Book of Monsters invites you to explore a mysterious world where ancient lore meets monstrous legends. Developed by Pragmatic Play, this slot combines eerie visuals with captivating gameplay, drawing you into a narrative of haunted tomes and supernatural creatures.

Released on 27 March 2025, the game stands out with its striking dark fantasy theme and crisp design, all while maintaining a user-friendly interface.

Starting your adventure in Book of Monsters is simple and intuitive. Before you hit the reels, consider the following key options:

• Spin Options: You can opt for manual spins to control every move, or choose auto-spin for uninterrupted gameplay. With auto spins, you can spin 10 to 1000 auto spins. 

• Bet Options: A variety of betting levels and coin values are available, ensuring that both cautious players and high rollers can find a comfortable wagering range. Betting options start from a minimum of 0.20 to 240.00 coins per spin. 

• Turbo Mode: For those who crave a faster pace, turbo mode is at your disposal, accelerating the reel spins to boost the thrill of every session.

Book of Monsters slot comes with a 7×7 grid and uses the cluster pays mechanic that many Pragmatic Play players will find familiar, yet it introduces unique twists to elevate the gaming experience. The primary goal is to form winning combinations by aligning five or more identical symbols adjacent to each other horizontally and/or vertically. 

The higher the count of symbols involved in a winning combination, the bigger the payout awarded. Note that the highest payout that can be awarded on any spin is 5,000x the bet. To enhance the chances of landing the big wins, colossal symbols measuring 3×3, 4×4, 5×5, 6×6, or 7×7 may land at once.

Moreover, the mere fact that this is a high-volatility game means the possibility of landing valuable wins is high. The symbols that players may land  to create winning combinations include:

• Red alien 
• Green alien
• Purple alien
• Royal poker symbols

Free Spins Feature: Land three or more bonus symbols to trigger the free spins round. Landing four, five, six or seven scatters rewards you with 5, 6, 7, or 8 free spins, respectively. At the start of the feature, one regular symbol is picked to become a FAT symbol which will randomly move to different spins on each spin.

Landing more FAT symbols helps players to level up, hence increasing the size of the FAT symbol; in doing so, you receive extra free spins. Note that you can gamble the FAT symbol for the chance to receive a higher-valued FAT symbol. Also, you can gamble the initially awarded free spins for the chance to win even more free spins. The gamble game is done through the flipping of a book’s pages. 

• Ante Bet: At the start of the gaming session, players may choose between the 20x or 40x bet multiplier. The former multiplier enables the game to play normally while the latter will enhance the chances of triggering the free spins round 7-fold as the feature can be triggered by a low of 3 bonus symbols only. 

• Bonus Buy: Players may instantly trigger the free spins round by clicking the “Bonus Buy” button on the main screen and proceed to pay the stipulated purchase price of 100x the bet. 

I highly recommend Book of Monsters because its intriguing theme and creative bonus features deliver a uniquely engaging gaming experience. I appreciate the way it reimagines the classic book slot formula with its expanding symbol during free spins, adding an extra dimension of thrill to every spin.

 The balance between suspenseful gameplay and rewarding bonuses makes each session filled with anticipation and potential. Whether you’re drawn by its dark fantasy atmosphere or the lure of substantial wins, Book of Monsters is a slot that promises both mystery and excitement at every turn.