Review

Book of Shadows: Slot RTP, 30,338x Cap and Volatility

In short — our verdict: 7.0/10 — Nolimit City puts four figures on its own game page in machine-readable form. no other studio here publishes that set: Play'n GO gives a return set and a volatility figure of its own, and its two document editions disagree about one of them. They are a 96.01% return, a 30,338x ceiling, volatility as the number 15.96 and a hit frequency of 33.33%. The catch is that you cannot open its demo without an account.

Four of the seven studios here publish a return figure and five publish some rating for risk, but only three do both. Only two put a NUMBER on it: Nolimit City on its own game page, and Play'n GO in a document whose two editions disagree. Nolimit City gives you four numbers, machine-readable: the return is 96.01%, the ceiling 30,338x, the volatility 15.96 and the hit frequency 33.33%. That ceiling is the highest published here — six times the 5,000x that Book of the Fallen caps at and that Relax Gaming quotes for Book of 99 inside its free-spins description, and still above the 25,000x of Book of Dead's German build — and three games publish none at all. The game has been out since .

By Why trust us: how we test

Published · Last updated

7.0/ 10

  • Return transparency8.0
  • Ceiling clarity8.0
  • Feature depth6.0
  • Bet range7.0
  • Documentation6.0
Table of contents

Book of Shadows Strengths and Weaknesses

Pros: What Works Well

  • Pro: Volatility is published as a NUMBER, 15.96, in the machine-readable block of the studio's own game page. Play'n GO publishes a volatility number too, in its own game record, but its 2022 and 2026 documents give 10 and 7 — here the figure does not contradict itself
  • Pro: The hit frequency is published too, at 33.33%, so you can see how often something lands rather than guessing
  • Pro: The ceiling is 30,338x the bet, six times the 5,000x Book of the Fallen caps at flatly and the figure Relax Gaming prints for Book of 99 inside its free-spins description, and above Book of Dead's 25,000x German build
  • Pro: Every figure sits in the page's own markup, so it can be checked without trusting a catalogue

Cons: What Holds It Back

  • Con: We could not open the demo. Nolimit City serves it through playin.com and the launcher answered that the user is not authenticated, so nothing on this page comes from our own play
  • Con: The bonus buy exists but its price is not published anywhere we could find — a gap, since price is the whole point of a buy
  • Con: A single published return leaves nothing to cross-check it against, where Book of Dead publishes five builds and two casinos running Book of Ra Deluxe publish figures that contradict each other
  • Con: No screenshots accompany this page for the same reason the demo is missing, and we would rather say so than borrow someone else's
What we tried: On 7 October 2026 we tried to open the game from the studio's own page. The demo link leads to playin.com and the age gate accepts you. Then the launcher returns a plain refusal: the user does not have an active session or is not authenticated. We did not create an account, so there is no session of ours behind this page and no frames from it. What we could verify is the data layer. The figures on this page are embedded in Nolimit City's own game page as structured values: rtp 96.01, volatility 15.96, releaseDate 2020-08-20. That is a different and better kind of evidence than a number typed into a review.

What Nolimit City Publishes, and Where

FigureValueWhere it is published
Return to player96.01%Studio game page, machine-readable
Maximum win30,338x betStudio game page, machine-readable and in the title
Volatility15.96Studio game page, as a number
Hit frequency33.33%Studio game page
Release dateStudio game page

Figures current as of ; the operator's live terms prevail.

The Numbers Nolimit City Prints Itself

Four figures sit on the studio's own page, machine-readable rather than marketing copy. They are a 96.01% return, a 30,338x ceiling, volatility of 15.96 and a hit frequency of 33.33%.

The volatility number is the unusual one. It is not the only one: Play'n GO prints 10 for Book of Dead in its 2022 rules document and 7 in the 2026 reissue. That is a different problem. Elsewhere risk is a word, if it appears at all. "Medium" on the intro screen of Book of the Fallen. "High" on Book of Tut Megaways, and "high" again in the launch release for Book of Oz. Two of the nine games here publish nothing at all — Book of Gold: Classic and Book of 99. Greentube prints a band for both of its titles, which is a level rather than a measured figure. A word cannot be compared across studios. A number can, and only two studios here give one.

A Ceiling Six Times the Catalogue Norm

Book of the Fallen caps flatly at 5,000x in its own rules. Book of 99 and Book of Oz carry the same figure, but both studios print it inside a free-spins description, and Book of Ra Deluxe is quoted as x5010 by one casino and 5000x of the LINE bet by another. Book of Shadows caps at 30,338x, roughly six times higher. The precision of the figure suggests it falls out of the maths rather than being chosen as a round marketing number.

A high ceiling is not automatically good news. It is paid for by the distribution. A 33.33% hit frequency means two spins in three return nothing, and the studio publishes that figure alongside the ceiling rather than burying it.

Reading a Hit Frequency of 33.33%

Hit frequency is the share of spins that pay anything at all, and at 33.33% this game pays on one spin in three. It says nothing about how much — a win can be smaller than the stake and still count.

Read next to a 96.01% return, the pair describes the shape of a session rather than its average: frequent small returns are not what this game is built on.

The Demo We Could Not Open

Nolimit City does not host its own demo. The play link goes to playin.com, and the launcher refuses without an account, which is why this page carries no screenshots and no session data.

We could have taken frames from an aggregator and called them ours. Everything photographed on this site comes from a studio's own client, and where that is impossible we say so instead.

The Book of Shadows Price Nobody Prints

The bonus buy is the gap. The game has one, and the price is what a reader most wants to know about any buy. We could not find it published anywhere: not on the studio page, not in a document.

It is a smaller gap than the one on Book of Ra, where the studio publishes no figures at all. But a studio that volunteers hit frequency and numeric volatility and then omits the price of its own buy has drawn an odd line.

How the Book of Shadows Ceiling Compares

GameCeilingWho published it
Book of Shadows30,338xNolimit City
Book of Ra Deluxex5010Admiral Casino UK, not the studio
Book of the Fallen5,000xPragmatic Play, in the client rules
Book of 995,000x in free spinsRelax Gaming product page
Book of Oz5,000x in free spinsMicrogaming (now Games Global) launch release

Our Book of Shadows Verdict and Rating

Verdict: Book of Shadows takes 7.0 out of 10, and what it earns is for disclosure rather than for the 30,338x ceiling. Nolimit City publishes a return, a ceiling, a numeric volatility and a hit frequency, all machine-readable on its own game page. It is the only studio here that publishes a hit frequency at all. Two things keep it from scoring higher. The price of its bonus buy is unpublished, and the demo is locked behind an account, so nothing here comes from our own play. If you want a client you can open and read before depositing, five of these nine games allow it, and of the clients whose rules we read end to end, Book of the Fallen prints the most. Book of Gold: Classic opens without an account too, and publishes no figures at all.

Key Terms Used on This Page

Hit frequency
The share of spins that return anything at all; Nolimit City publishes 33.33% for this game, so two spins in three pay nothing.
Numeric volatility
Risk expressed as a figure as well as a label — Nolimit City prints 15.96 next to the word "Extreme", and a number can be compared across titles in a way the word cannot.
Win ceiling
The maximum a single round can pay, expressed as a multiple of the bet: 30,338x.
Machine-readable value
A figure embedded in a page's own data rather than written into marketing prose, which makes it checkable.

Deposits and identity checks stay on the operator's own secure site.

Elsewhere in this catalogue, from the same section first:

What Else Do Readers Ask?

Of the five questions below, three have answers Nolimit City publishes, one is about a demo we could not open, and one is about how we report a game we could not play.

What is the RTP of Book of Shadows?

96.01%, published by Nolimit City on its own game page as a machine-readable value rather than as marketing copy in a paragraph.

What is the maximum win?

30,338x the bet, the highest published in this catalogue and about six times the 5,000x that Book of the Fallen caps at.

Is the volatility high?

Yes, and unusually it is quantified: Nolimit City publishes the number 15.96 beside the word Extreme on the same page, with a hit frequency of 33.33%.

Can you play the demo for free?

No, not without an account. The studio serves its demo through playin.com, and that launcher refused our anonymous session as unauthenticated.

How do we report a game we could not open?

We open the studio's own demo where one exists, read the rules screens, and otherwise quote only what the studio publishes — saying which is which.