Book of Dead at Casoola Casino

At a glance

The RTP and volatility shown are the studio's usual published default settings.

How the bonus round is triggered

Three scatters award ten free spins, during which one randomly picked symbol expands.

Highest published win

The studio lists the top possible win for this game as 5,000× the stake. That number is the mathematical ceiling designed into the slot — the biggest theoretical multiplier, reachable only in an exceptionally rare, high-variance result — and not what a normal or expected session looks like. Most sessions end nowhere near it, and no guide, this one included, can forecast or affect individual results on a game driven by a certified random number generator.

The origins of the theme

Book of Dead ranks among Play'n GO's most recognisable releases. It belongs to a wider wave of Egyptian-adventure slots that borrowed from earlier games in the genre, yet it introduced a symbol-expansion feature of its own that other studios later echoed in similar games. The explorer-in-the-tomb look is pure decoration wrapped around a fairly simple, classic setup of 5 reels, 3 rows and 10 paylines, which makes it — together with Starburst — one of the most traditionally built games among the twelve Casoola titles covered in this guide.

A closer look at the mechanics

Three or more scatters (the Book symbol) anywhere on the reels award ten free spins. When the round begins, one ordinary symbol is picked at random to act as the expanding symbol for the whole feature: each time it lands on a reel during any of the ten spins, it grows to cover the full reel. That can lead to considerably bigger wins than the base game usually delivers, particularly if the chosen symbol is one of the premium character symbols and not a low-paying card symbol.

RTP and volatility in the context of this game

The certified RTP of 96.21% combines what the base game and the free spins return, weighted by how often each happens. Because the expanding-symbol free spins produce most of the bigger wins and do not come around on every spin, much of that RTP is paid out over many base-game spins, broken up now and then by a larger free-spins result.

How it stacks up against other games in this guide

Reactoonz, also covered here, is built on a completely different grid-and-cluster system; Book of Dead instead depends on an expanding symbol in free spins for its biggest moments, giving players raised on decades of classic slots a more conventional and instantly recognisable layout. Next to the Hacksaw Gaming western titles in the same catalogue, Book of Dead's high (not very high) volatility and simple paytable make it a noticeably easier starting point for someone playing at Casoola for the first time.

Thinking about strategy and bankroll

Nearly all of Book of Dead's bigger win potential sits in the scatter-triggered free spins, not in the base game, so anyone attracted by its reputation for large wins should know that base-game spins mostly serve to reach that feature rather than being where the big results tend to happen. With a plain 10-payline setup, the paytable is quick to learn even for slot newcomers: there are no cluster sizes or ways-to-win counts to work out, only standard left-to-right line matches.

Playing it on a phone

With a fairly simple 5x3 layout and modest graphics, Book of Dead is one of the lighter games in this guide and should run smoothly even on older or entry-level phones, without the heavier graphical load that some newer cascading-grid slots demand.

The studio that made it

Play'n GO, a company founded in Sweden, built a large part of its early name on games like Book of Dead, which became one of its flagship releases and is still among its most widely carried games at online casinos years after launch. The studio has kept releasing adventure-and-exploration slots since then, but Book of Dead's mix of a simple reel layout and an expanding free-spins symbol has held up so well that newer releases have not pushed it out of most casino lobbies — Casoola's reported library included.

Fairness certification and RNG checks

Play'n GO games, Book of Dead among them, are certified for RNG fairness and payout accuracy by accredited independent test labs as a condition of the studio's own licences in the jurisdictions where it operates. That certification belongs to the game itself, not to whichever casino hosts it — a useful point given the doubts about operator identity raised in the full Casoola review. Bear in mind too that the feature always awards ten free spins, however many scatters beyond the minimum of three appear when it triggers; some other studios' games increase the number of free spins for extra scatters, but this one does not.

Useful things to know before you spin

The symbol that expands in a given free-spins round is chosen purely at random when that round starts, and there is no way to influence or predict it, so results can differ widely from one trigger to the next even at the same stake.

Because it is so straightforward, the game is a sensible pick for anyone wanting to learn the basics of slots — paylines, scatters and one clear bonus feature — before trying the more complex games elsewhere in this guide's catalogue.

Where it sits in Casoola's wider game library

Among the twelve games this guide covers, Book of Dead stands with Starburst as one of the more conventional and accessible choices, a handy contrast to the tumbling-cluster and very-high-volatility titles that make up a large part of the rest.

As one of Play'n GO's flagship games, with a simple layout and real win potential from its expanding-symbol free spins, it has stayed a regular in online casino lobbies for well over ten years since launch — staying power that few games in this genre can claim.

In the end, the fact that Book of Dead is still prominent in online casino lobbies more than a decade after release says something broader about slot design: a simple feature done well can stay both commercially successful and enjoyable long after more elaborate games have come and gone. You can see that across Play'n GO's catalogue, but nowhere more clearly than here. Players looking for a reliable, well-understood classic in Casoola's library keep coming back to games like this precisely because that simplicity never goes out of fashion.

If you are still getting to know online slots, starting with something like Book of Dead before moving on to the more intricate games elsewhere in this guide is a sensible, low-pressure way to get comfortable with how they work.

Its blend of easy-to-follow mechanics, a familiar adventure theme and genuine win potential through the expanding symbol has made it a steady recommendation in countless casino guides besides this one — agreement that reflects real, widely shared player enjoyment rather than marketing repeated over and over.

Outside Casoola, Book of Dead's lasting presence at a broad range of online casinos worldwide shows how firmly it has become a benchmark for its genre, often used by newcomers and reviewers alike as the yardstick for what a balanced, moderately volatile adventure slot should offer. That sort of long-lived reputation across many platforms is unusual in an industry where most games fade from view within a few years of release.

If you are undecided between Book of Dead and the catalogue's other easy-going options, its mix of theme, simplicity and real win potential makes it a reasonable default when you are not sure where to start.

More games

Frequently asked questions