Book of Monsters Slot Review

Home » Book of Monsters Slot Review
Sort by:

Play Book of Monsters Slot Demo Here

  • Slot Title: Book of Monsters
  • Software Developer: Pragmatic Play
  • Bonus Buy Slot: Yes 
  • Reels: 7
  • Rows: 7
  • Paylines: Cluster Paylines
  • Max Win: 5,000x
  • Max Win Chances: 1/21,220
  • Average RTP Percentages: 97.00% to 99.60%
  • Game Volatility: High (10/10)
  • Min/Max Bet: £0.10 to £250
  • Min/Max Bonus Buy Bet: £10 to £25,000
  • Release Date: March 27, 2025 – Out Soon!

Book Of Monsters Slot – Overview

Another exciting prospect brought to you by Pragmatic Play, Book of Monsters is a new fresh non UK slot that uses cluster pays mechanic, the game offers a super exciting progressive aspect which allows you to grow a fat symbol throughout the bonus rounds, creating larger wins. It is also a bonus buy slot UK, which means you can buy direct access to the hugely exciting bonus feature for a set fee.

Book of Monsters slot gameplay

Book of monsters Gameplay Features and Mechanics

Book of Monsters is set in a neon illuminated cave with lots of monsters, the colours and soundtrack offer a nice playful feel to the game which helps keep you engaged.

Book of Monsters is made of a 7×7 grid and primarily focuses on a Fat Symbol mechanic which adds a level of progression and excitement.

  • Game Symbol:

Low paying game symbols include Card symbols J,Q,A,K

Higher symbols are purple, green and red monsters

Depending on the cluster win size payouts can range between 0.2x all the way up to 5000x

  • Features:

Unlike most other slot games, Book of Monsters gameplay revolves around the cluster wins and Fat symbols to help win in play

  • Ante Bet; players can choose to select ante bet, in turn double their stake, which will increase players chances of landing the feature by 7 times.
Book of Monsters paylines

Free Spins & Special Features

By landing between 4 and 7 scatter symbols you can trigger the feature, landing between 5 and 8 free spins, Players are then given a chance to gamble the win further, you options are;

  • Gamble for more free spins
  • Change up fat symbol
  • Alternatively just collect and begin the feature.

Fat Symbol Progression System

To start the Fat symbol will start as a 1×1 multiplier, this symbol will move on each round. The idea of the feature is to collect matching symbols to your Fat Symbol which in turn will help increase its size.

Collect 30 symbols which grows symbol to 2×2

Collect 27 further symbols which grows to 3×3

Collect 24 further symbols which grows to 4×4

Collect 20 further symbols which grows to 5×5

Collect 16 further symbols which grows to 6×6

Collect 12 further symbols which can grow to the maximum capacity 7×7.

By leveling up your Fat Symbol you will also gain 3x free spins in turn continuing the progression.

Bonus Buy

For the price of 100x the stake, the player can buy their way directly into the feature rounds of the game, this will trigger between 4-7 scatter symbols to appear on the grid which will decipher her the amount of free spins you collect.

Book of Monsters Free Spins rules

Pros To Book Of Monsters Slot

  • Playful & engaging Game design and soundtrack.
  • Set to be released at USA casinos for UK players which offer huge welcome bonuses and free spins.
  • Exciting Cluster pays feature.
  • Fat symbol, Progressive feature.
  • Can be played at EU casinos that accept UK players which offer high RTP percentages up to 99.60%.
  • Bonus Buy feature allows players to jump straight into high risk/high reward action.
  • High RTP & Potential Max win potential.

Potential Cons to Book Of Monsters Slot

  • Could be potentially boring gameplay.
  • The gambling feature could mean you finish the feature with nothing.
  • Bonus buy feature can by a large risk for players.
  • Highly volatile game play might not be suitable for everyone.

At Daily Star Casinos, our experts have been dedicated to providing the most up to date and accurate online casino advice and reviews. Since our launch in 1978 we have consistently offered expert guidance and relevant news on new online casinos offering new online slots, helping UK players find non UK casino sites which are licensed and trusted. Our long standing commitment ensures you receive the best information to make informed decisions and enjoy a safe gambling experience.

About our Author

John Davis

John Davis

Hello. This is John Davis, currently residing in the UK. I graduated from the London School of Economics back in 2006. After completing my Bachelor’s Degree, I then went onto further studies and got a Master’s in Computer Science. Before later earning a Doctorate in Artificial Intelligence. This included picking up top grades in Machine Learning and Data Analysis. During the period of my studies, I was able to spend time collaborating with leading experts, whilst also gaining knowledge and an interest in the Gambling industry. This has since seen me spend extended periods of time working across the online casino industry over the last decade, before now joining the expert team here at the Daily Star.