Book of Monsters Slot
| Launch Date | March 27th, 2025 |
|---|---|
| Software | Pragmatic |
| Type of Slot | Video slot |
| Theme | |
| RTP | 96.56% |
| Volatility | High |
| Reels | 7 |
| Paylines | |
| Scatter Symbols | Yes |
| Bonus Rounds | Yes |
| Free Spins Bonus Rounds | No |
| Wild Symbols | Yes |
| Maximum wager (per line) | 240 |
| Maximum Jackpot | 5000 |
| Progressive Jackpot | No |
| Practice Play Version Available? | No |
| Autoplay | Yes |
Book of Monsters, developed by Pragmatic Play, isn’t your average “Book of…” slot. Forget golden scarabs and moody tombs—this one’s stuffed with oversized Monsters, cartoonishly creepy beasts, and reels that practically bounce with unhinged energy.
Released on March 27th, 2025, this monster plays out on a chunky 7×7 grid, ditches paylines for Cluster Pays, and cranks up the volatility hard; it practically howls. The RTP is 96.56%, with a max win of 5,000x, and enough free spins and monstrous upgrades to make your head spin.
About Book of Monsters
The moment the game loads, it’s clear: this slot isn’t interested in subtlety. The backdrop feels like a deranged fairytale, the soundtrack is part monster mash, part power-up sequence, and the reels are crammed with slimy, squishy, eyeball-laden monsters who are loveable… in a “please don’t eat me” kind of way.
Pragmatic’s gone all in on the monster aesthetic, but it’s delivered with charm rather than horror. Colours pop, animations bounce, and when the features hit? It feels like you unleashed a Saturday morning cartoon version of the apocalypse.
Symbols and Payouts
Now, let’s talk symbols—the true stars of this gooey little circus:
The low-paying symbols are your classic, but chunky 10, J, Q, K, A. They award between 100x to 200x for 49 orof a kind in a cluster.
Then we’ve got the high-paying monster crew. You’ll meet three bouncy beasts in red, green, and purple, each uglier (and cuter) than the last—land 49 of a kind in a cluster for 250x to 5,000x the bet.
And at the centre of it all? The Golden Book of Monsters. Glowing eyes, creepy cover, probably cursed—just how we like our bonus symbols. This book unlocks all sorts of madness, so keep an eye out. Or two. Or even seven, depending on what’s landed.
Gameplay and Features
Book of Monsters plays on a 7×7 grid using a Cluster Pays mechanic, which means you’re not chasing paylines—you’re looking for clusters of 5+ matching symbols connected horizontally or vertically.
Stakes range from 20p to £240 per spin, which gives budget spinners and high rollers something to sink their claws into. The volatility is high, so brace yourself for dry spells—followed by explosive monster runs, if you are lucky.
The RTP is a solid 96.5%, which puts it slightly above average—so at least you know the monsters aren’t entirely out to get you.
This isn’t just spin-and-hope territory. Book of Monsters throws in some explosive twists that turn the reels into a goo-fuelled feature frenzy.
Fat Symbols
At random, the book opens and reveals a random paytable symbol: a 3×3, 4×4, 5×5, 6×6, or 7×7 symbol. These bad boys take over the screen, crush everything in their path, and can lead to absurdly high-value combos. It’s chaos—glorious, cartoonish chaos.
Free Spins
Land 4 or more Book symbols, and boom—you’re in. 8 Free Spins kick things off, but before the round begins, a random symbol is chosen as the Fat symbol throughout the free spins.
Not happy with your pick? You can gamble to upgrade the Fat Symbol or try your luck by increasing the number of free spins: high risk, high reward, total madness.
During the Free Spins, symbols matching the randomly chosen Fat symbol are collected in a meter. You proceed through levels to increase the size of the random Fat symbol. The more symbols collected, the bigger the Fat symbol becomes. The random Fat symbol begins as a 1×1 symbol but can grow to 7×7. Each level-up rewards more free spins, so the deeper you go, the more monstrous things get.
Bonus Buy
No time to grind? No problem. Buy your way into the Free Spins feature for 100x your bet. No messing around, no fluff—just straight into the monster den with your balance on the line.
Verdict ✅
Book of Monsters takes a well-worn format and tears it to bits. The cluster pays, the oversized symbols, the Fat Symbol upgrades—it’s so much fun. Pragmatic Play proves once again that you can take an old idea (hello, Book slot) and reimagine it into something unique and completely bonkers.
Keep walking if you’re looking for subtle elegance and soft piano tunes. But if you want monster mayhem, cluster chaos, and a golden book that is quite possibly cursed—or blessed, depending on your luck—Book of Monsters is well worth a spin or three.
