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Pragmatic Play Unveils Book of Monsters Slot

Pragmatic Play Unveils Book of Monsters Slot

Steven Harper • March 28, 2025

Key Highlights

Pragmatic Play has released a new cluster-pays slot titled Book of Monsters. The game introduces an innovative mechanic featuring randomly appearing giant symbols, up to 7×7 in size. During the bonus round, you can unlock additional free spins and larger symbols through a collection system. The maximum win potential is 5,000 times your bet.

Giant Symbols in the Base Game

In the base game of Book of Monsters, oversized symbols can appear on any spin. These so-called super symbols cover a random area between 2×2 and 7×7 tiles. They significantly boost your chances of winning by covering large portions of the grid, allowing for more cluster wins.

Free Spins with FAT Symbol

When you land 4 to 7 scatter symbols, the bonus game begins with 5 to 8 free spins. Before the free spins start, a random symbol is chosen as the FAT Symbol. This symbol is key to the bonus round, as it changes position on each spin and can be collected.

Gamble Feature Before Free Spins

Before the free spins begin, you have the option to use a gamble feature to upgrade the FAT Symbol or earn additional free spins. This comes with a risk: while your rewards can increase, you also run the chance of losing them.

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Symbol Collection Mechanic

During the free spins, each FAT Symbol that appears is collected in a counter. The more you collect, the larger the FAT Symbol becomes — from 2×2 up to a maximum of 7×7 tiles. With each size increase, you receive 1 to 3 extra free spins. This mechanic adds ongoing excitement and enhances your chances of winning.

More Releases from Pragmatic Play

Book of Monsters joins a series of recent titles from Pragmatic Play, such as Big Bass: Return to the Races and 5 Lions Megaways™ 2. The provider releases up to eight new slots per month. In addition to slot games, Pragmatic Play also offers live casino and bingo games — all accessible through a single API for operators.

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Our Verdict

Book of Monsters brings a fresh twist to the cluster-pays genre. The combination of random giant symbols, a dynamic free spins mode, and the ability to upgrade symbols makes the game engaging. For players who enjoy visual effects and innovative features, this slot is an intriguing choice. The maximum payout of 5,000x is solid without feeling unrealistic. Overall, it’s a strong addition to Pragmatic Play’s portfolio.