Book of Monsters

• Book of Monsters from Pragmatic Play plays out on a vibrant 7×7 Cluster Pays grid, offering quirky visuals, expanding symbol mechanics, and a max win potential of 5,000× your stake. With random oversized symbols, gambleable free spins, and the chance to trigger the bonus through Ante Play, this high-volatility slot adds monstrous momentum to Razed’s cluster lineup.

How to Play

• Match 5 or more symbols in a cluster, connected horizontally or vertically, to trigger wins. Symbols range from toothy cartoon creatures to glowing cards, with top payouts awarded by connecting up to 49 identical icons.
• Players can enable Ante Bet for 2× the stake, increasing the bonus hit rate from 1 in 291 spins to 1 in 42. Bonus features include random Fat Symbols in the base game and a scalable Free Spins round with retrigger potential.

Theme & Graphics

• Set inside a smoke-filled cavern beneath the hovering Book of Monsters, the game balances spooky atmosphere with playful character design. Red, green, and purple monsters smile across the grid, while the soundtrack leans whimsical over eerie. The glowing cauldron and animated symbols give the game lighthearted energy, pairing well with its evolving visual effects.

Bonus Features

1. Base Game Fat Symbols

Any pay symbol can land as a Fat Symbol measuring 3×3 to 7×7. These oversized icons substitute for clusters and may fill large parts of the grid—especially the 7×7 top-tier red monster, which awards the 5,000× max win instantly.

2. Free Spins Round

Triggered by landing 4 to 7 bonus scatters, awarding:

• 4 Scatters = 5 Free Spins
• 5 Scatters = 6 Free Spins
• 6 Scatters = 7 Free Spins
• 7 Scatters = 8 Free Spins With Ante Bet active, 3 scatters will also trigger the feature, awarding 4 Free Spins. Before the bonus begins, a Fat Symbol is chosen randomly. Players can gamble for:
• A higher-paying Fat Symbol
• Additional free spins (up to 8 total) Be warned: losing the gamble can result in the “The End” outcome, canceling the bonus round entirely.

3. Fat Symbol Growth Mechanics

The selected Fat Symbol begins at 1×1 and grows with matching symbol collection:

• +30 symbols → size 2×2, +1–3 extra spins
• +27 symbols → size 3×3, +1–3 spins
• +24 symbols → size 4×4, +1–3 spins
• +20 symbols → size 5×5, +1–3 spins
• +16 symbols → size 6×6, +1–3 spins
• +12 symbols → size 7×7, +1–3 spins The Fat Symbol moves to a random grid location each spin.

Bonus Buy Option:

• Players can trigger the bonus round directly for 100× their stake, activating 4–7 free spins with a randomly selected Fat Symbol and optional gamble choices.

Betting, RTP & Max Win

According to Roobet Casino Book of Monsters offers the following to players:

• Betting Range: $0.2 - $480
• RTP: Up to 96.50% (check deployment variant)
• Volatility: High
• Max Win: 5,000× your stake
• Bonus Hit Frequency:
• ~1 in 291 spins (standard)
• ~1 in 42 spins with Ante Bet The max win is possible in both base and bonus modes, either through filling the grid naturally or via Fat Symbol expansion.

Summary

• Book of Monsters blends cluster pays with progressive symbol growth, offering gamble features, random mega-sized symbols, and retriggerable free spins for monstrous payout potential. A playful twist on the "Book of..." genre, this Razed release is ideal for players chasing quirky grid action with high-stakes scaling.

Our Favorite Casino for Book of Monsters

If you want the best place to play Book of Monsters, Roobet is our top recommendation. With instant signup, fast crypto deposits, and a massive library of Pragmatic Play titles, Roobet delivers one of the smoothest slot experiences online. You’ll also find exclusive promotions, Roobet Rewards, and 24/7 live support making it the ideal home for spinning Book of Monsters with confidence and convenience

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