Book of Shadows Slot Review – Free Play by Nolimit City

Book of Shadows

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Book of Shadows Slot Facts

RTP96.01%
VolatilityHigh
Max Win30338x
Reels3-5
Hit Frequency33.33%
Bet Range1 – 100
ProviderNolimit City
Released2020
Expert Score9.03/10

The Book of Shadows slot from Nolimit City reaches a 30,338x max win on a 96.01% RTP, played across a shifting 3 to 5 row reel setup. A locked grimoire, an unsettling forest, and a grid you can expand yourself set this gothic-horror release apart from a typical five-reel machine.

Nolimit City hands players unusual control here, letting them pay extra to widen the board or freeze columns before a respin, which changes how each session actually unfolds. High volatility and a 33.33% hit frequency keep the tension real, but the ceiling on offer is one of the studio’s largest.

Book of Shadows Theme & Design

Nolimit City builds Book of Shadows around a dark, occult setting anchored by a mysterious grimoire, an unsettling forest, and symbolism tied to forbidden ritual, pentagrams, and cursed trinkets. The book itself doubles as the game’s central icon, hinting at hidden knowledge waiting to be unlocked. Rather than a fixed backdrop, the atmosphere is reinforced by how much control the player has over the board itself, since expanding the grid and locking columns feels like tampering with something you are not quite meant to touch. A golden, reel-spanning symbol during the bonus round adds a brighter, almost otherworldly contrast to the otherwise gloomy tone, underlining that real reward hides inside the danger.

How Book of Shadows Plays

Every round starts on a 5-reel grid that opens at 3 rows, and paying extra to activate Shadow Rows grows it into a taller four-row or five-row layout before the spin even begins, instantly changing how much of the board is in play. After a normal spin finishes, the Lucky Locks option lets you lock chosen columns where they sit and pay again to respin only the rest of the board, a useful way to hold onto strong symbols or extra scatters. The book icon does double duty as wild and scatter, and landing at least three of them opens the free spins round, with how many spins get handed out adjusting to whatever grid size was active when it triggered. A Golden symbol is chosen at random to spread across its whole reel during the bonus whenever a payout is possible, and players unhappy with that first pick get one redraw for a stronger option. A gamble wheel also lets base-game wins be risked for a route straight into the bonus.

RTP, Volatility & Win Potential

Book of Shadows carries a 96.01% RTP, just above the industry average of around 96%, split between 58.7% generated in the base game and 37.31% coming specifically from the bonus round, a sign of how much of the return lives inside the free spins feature. High volatility and a 33.33% hit frequency mean winning spins arrive a little less than once every three tries, with longer, drier stretches to be expected between rounds. A 100x-the-bet result lands roughly once every 843 spins, and the free spins round itself arrives naturally around once every 154 spins. When everything lines up, the maximum payout reaches 30,338x the stake.

Our Verdict on Book of Shadows

This Book of Shadows slot review is for players who like having a say in their own variance, since paying to expand the grid or lock columns is rare player agency for this genre. The genuine strength here is that flexibility, letting a session lean toward more paylines or a safer hold whenever it makes sense. The honest catch is that High volatility combined with a bonus round that only lands naturally around once every 154 spins can make for a long wait between the moments that matter. A free demo of Book of Shadows on this page is worth trying before deciding if that patience suits you.

Book of Shadows RTP, Payout & Specs

RTP (overall)96.01%
RTP — base game58.7%
RTP — bonus37.31%
VolatilityHigh
Hit frequency33.33%
Max payout30338x bet
Max win probability1 in 0
Free spins trigger1 in 154
Reels / rows3-5
Min / max bet1 / 100
TechnologyHTML5
PlatformsDesktop, Mobile
LicensesUKGC
ProviderNolimit City
Release date20 Aug 2020
Bonus buyYes

Book of Shadows Bonus Features & How They Work

Book of Shadows  — Shadow Rows

Shadow Rows

Paying an extra cost before a spin lets you grow the grid from its standard 3 rows up to a taller four-row or five-row layout. Doing so adds more paylines to the same reels, which pushes up how often a winning combination lands and lifts the payout ceiling that spin can reach, trading a bigger stake for more coverage of the board.

Book of Shadows  — Freespin with Golden symbol

Freespin with Golden symbol

Landing at least three of the book scatters, which double as wilds, hands out ten free spins built around a standout Golden symbol. Before the round starts, that Golden symbol is drawn at random, and a single redraw is available for anyone chasing a stronger pick. Whenever a payout is possible, the chosen Golden symbol spreads across the whole reel. The grid size active going into the round, based on whichever Shadow Rows setting was active, adjusts exactly how many spins get awarded.

Book of Shadows  — Gamble

Gamble

Base-game wins do not have to be collected straight away. A coin-flip gamble offers a double-or-nothing shot at any payout, while a separate wheel option lets that same win be risked for a chance to enter the free spins round instead of just doubling the cash.

Book of Shadows  — Nolimit Bonus - Feature Buy functionality

Nolimit Bonus - Feature Buy functionality

Rather than waiting for the book symbols to land naturally, players can pay to enter the free spins round immediately, with more than one purchase option available depending on how much of the bonus experience they want unlocked straight away. This trades an upfront cost for guaranteed access to Shadow Rows and the Golden symbol mechanic without relying on chance.

In-Game Screenshots

What the Experts Say — Average 9.03/10

8.4

Without any data to back it up, we feel comfortable in saying that expanding symbols is the most common feature in the industry. Perhaps sticky wilds and progressive multipliers are up there, but “Book of” slots are released almost daily. Thus, there’s no immediate excitement when seeing another one pop up on our radar, but Book of Shadows changed that quickly. Not only is it a thrilling setting, but NoLimit has made sure to innovate on this commonly used mechanic. Allowing players to choose the amount of rows is a brilliant addition, giving us a sense of control in how we want to play the game. Furthermore, it’s great to be able to gamble for Free Spins and not only the standard “double the win”. Nonetheless, the game is, in its core, a book game, so we’re not seeing something completely new here. Book of Shadows by NoLimit City is a standard book game in its core, but made very interesting by some interesting features.

10

This very creepy slot is very well designed. The theme won’t be to everyone’s taste but if you like the horror genre then the Book of Shadows slot should appeal. The soundtrack in particular is chilling. Book of Shadows has similarities to Play ‘n GO’s Book of Dead (special expanding symbols) but you can exchange the symbol if you don’t like the one you’ve landed (basically you gamble for a higher value symbol). However, this game is also high variance which can mean lengthy lean spells. Saying that, Book of Shadows blows Book of Dead and Novomatic’s Book of Ra Deluxe out of the water with top payouts of 30,338 x your total stake. The 2 mentioned offer 5,000 x stake max wins. If you enjoy volatile, horror-themed slots, Book of Shadows ticks all the right boxes. For the bigger payouts, you will need to choose playing with 5 rows and 20 paylines. Just be careful as it’s classed as ‘extreme’ by Nolimit City on the volatility front. You should also try other Nolimit City slots with El Paso Gunfight and Fire in the Hole offering 44,440 x stake and 60,000 x stake max wins respectively.

8.5

The incremental additions found in Book of Shadows offer a thrilling take on the original formula, resulting in another quality game from Nolimit City.

9.2

Book of Shadows is a 'Book of' slot game with a difference. With 10, 15 or 20 paylines, the Free Spins feature has an expanding Golden symbol which can lead to 30,338 x bet max wins.

Book of Shadows FAQ

What is the RTP of Book of Shadows?

Book of Shadows runs at a 96.01% RTP, made up of 58.7% from the base game and 37.31% from the bonus round, with High volatility and a 33.33% hit frequency.

Can I play Book of Shadows for free?

Yes, a free demo of the Book of Shadows slot is available on this page, letting you test Shadow Rows and Lucky Locks without wagering real money.

What is the max win in Book of Shadows?

The maximum payout is 30,338x the stake, a ceiling that fits the High volatility label given the bonus round only lands naturally around once every 154 spins.

How do you trigger free spins in Book of Shadows?

Landing at least three book symbols, which act as both wild and scatter, opens ten free spins, with the exact number adjusting to whatever grid size is active.

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18+ | Play responsibly | T&Cs apply. Free demo slots on this page require no deposit or registration.

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