loader search icon
Popular pages
Our top casino picks for United States of America 🏆
Book of Madness

Book of Madness

rating star rating star rating star rating star rating star rating star

Get ready for the Book of Madness and stumble across endless treasures with wilds, free spins and wins of up to 5,000x your stake.

play button icon Play for real

Book of Madness Review

Responsible Gambling

We are committed to ensuring online gambling is enjoyed responsibly. You have to be 18 years or older to access our free games. Please confirm that you are at least 18 years old.

Affiliate Disclosure: We at CasinoWow, want to ensure that you will find only licensed and regulated online casinos reviewed or recommended by our experts. However, our content has affiliate links, meaning we may receive a commission payment when a player registers or deposits at a chosen online casino. This is at no additional cost to you and should not affect your gambling preference for a casino.

Slot Overview

slot machine icon Name

Book of Madness

chef hat icon Released


customer icon Provider

Merkur Gaming

platform icon Platform

Desktop, Tablet, Mobile

web design icon Occasion

Halloween Slots

Slot Details

RTP icon RTP


Volatility icon Volatility


Jackpot icon Jackpot

5000x bet

paylines icon Paylines


Reels icon Reels


Rows icon Rows


Min. bet icon Min. bet


Max. bet icon Max. bet



Game Rating


casino-rating-play1.svg Graphics

rating star rating star rating star rating star rating star rating star


Sound Effects

rating star rating star rating star rating star rating star rating star


Loading Time

rating star rating star rating star rating star rating star rating star


Game Features

rating star rating star rating star rating star rating star rating star


Big Win Potential

rating star rating star rating star rating star rating star rating star


Mobile Gaming

rating star rating star rating star rating star rating star rating star


The Overall Rating of this casino game was calculated based on our research and data collected by our casino games review team. Learn more about Our Review Process

Game Review

Book of Madness Slot

The online casino industry is continuously growing with more games being added to the list of thrilling slot options to choose from. If you enjoy games that come with a little more of a crazy, asylum theme then you will love Book of Madness from Merkur Gaming.

This 5 reels and 10 paylines game is a thrill to play any time of day or night and can make any time of year feel like Halloween. It’s the ideal slot to play if werewolves, haunted halls and big wins are what you’re after.

It also has no lack in features and wins, with the opportunity to trigger mega wins of up to 5,000x your stake.

Theme, Soundtrack and Symbols

The Book of Madness is one of those slots that will thrill any player who loves the idea of crazy, horror themes. If the Joker is your favourite character in Batman or a mental asylum doesn’t give you the chills then Book of Madness is a must, especially with the spooky nurse, the wolves and the madness you’ll find on the reels.

This slot is about blood, gore and all things horror. The backdrop of the slot sends you straight into what appears to be the halls of an abandoned hospital. Here you will find creatures that will send a shiver down your spine on the reels. The low-value symbols are card royals that have been given a spooky makeover.

The high-value symbols include needles with a neon liquid, blood-spattered hospital beds, a nurse with neon eyes and wolves. The horror-theme soundtrack adds to the feel of the slot, creating an authentic gaming experience.

Game Mechanics

Book of Madness is a 5 reels, 3 rows and 10 paylines video slot powered by Merkur Gaming. It is beautifully done with spectacular graphics and an exciting theme.

It can be played from anywhere at any time from as little as €0.50 per spin to a maximum of €5,000 per spin. The slot comes with a Max Bet and an Autoplay feature. The latter enables you to play the maximum of up to 250 spins in a row on automation. Take note, this feature is not available in all regions.

Book of Madness is a medium volatility video slot with a return to player percentage of 96.15%. It awards the occasional small win and can pay out big wins of up to 5,000x your stake which can be really promising if you’re a high roller playing at the max bet or within the higher betting range.

Special Features

The Book of Madness slot has a select range of features that keep you captivated. This includes the wild, free spins and gamble features.

The Wild

The wild of the slot is the book and it is also the scatter. It can substitute for any other symbol in the game to provide you with bigger and better wins.

Free Spins

The free spins are activated when you land three or more scatters on the reels. You are then awarded 10 free spins. When the spins start, the book will open and reveal one special symbol, chosen from the range of symbols on the reels. This symbol will act as an expanding symbol to cover the reels.

Gamble Features

There are two gamble features, namely the card gamble and the ladder gamble.

Card Gamble – You can click on the gamble button to play this feature. You bet on the colour of the next card. If you win then you double your winnings.

Ladder gamble – Click on the gamble button to enter this feature. If you win you will land on the highlighted step above the current one, a loss means stepping one down.

Take Note: The gamble feature is not available for high wins or during Autoplay mode.

Play ‘On The Go’

In this day and age, it is expected to be able to play your games on the go. Book of Madness is relatively new and created using the latest HTML5 technology. Enabling you to play this horror-themed slot on any desktop, tablet or mobile device.

You can expect a smooth gaming experience with crisp, clear graphics and sounds on any Android or iOS device. For mobile users, the same experience awaits as for desktop users which includes the same horrific graphics, sounds and gameplay.

It also includes the same exciting bonus features and opportunities to win. The only difference you might notice will be a slight layout change which is done to enhance the gaming experience.

CasinoWow Game Verdict

Book of Madness is one of the best horror-themed slots created by Merkur Gaming. If you’re looking for a slot to play this Halloween or any time of year that isn’t soft and sweet, then Book of Madness is it.

The theme, visuals and sounds will immerse you in a world of spooky where you can enjoy medium volatility gameplay and stand a chance to win up to 5,000x your stake. It comes with wilds, free spins and gamble features that will keep you captivated.

CasinoWow highly recommends Book of Madness for a crazy slot adventure.

Anything incorrect or missing?

user avatar

Game Review by Niki

CasinoWow Contributor

Hey, there! It’s Niki! My power is in playing online casino games and knowing what’s best in each. I help in the creation of the most reliable casino guides to support players and get them well-prepared for their gambling time online. I am dedicated to helping my Wow Team stay on top of the game as being the SEO guru of CasinoWow!

Book of Madness FAQs

What is the maximum payout for Book of Madness?

With the Book of Madness from Merkur Gaming you have the opportunity to trigger maximum payouts of up to 5,000x your stake.

Can I play Book of Madness for free?

Yes, Book of Madness does have a demo version. You can try the demo/free to play version of the game where you can explore the features and theme.

Can I play Book of Madness on mobile?

Yes, Book of Madness is created using the latest HTML5 software enabling you to play it on any desktop, tablet or mobile device.

Can I take advantage of casino bonuses in this game?

Yes, with most online casinos you have the opportunity to claim bonuses that can be used across a variety of games which include Book of Madness. Make sure to read the terms and conditions for game exclusions.

Play Book of Madness for Real Money

Most popular

scroll next icon
scroll previous icon

Book of Madness

CasinoWow.com Cookies

We use 🍪 cookies to improve your user experience. By continuing to use this site, you are agreeing to our use of cookies as described in our Cookie Policy.



Be the first to get exclusive bonuses and WOW casino promotions! Get access to our new online casinos, top stories and special iGaming events for FREE.