Promatic Games

Book of Mystery Deluxe

Play Book of Mystery Deluxe slot by Promatic Games for free in demo mode! Explore RTP, bonus rounds, and key features before playing for real.

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SlotRanker Score

/ 99

05099

The SlotRanker Score is calculated from the visible data below. It is not affected by affiliate deals or paid placement.

How this score is built

RTP

96.24%

return to player

Volatility

Low volatility

variance

Max win

—

top multiplier

Min bet

$5.00

per spin

Reels

10 lines

Player rating

4.6 ★

20 votes

DEMO Play free, no signup

Promatic Games

4.6 / 5

20 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 96.24% → 9.0/10

Volatility6/10

low → 6.0/10

Win Potential—

no data

Features4/10

5 features → 4.0/10

Game Mechanics4.2/10

f=5 r=5 p=10 → 4.2/10

Context signals (tie-breakers)

Layout6/10

5x3 → 6.0/10

Bet Flexibility6/10

5–5000 (×1000) → 6.0/10

Provider Reputation5.8/10

provider avg 5.8 → 5.8/10

Popularity3.3/10

synthetic proxy → 3.3/10

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: 59 — Book of Mystery Deluxe by Promatic Games

https://slotranker.com/promatic-games/book-of-mystery-deluxe#score

How to cite

Spec sheet

Book of Mystery Deluxe at a glance.

Identity

Slot nameBook of Mystery Deluxe

StudioPromatic Games

Released

Math

SlotRanker Score59

RTP96.24%

VolatilityLow volatility

Max win—

Bet range$5.00 – $5000.00

Player rating4.6 / 5 · 20 votes

Format

Reels5

Paylines10

Layout5x3

Features

Themes

Expected average based on this slot's 96.24% RTP — individual sessions vary with volatility.

Bet per spin

Spins per hour400

Session length (hours)

Cost per hour$75.20

Cost per session$75.20

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 Mystery Deluxe? 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: Low

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 (Low). The model is calibrated so the average return equals this slot's published RTP (96.24%), with wins capped at its top multiplier (1,000×).

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.

Compare Book of Mystery Deluxe with other games

	Book of Mystery Deluxe Score 59This game	Ecuador Gold Score 83	Sanctuary Score 83	Pharaoh Mysteries Score 83	Crystal Skull Score 79
Identity
Studio	Promatic Games	ELK Studios	Big Time Gaming	Realtime Gaming	Endorphina
Released	—	2/19/2019	11/10/2023	4/14/2023	11/22/2022
Math
RTP	96.24%	96.1%	96.38%	96.25%	96.1%
Volatility	Low volatility	High volatility	High volatility	High volatility	—
Max win	—	—	44,070×	50,000×	—
Format
Reels	5	6	5	5	5
Layout	5x3	6x4	5x4	5x3	5x3
Paylines	10	262144	4096	10	25
Min bet	5.00	0.20	0.10	0.10	0.01
Max bet	5000.00	100.00	1.00	25.00	75.00
Features
Progressive	—	—	—	—	—
Wild symbol	✓	✓	✓	✓	✓
Free spins	✓	✓	✓	✓	—
Scatter symbol	✓	✓	✓	✓	✓
Multiplier	—	✓	✓	✓	✓
Bonus game	—	✓	—	✓	✓
Respins	—	—	—	✓	—

Every number is shown as a delta against Book of Mystery Deluxe.

Comparing against

Book of Mystery Deluxe

Promatic Games

RTP

96.24%

Max win

—

Score

+ Multiplier+ Bonus Game

+ Multiplier+ Bonus Game+ Respins

+ Multiplier+ Bonus Game− Free Spins

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