Book of Monsters
by Pragmatic Play — very high volatility, 5,000x max win
About Book of Monsters
Monster-themed cluster pays slot with the unique Fat Symbol mechanic — during free spins, a chosen symbol starts at 1x1 and grows by collecting matching symbols up to 7x7. Pre-Bonus Gamble lets you risk for more spins or a higher-value Fat Symbol. 4-7 scatters trigger 5-8 free spins. Hit frequency 1 in 4.31.
You can play Book of Monsters right here at LOL Casino with crypto. No downloads needed — it runs in your browser on any device. Pragmatic Play builds games that are independently tested and certified.
The RTP sits at 96.50%, and the max win goes up to 5,000x your bet. Very High volatility means wins come less often but hit harder.
Getting Started
Find Book of Monsters in our lobby or search for it by name. If you're logged in, you can jump straight into real play. Some games also offer a free demo so you can try before you bet.
We accept Bitcoin, Ethereum, USDT and more. Deposit, play, and withdraw — all in crypto, no bank accounts needed.
Play Book of MonstersWhy Crypto?
Playing with crypto at LOL Casino means fast deposits, instant withdrawals to your own wallet, and no middlemen. Your balance is yours.
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Frequently Asked Questions
What is the Fat Symbol mechanic in Book of Monsters?
During free spins, a chosen symbol starts at 1x1 size and grows by collecting matching symbols up to 7x7. The larger the Fat Symbol becomes, the more winning combinations it can create on the board.
How many free spins can I trigger in Book of Monsters?
Landing 4 scatters gives you 5 free spins, while 7 scatters awards 8 free spins. The more scatters you collect, the more spins you receive.
What does the Pre-Bonus Gamble feature do?
Before free spins begin, you can risk your bonus to either increase your free spin count or upgrade to a higher-value Fat Symbol. You can accept the original bonus or gamble for potentially better rewards.
What is the maximum win possible in Book of Monsters?
The maximum win in Book of Monsters reaches 5,000x your stake. With a very high volatility rating, big wins typically require the Fat Symbol to grow significantly during free spins.
How often do wins occur in Book of Monsters?
Book of Monsters has a hit frequency of 1 in 4.31 spins, meaning you land a win roughly once every four to five spins on average.
