Book of Monsters - Real Money & Demo Play

Book of Monsters by Pragmatic Play is a high-volatility monster-themed slot played on a 7x7 grid, using a cluster pays system where 5 or more of the same symbol connecting triggers a payout. While the base game is simple, the free spins round introduces the Fat Symbol mechanic, where players collect symbols to upgrade its size, progressively leading to more connections. With the option to gamble on bonus rounds to increase potential this online slot provides thrills throughout.

Immersive Theme & Visuals

Book of Monsters throws players deep into a highly detailed monster filled cave, filled with spiders, ghosts as well as the Book of Monsters itself hovering next to the Reels. Played on a 7x7 grid the game features classic J,Q,K,A symbols as well as 3 unique monsters as it's premium symbols which become animated when they form a connection. All 3 of these monsters have exaggerated features, making them more endearing to players rather than scary. An eerie but subtle set of sound effects help to round out the aesthetic of this monster filled slot.

Key Features

• Cluster Pays: Form clusters of 5 or more matching symbols in connecting clusters to win.
• Free Spins Growth: Collect matching symbols to upgrade the Fat symbol and unlock additional free spins.
• Scatter Symbols: Landing four or more scatters triggers free spins.
• Fat Symbols: Oversized symbols can expand up to 7x7 spaces for larger wins during the Bonus Round.

RTP, Volatility & Stake Range

• RTP (Return to Player): 94.5%
• Volatility: High
• Bet Range: £0.20 – £5 per spin
• Max Win: 5,000x stake

How to Play Book of Monsters

1. Set your stake (min. 20p, max. £4).
2. Check the paytable and rules via the "i" or menu button.
3. Adjust settings such as audio levels using the cog icon
4. Spin the reels and form clusters of 5+ matching symbols
5. Land 4+ scatters to trigger Free Spins with the Fat Symbol feature.
6. Choose if you wish to Gamble for extra spins or a better Fat Symbol (risk losing the round if unsuccessful).
7. Collect matching symbols to upgrade the Fat Symbol’s size (from 2x2 up to 7x7) and earn additional free spins.

Symbol Breakdown

J: 0.2x for 5 connections up to 100x for 49 connections.

Q: 0.25x for 5 connections up to 125x for 49 connections.

K: 0.3x for 5 connections up to 150x for 49 connections.

A: 0.4x for 5 connections up to 200x for 49 connections.

Purple Monster: 0.5x for 5 connections up to 250x for 49 connections.

Green Monster: 1x for 5 connections up to 500x for 49 connections.

Red Monster: 2x for 5 connections up to 5,000x for 49 connections.

Bonus Breakdown

To activate the Free Spins feature, you’ll need to land 4 or more scatter symbols anywhere on the reels. Here’s how it works:

• 4 scatters = 5 free spins
• Each additional scatter = +1 extra free spin

Before the round begins, a random symbol is chosen to become the Fat Symbol—an oversized version that boosts game potential.

Gamble Option

You’ll have the choice to:

• Gamble for a higher-value Fat Symbol
• Gamble for extra free spins
• Collect the current Fat Symbol & spins

If you gamble and lose, you will forfeit the bonus round.

How the Fat Symbol Grows During Free Spins

• The Fat Symbol starts as a 1x1 (normal size) and moves randomly on each spin.
• Collect matching symbols to increase its size—up to a massive full screen, 7x7!
• Each time the Fat Symbol grows, you’ll earn +1, +2, or +3 extra free spins, keeping the round going longer.

Summary

Book of Monsters combines a playful horror theme with innovative cluster-pay mechanics for thrilling gameplay. The Fat Symbol feature in free spins keeps the action dynamic and growing. With its high volatility and 5,000x max win potential, this slot delivers exciting moments for players. The charming monster designs and engaging bonus round make it a standout choice for fans of creative, online slots.