

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Slot Setup and Betting Options

  • 7 Reels
  • 7 Rows
  • 3D Graphics
  • 29.06.2023 Release Date
  • Mobile Version
  • £0.10 Minimum Bet
  • £100.00 Maximum Bet
  • Win Both ways
  • Cluster Pays

Sparky and Shortz Hidden Joules Online Slot Review

Help two robots uncover prizes from aliens and crystals as you play the Sparky and Shortz Hidden Joules online slot. It plays out on a 7x7 symbol grid, where clusters of winning symbols vanish to trigger cascades of those above. Giant symbols and meters build multipliers, while wild symbols help to complete combinations, and come with special powers to remove symbols, create giant symbols, or spawn more wilds.

It's a medium to high volatility game with average returns of 96.20%. You can join Sparky and Shortz on PC or mobiles at online slots uk casinos that carry the Play’n GO range to win up to 6,000x your stake.

How to Play the Sparky and Shortz Hidden Joules Slot

Blue, orange, green, and purple crystals appear on the 7 reels and 7 rows, along with cute aliens in blue, green, and red shades. You’ll also find several types of energised wild symbols on the grid, which sits against the backdrop of Shortz, a giant robot who stands in an alien landscape. His diminutive friend Sparky floats to one side, waiting to blast special modifiers onto the reels, and a multiplier meter is in view to the other side.

It's a charming sight with cartoon animations and sound effects. The Sparky and Shortz Hidden Joules slot machine is the second game to feature these characters, and the original remains one of the biggest games in the Play’n GO portfolio at our recommended Betting Sites.

You can join them on PCs, Android, iOS, and Windows mobiles for between 0.10 and 100.00 per spin. A scroll bar under the reels holds all the staking options, making it easy to pick a level to suit your budget.

Other buttons include the orange arrows that open up automatic spin options and the lightning bolt right at the bottom of the game triggers a quick spin mode. UK players can’t access these through, and that’s due to local online gambling laws.

Tap the blue ‘I’ button on the panel to reach a paytable. This has further details on features such as cascades with multipliers, along with symbol values at the selected stake. It’s a cluster pays game where 5 or more of the same symbol type connected horizontally or vertically will create a winning combination. The red alien is the most valuable and you win 0.25x the stake with clusters of five, increasing to 250x with clusters of 25+.

Cascades & Other Sparky and Shortz Hidden Joules Slot Features

Cascades trigger on each win, with the symbols involved removed from the reels and the ones above them drop down to fill the spaces. New symbols appear from above the reels, and you get more cascades for as long as they create further winning clusters.

Symbols can appear in 2x2, 4x1, or 1x4 sizes and they become Mega Symbols that count as 4 individual ones to make it easier to complete wins. They also increase a win multiplier by 1x over any series of cascades.

Cascades also fill the Boost Meter to the side of the reels. You need to see 25, 60, 110 and 200 symbols in wins to activate the 2x, 3x, 4x, and 5x levels respectively. The meter increases the amount that Mega Symbol multipliers can increase by, and you can build values of 25x this way.

Special Wild symbols can land on the reels of the Sparky and Shortz Hidden Joules slot. If a wild is part of a winning cluster, it will unleash modifiers at the end of any cascades as follows –

Red Wild – Creates Mega Symbols

Yellow Wild – Removes crystal symbols from the reels

Purple Wild – Creates further standard wild symbols

Green Wild – Symbols are either created or removed

If you collect 4 special wilds over the cascades, they create a 2x2 Sparky Wild, with 8 or 12 wilds forming 2 or 3 Sparky Wilds respectively.

Special Wilds can even appear at random on a non-winning spin, helping to trigger cascades.

Slot Features

  • Bonus Buy
  • Multipliers
  • Scatters
  • Wild symbol
  • Free Spins
  • Colossal symbols
  • Re-spins
  • Cascading Reels
  • Quickspin
  • Gamble feature
  • Retriggering

Sparky and Shortz Hidden Joules Online Slot Maximum Wins, Volatility, & Average Returns

You can win as much as 6,000x the total bet here, or 600,000.00 at the maximum stake. The volatility is rated as medium to high, and the average return to players percentage is good, at 96.20%.

Our Sparky and Shortz Hidden Joules Slot Rating

Sparky and Shortz make a welcome return to desktop and mobile casinos, with a host of new alien characters and extra features. The maximum win is down from 10,000x to 6,000x, and there’s no standalone bonus round, but it’s still a fun game with plenty of exciting features.

Multipliers from Mega Symbols and the Boost Meter can increase win values by up to 25x, and Special Wilds can extend a series of cascades for even more prizes. Explore the strange world of these charming robots and play the Sparky and Shortz Hidden Joules online slot at the best Casino Sites featured here.


Play the Sparky and Shortz Hidden Joules slot machine at the maximum stake and you could win as much as 600,000.00. That’s 6,000x the stake and you can win this from the ideal mix of symbols and multipliers.

2x2, 1x4, or 4x1 size Mega Symbols can land on the reels of the Sparky and Shortz Hidden Joules slot. They count as 4 individual symbols to make it easier to complete combinations and come with increasing multiplier values.

While there’s no free spins bonus round in the Sparky and Shortz Hidden Joules slot, it has lots of other rewarding features. Cascades, special wild symbols, and multipliers are among the exciting extras.

Read about the best online casino apps here at Pick a site with the Sparky and Shortz Hidden Joules slot in their range, then you can download the app to your phone or tablet.

The developer rates the Sparky and Shortz Hidden Joules slot as a medium to high volatility game. Taken over the long term, wins are slightly less frequent than in medium volatility slots, but prize values are slightly high to counter this.

You can play the Sparky and Shortz Hidden Joules slot at the recommended casinos featured on this page. We thoroughly audit each site for their games, bonuses, security, and customer service before approving them.

The minimum stake on the Sparky and Shortz Hidden Joules is just 0.10. There are many options to match different budgets, right up to a maximum of 100.00.

The Sparky and Shortz Hidden Joules slot is similar to games such as Volts and Bolts from Light and Wonder, Alien Robots by NetEnt, and Robo Smash from iSoftbet.

Play’n GO make the Sparky and Shortz Hidden Joules slot. Play it alongside others from this developer, such as Legacy of Dead, Free Reelin’ Joker 1000, and the original Sparky and Shortz at our recommended casinos.

The Sparky and Shortz Hidden Joules slot was released on 29th July 2023.