Gamomat

Book of Madness

Slots Video Slots Halloween Horror Zombie Book Darkness Animals Medicine

Hospital horror expressed through the book-game format

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

96.15%

return to player

Volatility

Medium volatility

variance

Max win

—

top multiplier

Min bet

$0.50

per spin

Reels

10 lines

Player rating

4.4 ★

5 votes

DEMO Play free, no signup

Gamomat

Embed on your site

4.4 / 5

5 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 96.15% → 9.0/10

Volatility8/10

medium → 8.0/10

Win Potential—

no data

Features8/10

13 features → 8.0/10

Game Mechanics4.2/10

f=13 r=5 p=10 → 4.2/10

Context signals (tie-breakers)

Layout6/10

5x3 → 6.0/10

Bet Flexibility8/10

0.5–5000 (×10000) → 8.0/10

Provider Reputation6.6/10

provider avg 6.6 → 6.6/10

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: 69 — Book of Madness by Gamomat

https://slotranker.com/gamomat/book-of-madness#score

How to cite

Slot Summary

A randomly selected symbol determines the main target in Book of Madness, Gamomat's hospital-horror interpretation of the book-game format. The possibility of spreading that symbol across whole reels gives the free spins their focus. The nurse occupies the highest-paying ordinary-symbol position, connecting the game's unsettling central character to its payout hierarchy.

How It Plays

Ordinary combinations run from the leftmost reel along an active payline. The nurse, werewolf, bed and blood bag can pay with two matching symbols; lower-paying symbols require more.

The book performs two jobs during ordinary play: it substitutes for paying symbols and acts as the scatter. Its presence can therefore assist a line result or contribute toward free spins.

Theme & Atmosphere

Book of Madness takes its horror from a distorted medical setting. The nurse and hospital equipment establish an uncomfortable clinical atmosphere, with treatment imagery turned into material for a scare.

Eerie music and ominous sound effects reinforce that setting. The werewolf introduces a supernatural element alongside the medical imagery, keeping the premise closer to stylized horror than a realistic hospital scene.

Halloween Horror Zombie Book Darkness Animals Medicine

Bonus & Free Spins

Three book scatters award ten free spins. Before the round starts, a paying symbol is selected; enough appearances of that symbol allow its reels to expand after ordinary line wins have been evaluated.

Spec sheet

Book of Madness at a glance.

Identity

Slot nameBook of Madness

StudioGamomat

Released10/1/2019

Math

SlotRanker Score69

RTP96.15%

VolatilityMedium volatility

Max win—

Bet range$0.50 – $5000.00

Player rating4.4 / 5 · 5 votes

Format

Reels5

Paylines10

Layout5x3

Expected average based on this slot's 96.15% RTP — individual sessions vary with volatility.

Bet per spin

Spins per hour400

Session length (hours)

Cost per hour$7.70

Cost per session$7.70

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 Madness? 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 (96.15%), 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.

Where to play Book of Madness

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Compare Book of Madness with other games

	Book of Madness Score 69This game	Dr.Franken’s Lab 777 Jackpot Score 48	Haunted House Score 82	Franksylvania Score 68	Halloween Wins 2 Score 66
Identity
Studio	Gamomat	Bigpot Gaming	Habanero	Armadillo Studios	Red Rake Gaming
Released	10/1/2019	8/17/2022	3/15/2014	10/20/2023	10/7/2024
Math
RTP	96.15%	82.29%	96.14%	94.17%	95.3%
Volatility	Medium volatility	Medium volatility	Medium/High	High volatility	Medium volatility
Max win	—	7,290×	—	2,743×	2,585×
Format
Reels	5	5	5	5	5
Layout	5x3	5x3	5x3	5x3	5x3
Paylines	10	243	25	25	50
Min bet	0.5	0.2	0.01	0.25	0.2
Max bet	5000	200	5000	100	35
Features
Progressive	—	✓	✓	—	—
Wild symbol	✓	✓	✓	✓	✓
Free spins	✓	✓	✓	—	✓
Scatter symbol	✓	✓	✓	—	✓
Multiplier	—	—	✓	✓	—
Bonus game	—	—	—	✓	✓
Respins	—	—	—	—	✓

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

Comparing against

Book of Madness

Gamomat

RTP

96.15%

Max win

—

Score

Dr.Franken’s Lab 777 Jackpot

+ Progressive+ Multiplier

+ Multiplier+ Bonus Game− Free Spins− Scatter

+ Bonus Game+ Respins

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