Play'n Go

Sparky and Shortz Hidden Joules

Slots Video Slots Futuristic Food UFO Monsters Asia Sci fi

Sci-fi sequel combining a rescue story with cluster play

SlotRanker Score

/ 99

05099

The SlotRanker Score is calculated from the visible data below. It is not affected by affiliate deals, and it cannot be bought.

How this score is built

RTP

96.2%

return to player

Volatility

Medium volatility

variance

Max win

6,000×

top multiplier

Min bet

$0.30

per spin

Reels

243 lines

Player rating

3.8 ★

18 votes

DEMO Play free, no signup

Play'n Go

Embed on your site

3.8 / 5

18 ratings

User ratings are shown separately from the Slot Score unless stated otherwise.

Five weighted signals shape the composite. Four context signals refine ties. See how we rate for the full methodology.

Payouts & RTP9/10

RTP 96.2% → 9.0/10

Volatility8/10

medium → 8.0/10

Win Potential7.6/10

x6000.00 (6000×) → 7.6/10

Features10/10

22 features → 10.0/10

Game Mechanics9.2/10

f=22 r=7 p=n/a → 9.2/10

Context signals (tie-breakers)

Layout9/10

7x7 → 9.0/10

Bet Flexibility6/10

0.3–150 (×500) → 6.0/10

Provider Reputation6.5/10

provider avg 6.5 → 6.5/10

Popularity2.5/10

synthetic proxy → 2.5/10

Popularity blends real player search demand (~30 markets) with a catalogue-derived proxy; games without measurable search demand use the proxy alone. Not live play telemetry.

Cite this score

SlotRanker Score: 77 — Sparky and Shortz Hidden Joules by Play'n Go

https://slotranker.com/play-n-go/sparky-and-shortz-hidden-joules#score

How to cite

Slot Summary

The gap between story-led sequels and mechanics-first grid slots is where Sparky and Shortz Hidden Joules sits. Play'n GO brings its two droids back for a planetary rescue mission, then makes the 7x7 cluster system central to their work. Cascades charge a Boost Meter, Feature Wilds alter the grid, and collecting four charges calls in a 2x2 Sparky Wild.

How It Plays

Wins form as clusters across the 7x7 grid rather than along fixed paylines. Winning symbols vanish, replacements fall into their positions, and another qualifying cluster continues the same paid sequence.

The grid also accepts oversized symbols in several shapes. Their presence changes how much space one symbol occupies, while repeated removals keep feeding the Boost Meter during an active cascade chain.

Theme & Atmosphere

Sparky and Shortz return as droids trying to rescue exotic creatures and recover precious materials from a distant planet facing a catastrophic event.

The sci-fi premise gives the electrical terminology a functional role. Joules, charging, voltage, and powered wilds connect the mission narrative directly to the grid's activity.

Futuristic Food UFO Monsters Asia Sci fi

Features & Win Potential

A winning cluster that includes a Special Wild activates one of four effects after the remaining cascades resolve. The effect may add mega symbols, wilds, removals, or symbol replacements.

Collecting four Feature Wild charges summons a 2x2 Sparky Wild after the cascade sequence ends. This creates a second objective beside forming immediate clusters and charging the Boost Meter.

Spec sheet

Sparky and Shortz Hidden Joules at a glance.

Identity

Slot nameSparky and Shortz Hidden Joules

StudioPlay'n Go

Released6/28/2023

Math

SlotRanker Score77

RTP96.2%

VolatilityMedium volatility

Max win6,000×

Bet range$0.30 – $150.00

Player rating3.8 / 5 · 18 votes

Format

Reels7

Paylines243

Layout7x7

Expected average based on this slot's 96.2% RTP — individual sessions vary with volatility.

Bet per spin

Spins per hour400

Session length (hours)

Cost per hour$4.56

Cost per session$4.56

Estimate only, for entertainment purposes — treat gambling as entertainment, not a way to make money, and set a budget you can afford to lose.

How long could a bankroll last on Sparky and Shortz Hidden Joules? We simulate thousands of sessions from this game's published RTP and volatility — the long-run math, not a prediction of your next spin.

Bankroll ($)Bet per spin ($)Speed

Volatility tier: Medium

Running simulation…

How this works

Each simulated spin either misses or returns a win drawn from a log-normal distribution, with the hit rate and spread set by the slot's volatility tier (Medium). The model is calibrated so the average return equals this slot's published RTP (96.20%), with wins capped at its top multiplier (6,000×).

This is a simplified, parametric model of the game's math — not its real paytable. It exists to make the house edge visible over many sessions, so the numbers above are averages across thousands of runs, never a forecast of one.

This is math, not a prediction. Real sessions vary wildly, and no strategy changes a game's built-in house edge. Play for fun, set limits, and never bet more than you can afford to lose.

Where to play Sparky and Shortz Hidden Joules

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Compare Sparky and Shortz Hidden Joules with other games

	Sparky and Shortz Hidden Joules Score 77This game	Space Wars XXXtreme Megaways Score 80	Reapers Score 76	Deep Space Conquest Score 72	Slurpy Score 65
Identity
Studio	Play'n Go	NetEnt	Print Studios	Urgent Games	ELK Studios
Released	6/28/2023	8/13/2024	12/13/2022	7/12/2023	8/26/2024
Math
RTP	96.2%	96.14%	94.44%	97.05%	94%
Volatility	Medium volatility	High volatility	High volatility	Medium volatility	High volatility
Max win	6,000×	14,400×	20,000×	6,400×	5,000×
Format
Reels	7	6	8	5	5
Layout	7x7	6x7	8x6	5x3	5x5
Paylines	243	117649	500	20	1
Min bet	0.3	0.4	0.25	0.1	0.2
Max bet	150	32	1	50	5
Features
Progressive	—	—	—	—	—
Wild symbol	✓	✓	—	✓	✓
Free spins	✓	—	—	✓	✓
Scatter symbol	✓	—	✓	—	—
Multiplier	✓	—	✓	—	✓
Bonus game	—	—	✓	✓	—
Respins	—	✓	—	—	—

Every number is shown as a delta against Sparky and Shortz Hidden Joules.

Comparing against

Sparky and Shortz Hidden Joules

Play'n Go

RTP

96.2%

Max win

6,000×

Score

Space Wars XXXtreme Megaways

+ Respins− Free Spins− Scatter− Multiplier

+ Bonus Game− Wild− Free Spins

+ Bonus Game− Scatter− Multiplier

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01Is Hidden Joules connected to another Sparky and Shortz game?

Yes. Play'n GO describes Hidden Joules as a sequel to Sparky and Shortz, with the two droids returning for another planetary mission.

02How does the Boost Meter work?

Winning clusters disappear and produce cascades. Those removed symbols charge the Boost Meter, which increases the win multiplier as the meter advances.

03What can the Feature Wilds do?

Four distinct Feature Wilds can introduce mega symbols, remove lower-paying symbols, create regular wilds, or replace symbols to encourage another cluster.

04What are the RTP and maximum win?

The documented RTP is 96.2%, while the maximum win is capped at x6000.00 of the stake.

Series

Sparky and Shortz

View all 2 games

Game	Year	RTP	Volatility	Slot Score
Sparky and ShortzPlay'n Go	2021	94.24%	High volatility	62
Sparky and Shortz Hidden JoulesCurrentPlay'n Go	2023	96.2%	Medium volatility	77

Sparky and Shortz
Play'n Go · 2021
RTP94.24%Score62High volatility
Sparky and Shortz Hidden JoulesCurrent
Play'n Go · 2023
RTP96.2%Score77Medium volatility