Popok Gaming

Book of Sherlock

Slots Video Slots Mystery Book Luxury Detective Europe Guns

Detective mystery shaped through the established Book slot formula

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

96.09%

return to player

Volatility

High volatility

variance

Max win

5,000×

top multiplier

Min bet

$0.02

per spin

Reels

10 lines

Player rating

4.0 ★

10 votes

DEMO Play free, no signup

Popok Gaming

Embed on your site

4.0 / 5

10 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 96.09% → 9.0/10

Volatility9/10

high → 9.0/10

Win Potential7.4/10

x5000.00 (5000×) → 7.4/10

Features4.5/10

6 features → 4.5/10

Game Mechanics4.2/10

f=6 r=5 p=10 → 4.2/10

Context signals (tie-breakers)

Layout6/10

5x3 → 6.0/10

Bet Flexibility8/10

0.02–25 (×1250) → 8.0/10

Provider Reputation6.5/10

provider avg 6.5 → 6.5/10

Popularity5/10

synthetic proxy → 5.0/10

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 — Book of Sherlock by Popok Gaming

https://slotranker.com/popok-gaming/book-of-sherlock#score

How to cite

Slot Summary

Sherlock Holmes, Dr. Watson, and a watchful villain carry PopOK Gaming's Book of Sherlock into a smoke-lined English mystery rather than a generic treasure hunt. The familiar Book formula supports that detective setting: clues can lead to Bonus Spins, while the Book serves as both Wild and Scatter. Free Spins then assign one regular symbol a larger role, expanding it across complete reels wherever it appears.

How It Plays

The base game uses 10 fixed paylines across a 5x3 layout. Matching symbols form line wins, while the Book Wild can replace ordinary symbols and help complete those combinations.

Book symbols also contribute to separate goals. A qualifying group opens Free Spins, while clue collection provides another route into Bonus Spins without changing the underlying line-pay structure.

Theme & Atmosphere

The Detective and Mystery themes center on Sherlock Holmes, Dr. Watson, clues, and an opposing villain. PopOK Gaming presents the case through smoke-lined English streets rather than an abstract Book setting.

Europe, Luxury, and period crime imagery support the investigation. Watches, letters, telephones, pipes, and pistols give the case recognizable props without displacing the main Holmes characters.

Mystery Book Luxury Detective Europe Guns

Features & Win Potential

The Book performs two jobs as the Wild Symbol and Scatter Symbol. It can replace regular symbols in ordinary combinations, then switch roles when enough copies land to award Free Spins.

Expanding Symbols alter the bonus round more substantially. One paytable symbol is selected for the feature, expands across complete reels when present, and pays without needing to follow an ordinary payline pattern.

High volatility Free Spins Scatter Symbol Wild Symbol Book Of...Expanding Symbols

Bonus & Free Spins

Landing at least 3 Books starts Free Spins, with the opening award determined by the number of Books in view. The selected expanding symbol remains active through the round, and further Books can retrigger additional spins.

Spec sheet

Book of Sherlock at a glance.

Identity

Slot nameBook of Sherlock

StudioPopok Gaming

Released1/14/2025

Math

SlotRanker Score68

RTP96.09%

VolatilityHigh volatility

Max win5,000×

Bet range$0.02 – $25.00

Player rating4.0 / 5 · 10 votes

Format

Reels5

Paylines10

Layout5x3

Features

Themes

Expected average based on this slot's 96.09% RTP — individual sessions vary with volatility.

Bet per spin

Spins per hour400

Session length (hours)

Cost per hour$0.31

Cost per session$0.31

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 Book of Sherlock? 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: High

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 (High). The model is calibrated so the average return equals this slot's published RTP (96.09%), with wins capped at its top multiplier (5,000×).

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 Book of Sherlock

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Compare Book of Sherlock with other games

	Book of Sherlock Score 68This game	Mystery Express Score 73	Hyde & Seek Score 67	The Alter Ego Score 75	Cluedo Cash Mystery Score 69
Identity
Studio	Popok Gaming	IGT	Massive Studios	Pragmatic Play	WMS
Released	1/14/2025	4/23/2020	2/23/2025	2/8/2024	1/15/2021
Math
RTP	96.09%	96%	96.59%	96.07%	96.51%
Volatility	High volatility	Medium volatility	—	High volatility	Medium volatility
Max win	5,000×	41,667×	2,000×	10,000×	3,750×
Format
Reels	5	5	5	5	5
Layout	5x3	5x3	5x4	3-4-4-4-3	5x3
Paylines	10	30	—	576	20 (Bothway)
Min bet	0.02	0.3	0.1	0.2	0.2
Max bet	25	600	100	240	200
Features
Progressive	—	—	—	—	—
Wild symbol	✓	✓	✓	—	—
Free spins	✓	—	✓	✓	✓
Scatter symbol	✓	—	✓	✓	✓
Multiplier	—	✓	—	—	✓
Bonus game	—	✓	—	—	—
Respins	—	—	—	—	—

Every number is shown as a delta against Book of Sherlock.

Comparing against

Book of Sherlock

Popok Gaming

RTP

96.09%

Max win

5,000×

Score

+ Multiplier+ Bonus Game− Free Spins− Scatter

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