Book of Dead

Provider

Play'n GO

Default RTP

96.21%

Volatility

High

Maximum win

5,000x

Core mechanic

Expanding symbol

What Book of Dead is

Book of Dead is a 2016 Play'n GO slot starring the explorer Rich Wilde, and it is one of the two or three most played online slots in the world. Five reels, three rows, ten adjustable paylines, a default return of 96.21%, high volatility and a maximum win of 5,000x your stake.

Mechanically it is a straight Book-style game: land three scatters, get ten free spins, and one randomly chosen symbol becomes a special expanding symbol for the round. That is the whole design, and it is why it has been the default free-spins game in casino welcome offers for the better part of a decade.

It is also the game where checking the return percentage matters more than on any other title we list, for reasons covered immediately below.

The RTP problem — read this first

Play'n GO supplies operators with five separate return configurations of the same game. Commonly reported tiers for Book of Dead are approximately:

Version	Return	House edge	Cost per $1,000 staked
Default	96.21%	3.79%	~$38
Reduced	~94.25%	5.75%	~$58
Reduced	~91.25%	8.75%	~$88
Reduced	~87.25%	12.75%	~$128
Lowest	~84.2%	15.8%	~$158

The artwork, symbols, features, ten paylines and 5,000x ceiling are identical across all five. Nothing on screen tells you which one you are playing except the number in the information screen.

That spread is the widest of any game on this site. At the bottom tier you are paying four times the house edge for the same game — turning a $1,000 turnover from a $38 expected cost into a $158 one. Industry analysis suggests Play'n GO's average deployed return across its catalogue sits below its default figures, meaning reduced builds are common rather than rare.

How to check which version you have

1. Open the game and tap the menu icon (three lines or a paytable symbol, usually bottom-left of the interface).
2. Navigate to the game information or rules pages — on Play'n GO titles this is typically the last page of the paytable.
3. Find the line stating the theoretical return to player. It will read a specific percentage.
4. If it is 96.21%, you have the default build. If it reads 94.25%, 91.25%, 87.25% or 84.18%, you are on a reduced version.

Do this at every new casino, and re-check occasionally at casinos you already use — operators can change configuration.

Grid, lines and base game

Five reels, three rows, ten paylines which are adjustable rather than fixed. Reducing the line count lowers your stake but also cuts your chances of landing the scatter combination that triggers the feature, so lowering the coin value is almost always the better way to bet smaller.

The base game is deliberately plain: standard left-to-right line wins, a wild that also acts as the scatter, and nothing accumulating. Tracked community data puts the hit rate around one win in every 3.8 spins, with most of those wins smaller than the stake. The base game exists to fund the free spins round.

Free spins and the expanding symbol

Landing three or more Book of Dead scatters anywhere awards ten free spins. At the start of the round, one symbol is selected at random to become the special expanding symbol.

During the round that symbol behaves differently from everything else: it pays in any position rather than only on a payline, and when enough copies land it expands to fill its entire reel. The round can be retriggered by landing three more scatters, awarding another ten spins with a fresh symbol selection.

Everything about the round's value is decided by that one random selection at the start.

Why the bonus is binary

This is the most important thing to understand about how the game feels.

If the selected symbol is Rich Wilde or the Pharaoh — the top-paying symbols — a good sequence can produce a large result, and this is where the 5,000x outcomes come from. If the selected symbol is a low-value card rank, the round is close to worthless no matter how well it runs, because expanding reels of tens and jacks pay almost nothing.

There is no consolation mechanic, no multiplier that builds, and no way to influence the selection. The round is a coin flip on symbol quality followed by ten spins of watching the result play out. Tracked data puts the bonus frequency at roughly one in 192 spins, so you will wait a long time to reach that coin flip.

That structure is why a Book of Dead session so often feels like nothing happened: you spent two hundred spins reaching a round that drew a card symbol and returned less than the spins cost.

Symbols and paytable

Symbol	Role	Notes
Rich Wilde	Top paying symbol	The selection you want in free spins
Pharaoh, Anubis, Horus	Premium symbols	Strong expanding-symbol candidates
Card ranks A, K, Q, J, 10	Low pays	A dead round if selected as the special symbol
Book of Dead	Wild and scatter	Three or more awards 10 free spins

Hit rate, bonus frequency and the 5,000x cap

Published and tracked figures for the default build:

• Hit rate — roughly one win in 3.8 spins (about 26%), most below stake.
• Bonus frequency — approximately one in 192 spins across millions of tracked spins.
• Maximum win — 5,000x, per Play'n GO's own figures.
• Average bonus return — tracked at around 81x total bet, which tells you the typical round is modest rather than transformative.

That last number is worth sitting with. A bonus averaging 81x, arriving once every 192 spins, is the engine of this game. The 5,000x cap is the far tail of that distribution.

Free spins offers on Book of Dead

This is the game most likely to be attached to a welcome offer, and the terms matter more than the spin count.

• Spin value. Free spins are issued at a fixed low stake. Fifty spins at ten cents is five dollars of play.
• Wagering requirement. Winnings usually need turning over several times before withdrawal.
• Maximum conversion cap. Frequently the binding constraint — if winnings cap at $50, the 5,000x ceiling is irrelevant to you.
• Which RTP version the offer runs on. Rarely disclosed, and worth checking in the game once your spins are credited.

Because the bonus is binary and rare, most free-spins batches on this game return very little. That is the expected outcome, not bad luck.

Stake sizing in practice

• Stakes run from around $0.10 to $100 per spin, built from coin value and bet level across ten lines. Read the total bet field.
• Budget for at least 200 spins given the roughly 1-in-192 bonus frequency. A $100 session means $0.50 spins.
• Keep all ten paylines active and reduce the coin value instead if you need a smaller stake.
• There is no feature buy on this title, so the only route to the bonus is waiting — which is protective, but it means a short session likely sees nothing.
• Check the RTP before your first spin. On this game that single action is worth more than any staking decision.

The Dead family and alternatives

• Legacy of Dead uses the same engine at a default 96.58% — a higher default return than Book of Dead for a near-identical game. If both are in your lobby at default settings, it is the better bet.
• Rich Wilde and the Tome of Madness and the wider Rich Wilde series move away from the Book skeleton into cluster and cascade mechanics.
• Cat Wilde titles are the same expanding-symbol design with different branding.
• Outside the family, Reactoonz offers an active base game rather than a binary bonus, if the waiting is what puts you off.

Who this suits

This suits a player who likes the simplicity of a ten-line slot with one clear bonus, has the bankroll for a couple of hundred spins, and has verified they are on the 96.21% build. On that build it is a perfectly reasonable high-variance game.

It suits nobody playing it blind. On an 84% configuration this is one of the worst bets available in a licensed casino, and the game gives you no visual clue that anything has changed. If you take one thing from this page, take the habit of opening the info screen.

FAQ

Common misconceptions

The first is that a long dry spell means the bonus is close. Scatter probability is identical on every spin. A four-hundred-spin drought on a game with a 1-in-192 average is unremarkable and carries no information about the next spin.

The second is that the expanding symbol can be influenced — by stake size, by spin speed, by playing at a particular time. It is a single random draw at the start of the round, weighted by the game's maths, and nothing you do touches it.

The third, and the expensive one, is assuming that because the game is famous it must be the same everywhere. It is not. Book of Dead is the clearest example in the industry of an identical-looking game with wildly different maths depending on the operator.

Where this fits in a session

On the default build, this is a reasonable high-variance game to play in short deliberate bursts on a pre-decided budget. What it is not is a game to grind: the bonus frequency and the binary bonus mean a long session on Book of Dead is mostly a long session of base-game spins.

If you have been given free spins on it, use them and take whatever comes without depositing to chase the round you did not get. And if the info screen shows anything below 96.21%, close the game — that is the single most profitable decision available on this title.