Thunderkick

Frog Grog

Slots Video Slots Magic Nature Science Darkness Animals

Thunderkick potion slot where Wild Frogs extend multiplier-driven symbol chains

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

96.1%

return to player

Volatility

Medium volatility

variance

Max win

1,616×

top multiplier

Min bet

$0.10

per spin

Reels

23 lines

Player rating

4.0 ★

4 votes

DEMO Play free, no signup

Thunderkick

Embed on your site

4.0 / 5

4 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 96.1% → 9.0/10

Volatility8/10

medium → 8.0/10

Win Potential6.4/10

x1616.00 (1616×) → 6.4/10

Features8/10

11 features → 8.0/10

Game Mechanics5.5/10

f=11 r=5 p=23 → 5.5/10

Context signals (tie-breakers)

Layout6/10

5x3 → 6.0/10

Bet Flexibility6/10

0.1–100 (×1000) → 6.0/10

Provider Reputation7/10

provider avg 7.0 → 7.0/10

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: 68 — Frog Grog by Thunderkick

https://slotranker.com/thunderkick/frog-grog#score

How to cite

Slot Summary

Medium-volatility players who prefer a round to develop through repeated symbol replacements, rather than wait for Free Spins, are the clearest fit for Frog Grog. Thunderkick links every consecutive win to an increasing Multiplier, while Wild Frogs remove symbols from their row and column to create another refill. A random Mystery Game provides the separate Bonus Game, preserving the active Multiplier instead of moving play to a conventional Free Spins screen.

How It Plays

A winning combination clears from the five-reel layout and replacement symbols fall into the empty positions. Another win continues the same paid round without requiring a new wager.

The Wild Frog can clear its row and column after participating in the result. That wider removal creates more replacement positions than an ordinary win and can help the chain continue.

Theme & Atmosphere

Magic and Science meet in a potion laboratory filled with bottles, flasks, unusual ingredients, and a cauldron. The frog is both the central Animals figure and a working Wild Symbol.

The Darkness comes from the witchcraft setting rather than a horror story. Nature appears through moths, flowers, and frogs, all of which also matter when the Mystery Game narrows the symbol set.

Magic Nature Science Darkness Animals

Features & Win Potential

The Multiplier advances with consecutive winning replacements, moving through increasingly valuable steps before resetting. Its effect remains attached to the current sequence rather than a separate feature screen.

Wild Symbols substitute and remove neighboring symbols, while the Bonus Game may appear randomly after a non-winning end to the replacement sequence. The active Multiplier carries into that Mystery Game.

Multiplier Scatter Symbol Wild Symbol Medium/High Medium volatility 5 Reels Bonus Game RTP range 96% RTP Progressive Jackpot Substitution of wining symbols

Bonus & Free Spins

The Mystery Game is Frog Grog's Bonus Game and can activate randomly when a sequence ends without another win. It removes lower-value symbols, retains frogs, moths, and flowers, and applies a Multiplier to the resulting awards.

Spec sheet

Frog Grog at a glance.

Identity

Slot nameFrog Grog

StudioThunderkick

Released10/3/2016

Math

SlotRanker Score68

RTP96.1%

VolatilityMedium volatility

Max win1,616×

Bet range$0.10 – $100.00

Player rating4.0 / 5 · 4 votes

Format

Reels5

Paylines23

Layout5x3

Features

Themes

Expected average based on this slot's 96.1% RTP — individual sessions vary with volatility.

Bet per spin

Spins per hour400

Session length (hours)

Cost per hour$1.56

Cost per session$1.56

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 Frog Grog? 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 (96.10%), with wins capped at its top multiplier (1,616×).

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 Frog Grog

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Compare Frog Grog with other games

	Frog Grog Score 68This game	Shaman Song Score 72	Wild Unicorns Score 89	Nuwa Score 84	Garden Gladiators Score 82
Identity
Studio	Thunderkick	Red Rake Gaming	Big Time Gaming	Habanero	StakeLogic
Released	10/3/2016	3/18/2024	9/27/2023	7/30/2019	3/19/2025
Math
RTP	96.1%	95.2%	96.53%	96.57%	96.01%
Volatility	Medium volatility	High volatility	High volatility	High volatility	High volatility
Max win	1,616×	10,000×	56,800×	50,000×	10,000×
Format
Reels	5	6	5	5	5
Layout	5x3	6x3	5x3	5x3	5x3
Paylines	23	100000	4096	28	4096
Min bet	0.1	0.2	0.2	0.28	0.2
Max bet	100	1	8	1400	20
Features
Progressive	✓	—	—	—	—
Wild symbol	✓	✓	✓	✓	—
Free spins	—	✓	✓	✓	✓
Scatter symbol	✓	✓	✓	✓	✓
Multiplier	✓	✓	✓	✓	✓
Bonus game	✓	✓	—	✓	✓
Respins	—	✓	—	—	—

Every number is shown as a delta against Frog Grog.

Comparing against

Frog Grog

Thunderkick

RTP

96.1%

Max win

1,616×

Score

+ Free Spins+ Respins− Progressive

+ Free Spins− Progressive− Bonus Game

+ Free Spins− Progressive

+ Free Spins− Progressive− Wild

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01How does the Multiplier work in Frog Grog?

Consecutive wins raise the Multiplier through a fixed ladder that reaches 7x. The value resets when the chain ends and a fresh paid spin begins.

02What does the Wild Frog do?

The Wild substitutes in paying combinations, then removes other symbols from its row and column. New symbols fall into those spaces, creating another chance to continue the round.

03Does Frog Grog have Free Spins?

No. Frog Grog uses a random Mystery Game instead, alongside replacing symbols, Wild Frogs, and the increasing Multiplier active during a chain.

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