Book of the Fallen

Book of the Fallen is Pragmatic Play's entry into the most crowded category in slots. It landed in November 2021 as part of the John Hunter series, and it borrows the format that Play'n GO made famous: five reels, ten fixed paylines, an Egyptian tomb, and one symbol that expands to fill a reel during free spins. What separates the good book slots from the forgettable ones is the maths underneath, and this is where Book of the Fallen has something worth looking at.

What You Are Actually Playing

The grid is 5x3 with ten paylines that cannot be reduced. Wins pay left to right from the leftmost reel. The Book acts as both wild and scatter, which is the defining trait of the format: the same symbol substitutes for everything and triggers the bonus, so a near-miss on a payline can still turn into ten free spins.

The symbol hierarchy runs John Hunter at the top, then the Pharaoh, Anubis and the Ankh. Below those sit the usual card ranks from ten up to ace. The premium symbols pay from two on a line rather than three, which matters more than it sounds. In a ten-line game with only five reels, two-symbol wins are what keep a balance ticking over between bonuses.

Why the Return Changes Depending on Where You Play

Pragmatic Play ships this game in several RTP configurations, and the casino chooses which one to run. The default build returns 96.50%. There are lower settings at 95.50% and 94.50% in circulation. Two full percentage points is a large gap on a game you might put a few hundred spins through, and nothing on the screen tells you which version you have loaded.

Two smaller adjustments happen inside the game itself. Turning on the ante bet moves the return to 96.49%, and buying the bonus moves it to 96.48%. Those differences are small enough to ignore. The difference between a 96.50% casino and a 94.50% casino is not.

The practical answer is to check the game information panel before you spin, since the RTP is stated there. If you would rather start from the games that pay back most, our high RTP slots list ranks everything we track by return.

Reading the Volatility Properly

Pragmatic Play rates this game 5 out of 5 for volatility, its highest band. The number that gives that rating meaning is the hit frequency: roughly one spin in 3.25 returns something. That sounds generous, and in the base game it is, but most of those hits are small two-symbol payments on the card ranks that return less than the spin cost.

The other end of the distribution is where the volatility shows. Maximum win is 5,000x your stake, and the probability of reaching it is around 1 in 2.1 million spins. That is not a target to plan around. It is the tail of a distribution that mostly resolves in the free spins round, and a realistic good session ends with a bonus paying somewhere in the tens or low hundreds of times your stake.

Book of the Fallen sits with the rest of our high volatility slots.

What a £20 Deposit Buys

Stakes start at 10p a spin and are adjusted through coin size and bet level rather than by switching paylines off. The ten lines are always in play, so the lowest real cost of entry is 10p, and the ceiling varies by casino.

At the minimum stake, £20 is 200 spins. At 96.50%, the expected return across those 200 spins is £19.30, so the theoretical cost of the session is 70p. That figure is the reason the RTP version matters: run the same 200 spins on the 94.50% build and the expected cost rises to £1.10, which is over half as much again for identical play.

Those are averages across a very large number of spins, not a forecast for your afternoon. High volatility means the actual result of 200 spins is almost never close to the average. Most sessions of that length finish below it, and a minority finish far above it, which is exactly what a 1 in 2.1 million top prize implies about the shape of the distribution.

The useful way to use these numbers is as a comparison tool between games rather than a prediction. Our slot betting strategy page runs the same calculation across every game in the database, so you can see where Book of the Fallen sits against alternatives at the same stake.

Playing on Mobile

The game is built in HTML5 and runs in a browser with no download. Ten paylines on a 5x3 grid is a light layout for a phone screen, so the symbols stay legible in portrait and the paytable remains readable without zooming. The expanding symbol animation is the only busy moment, and it holds up on older handsets.

Picking Your Expanding Symbol

Three or more Books anywhere on the reels award ten free spins. Before the round starts you choose which symbol becomes the expanding one, and that choice sets the shape of the bonus.

Choose John Hunter or another premium and you are betting on a small number of large hits. The symbol pays more when it expands, but it lands less often, so a ten-spin round can end with almost nothing. Choose a card rank and the symbol appears far more frequently, filling reels regularly, but each expansion pays a fraction as much. Neither is the correct answer. The premium raises variance, the card rank lowers it, and the long-run return is broadly the same either way.

The expanding symbol covers its whole reel when it lands and pays across all positions regardless of whether the win runs on adjacent reels. Three or more Books during the round retrigger it for another ten spins, and there is no cap on retriggers. Retriggering is where the outsized results come from, since the expanding symbol you picked stays locked for the whole extended run.

The Super Spin Ante Bet

The ante bet, badged as Super Spin, multiplies your total stake by ten. In exchange, expanding symbols become active in the base game rather than only in free spins.

Read that cost carefully, because it is unusual. Most ante bets add 20% or 25% to the stake. This one takes a £1 spin to £10. Wins are calculated from the base stake, not the raised one, so the feature has to justify a tenfold increase in what you are risking per spin. The RTP barely moves, at 96.49% against 96.50%, which means the option is close to return-neutral and simply converts the game into a much higher-stakes proposition. Most players are better served leaving it off.

Buying the Bonus

The bonus buy costs 100x your stake and drops you straight into ten free spins with your chosen expanding symbol. RTP moves to 96.48%.

At 100x, the buy is priced at roughly what the feature returns on average, which is how these are normally set. It removes the base game from the equation entirely. That is worth understanding rather than treating as a shortcut: you are paying a hundred spins' worth of stake for one bonus round, and a weak round is common in a game rated 5 out of 5 for volatility. Bonus buys are restricted or unavailable at UK-licensed casinos, so whether you see the option depends on where you are playing.

How It Sits Against the Rest of the Format

The obvious comparison is Book of Dead, which set the template. Book of Dead returns 96.21% with a 5,000x cap, so the two are close on paper. Book of the Fallen edges it on default RTP and on the frequency of small base-game hits, which makes it the slightly less punishing of the two over a short session.

Where it loses is character. Book of Dead has a decade of familiarity behind it and appears in far more free spins promotions. Book of the Fallen is a well-built version of a format that already had a definitive version, and it does not do anything the original does not.

Within Pragmatic Play's own catalogue it is one of the more restrained releases. If you came for the studio's louder games, Gates of Olympus and Sugar Rush are built around multiplier cascades rather than a single expanding symbol, and Big Bass Bonanza runs a collection mechanic instead. All of them are listed on our Pragmatic Play page.

Who Should Play It

Book of the Fallen suits players who already like the book format and want the highest default return available in it. The 96.50% build is a genuine advantage over most of the category, the hit frequency keeps the base game from feeling dead, and the expanding symbol choice gives you a lever over your own variance that few slots offer.

It suits you less if you want mechanical novelty. There are no cascades, no multiplier meters and no second bonus. It is one feature, executed cleanly. And the ante bet at 10x the stake is priced for a player far more comfortable with risk than most, so treat it as a curiosity rather than a default setting.

Before you play anywhere, check the RTP stated in the game panel. On a title shipped in three configurations, that one check is worth more than any strategy applied to the reels.

Where to Play Book of the Fallen

These online casinos carry Pragmatic Play games including Book of the Fallen. Read our Donbet review or browse all casino reviews.

Book of the Fallen RTP and Variance

Book of the Fallen has an RTP of 96.50%, which is above average. See our highest RTP slots for the best returning games. High volatility means wins come less often but tend to be significantly larger. Explore our high volatility slots guide.

More Pragmatic Play Slots

If you enjoy Book of the Fallen, try these other Pragmatic Play games available at the same casinos.