Book Of Monsters
- RTP
- 95.50%
- Volatility
- HIGH
- Max win
- 5,000×
- Hit freq
- -
- Grid
- -
- Bet
- -
- Released
- 2025-03-17
A playable demo is not available in your region.
Our take
A high-volatility, creature-themed cluster-pays slot from Pragmatic Play with 95.50% RTP and 5000× max.
Book of Monsters takes the Book of… genre and reinvents it for a Reactoonz-style aesthetic, swapping paylines for cluster mechanics. The 7×7 grid is spacious and creates visual impact, though it requires 5 or more matching symbols clustered vertically or horizontally to form a win. No wild symbols exist; instead, FAT symbols grow larger during the free spins round, potentially covering the entire grid for maximum payouts.
The levelling system during bonus play means each cluster cleared advances your level, unlocking higher-value FAT symbols—this adds a sense of progression. The 95.50% RTP is mid-range, and high volatility means you'll experience extended dry spells, but cluster cascades can deliver chains of payouts that feel explosive. At €0.20 to €240 per spin, the bet range spans all bankrolls. Max win of 5000× is solid for high volatility; the largest FAT symbols can theoretically contribute to larger totals with ideal layouts.
Pros
- 7×7 grid offers visual sprawl and room for epic cascade chains
- FAT symbol growth in free spins creates unique progression mechanic
- No wilds streamlines the mechanic; clusters are pure symbol-matching
- Levelling system rewards free spins exploration
- €0.20 minimum bet suits conservative players
Cons
- 7×7 grid can feel intimidating to new cluster-pays players
- High volatility means frequent long dry spells between clusters
- 5000× max win is lower than competing high-volatility games
- No wild symbols limit creative combo potential
Math & maxes
Math breakdown
- Volatility score
- 3 / 5
- Max win
- 5,000x the stake
Gameplay video
Videos open in-place on click. Some uploaders disable embedded playback — those will redirect to YouTube.
FAQ
How does cluster pays work?
Matching symbols must be adjacent (touching horizontally or vertically) in clusters of 5+. Both orientations count.
What are FAT symbols?
Oversized symbols that appear during free spins, growing larger with each level—potentially covering up to 7×7.
How does the levelling system work?
Each cluster cleared during free spins advances your level; higher levels unlock bigger FAT symbols for more payouts.
Can you win without FAT symbols?
Yes, standard clusters of 5+ matching symbols pay in the base game and free spins.
What's the max win?
5000× your bet is the base cap; FAT symbols covering the grid can contribute to larger total payouts.
