18+ only. The +500% promotional headline was confirmed by the site owner on 5 October 2026. Availability depends on your location and eligibility. The bonus structure, maximum amount, qualifying deposits, wagering, eligible games, maximum bets, expiry and cashout limits must be checked in the operator's live terms; they have not been supplied here. No payout time or acceptance in your country is guaranteed. Offshore operator; not licensed to offer online casino services in Australia. Gambling involves financial risk. Checked: 2026-10-05. 18+. Gambling involves financial risk.
18+ only. The +500% promotional headline was confirmed by the site owner on 5 October 2026. Availability depends on your location and eligibility. The bonus structure, maximum amount, qualifying deposits, wagering, eligible games, maximum bets, expiry and cashout limits must be checked in the operator's live terms; they have not been supplied here. No payout time or acceptance in your country is guaranteed. Offshore operator; not licensed to offer online casino services in Australia. Gambling involves financial risk. Checked: 2026-10-05. 18+. Gambling involves financial risk.
Every page ranking for this game leads with 30,338x and stops there. The number is real and Nolimit City publishes it. What none of those pages print is the figure that sits next to it, the fact that the game ships with six different RTP settings, or that the payline selector on the first screen quietly changes all three.
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The 30,338x figure, and the number nobody prints next to it
Nolimit City publishes a maximum win of 30,338x the bet for Book of Shadows. The studio's own game page carries that number, the title tag on its Playin demo portal carries it, and OLBG, PokerListings and SlotCatalog repeat it. It is the arithmetic ceiling of the maths model, and most of the reason a 2020 release is still being searched for six years later.
What almost nobody prints beside it is the second number. GamesHub's review puts the odds of reaching that ceiling at 1 in 3,600,000 spins. Be precise about where that comes from: Nolimit City does not publish a max-win probability, and OLBG says in as many words that there is no max win probability information for this game. So 1 in 3.6 million is one review's estimate, not a certified figure.
It is also not implausible, and you can check it against the RTP without taking anyone's word for it. A prize of 30,338x arriving once in 3,600,000 spins contributes 30,338 divided by 3,600,000, which is 0.84 percentage points of return. On the top configuration, which returns 96.19%, that means a little under nine-tenths of one percent of everything the game pays back travels through the top prize. That is the right shape for a Nolimit City model, where the ceiling is deliberately thin and the working money sits in the mid-range features. The estimate survives the sanity check.
Which is the whole problem with the headline. The number is accurate; the impression it leaves is not.
Book of Shadows is in the lobby at both casinos below. Whichever you open, check the RTP in the game's own info panel before the first spin: this title ships in a 96% band and a 94% band, and the lobby tile does not tell you which one you have been given. Safe Casino is listed first.
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18+ only. The +500% promotional headline was confirmed by the site owner on 5 October 2026. Availability depends on your location and eligibility. The bonus structure, maximum amount, qualifying deposits, wagering, eligible games, maximum bets, expiry and cashout limits must be checked in the operator's live terms; they have not been supplied here. No payout time or acceptance in your country is guaranteed. Offshore operator; not licensed to offer online casino services in Australia. Gambling involves financial risk. Checked: 2026-10-05. 18+. Gambling involves financial risk.
18+ only. The +500% promotional headline was confirmed by the site owner on 5 October 2026. Availability depends on your location and eligibility. The bonus structure, maximum amount, qualifying deposits, wagering, eligible games, maximum bets, expiry and cashout limits must be checked in the operator's live terms; they have not been supplied here. No payout time or acceptance in your country is guaranteed. Offshore operator; not licensed to offer online casino services in Australia. Gambling involves financial risk. Checked: 2026-10-05. 18+. Gambling involves financial risk.
Nolimit City does not publish a free demo that can be embedded. The game itself is in the lobby at the operator below.
The spread is not an error and it is not a disagreement between reviewers. Book of Shadows has a different certified return for each payline setting you choose: 96.01% at 10 lines, 96.07% at 15, 96.19% at 20. Nolimit City also ships a lower band of the same game at 94.09%, 94.30% and 94.42%, and the operator decides which band it installs. SlotCatalog's header shows 94.09% while its own FAQ shows 96.01-96.19%, and both are describing real builds. The only figure that applies to your spins is the one in the game's info panel at the casino you open it in.
Shadow Rows: the payline choice that rebuilds the game
Most slots let you pick a stake. Book of Shadows lets you pick the shape of the grid. It runs on 5 reels with a selector offering 10, 15 or 20 paylines, and choosing more lines does not simply spread your bet wider: it unlocks Shadow Rows, physically adding rows to the grid.
Ten paylines gives you a 5x3 grid. Fifteen unlocks a fourth row. Twenty unlocks a fifth, for a full 5x5. The extra rows are not free: 4 rows costs 1.5x your base stake and 5 rows costs 2x. OLBG and SlotCatalog describe the ladder identically, which is unusual agreement for this game.
Here is the part that is genuinely rare, and the reason this selector is not just a bet multiplier. The row choice changes how many free spins the bonus awards, and it changes them in the opposite direction. Three rows awards 14 free spins. Four rows awards 12. Five rows awards 10. You are trading spin count for grid area, and the game is explicit about it.
So the selector is a real decision with two sides, and neither is a trick: both ends are certified configurations of the same game, and the gap in return across the whole ladder is 0.18 of a percentage point, which is small next to the gap in how the game feels. Pick on temperament rather than on the RTP table. If you want the free spins round to last, take 3 rows and the 14 spins. If you want the expanding symbol in the bonus to have five rows to cover, pay the 2x and take 10.
Six published RTP numbers, and why all of them are real
Search this game and you will be handed 96.19%, 96.01%, 94.09% and a few others, usually with no explanation. All of those are real settings of Book of Shadows. The reason the figures scatter is that this game has more certified configurations than most slots have features.
The three standard builds track the row choice: 96.01% at 3 rows, 96.07% at 4 rows, 96.19% at 5 rows. Nolimit City's own page leads with 96.01%, which is the base 3-row setting, while OLBG and PokerListings lead with 96.19%, which is the 5-row setting. Those two camps have been read as a contradiction by every aggregator that copies them. They are not contradicting. They are quoting different ends of the same selector.
Underneath sits a second band of the same three builds at 94.09%, 94.30% and 94.42%, which operators can install instead. That is a two-point swing in house edge on a game with identical artwork and an identical max win.
Buying the bonus changes the number again, upward: the buy configurations are certified at 96.20%, 96.29% and 96.43% in the high band.
None of this is hidden from you at the point it matters. Every licensed client puts the figure two taps away, under the i button and then the paytable, and it reads the build the operator actually installed. Do that before your first spin rather than after a bad session. If a lobby will not show you the number for a game that has six of them, open a lobby that will.
Shadow Rows cost
4 rows costs 1.5x your base stake, 5 rows costs 2x
Free spins awarded
14 spins at 3 rows, 12 at 4 rows, 10 at 5 rows
Bonus buy
60x, 90x or 120x stake for 10 spins at 3, 4 or 5 rows. Withheld in some regulated markets
Hit frequency
33.33% per Nolimit City. OLBG's data panel prints 33.18%, its body text 33.33%
How Book of Shadows is listed in the lobby — Nolimit City's own cover art. Search this tile rather than the name; lobbies sort by studio, not alphabetically.
Where the 10,000x figure comes from
A smaller group of sources gives the maximum win as 10,000x. Racing Post's Nolimit City round-up describes the reels expanding toward a 10,000x payout, and the horror site Morbidly Beautiful prints the same figure. Neither cites a source for it.
The weight of evidence is firmly on 30,338x: the studio publishes it, its demo portal puts it in the page title, and the three largest databases carry it. Trade coverage of the August 2020 launch described prizes worth up to 30,000 times the triggering stake, which is the same ceiling described loosely. The 10,000x looks like a round number that entered one round-up and got copied, which is exactly how 94.09% became a headline RTP on SlotCatalog.
There is a practical reason not to dismiss the smaller number entirely, though it is not the reason those pages think. Absolute payout caps exist in this game's own rules and in your operator's terms. Book of Shadows' gamble feature carries a documented ceiling: winnings taken through the red-black gamble cannot exceed 500,000 euro. Operators apply their own maximum payout clauses on top. At a large stake, 30,338x is a figure that can collide with a contractual cap long before it collides with the maths model, and the cap is in the terms, not on the game screen.
If you intend to play this above a small stake, the maximum payout clause in your casino's terms is a more relevant number than either 30,338x or 10,000x.
Bonus terms, game weighting and the RTP a casino runs are set by the operator and change without notice. Open the live terms before you deposit.
Probabilities this large stop meaning anything as fractions, so convert them, taking the single published estimate at face value. At the 20-line setting the stake band commonly starts around A$0.20 a spin. Three point six million spins at A$0.20 is A$720,000 staked, against a 30,338x prize worth about A$6,068 at that stake. At A$1 a spin it is A$3.6 million staked for a prize of A$30,338. Scale the stake and both sides scale together: the ratio never improves, because it is the maths model, not the bet size.
Now convert the spins to time. A fast player on auto-play manages somewhere around 600 spins an hour. Three point six million spins is 6,000 hours, or 250 days of continuous, unbroken spinning. Nobody has ever played Book of Shadows for 250 days without stopping, which is the honest answer to how close the ceiling is.
The numbers that describe your actual session are far smaller and far more useful, and they are published. The game hits on roughly one spin in three: Nolimit City lists 33.33% and OLBG's data panel 33.18%, the same claim within rounding. OLBG puts a win of 100x or better at about once every 843 spins and the bonus at once every 154; SlotCatalog independently estimates the bonus at one in 150.
One spin in three returns something, one in 154 opens the bonus, one in 843 pays three figures on a A$1 bet. That is the game you will actually sit in front of, and it is a good one. It is just not the game the 30,338x headline is selling.
What actually pays: the Golden symbol, Lucky Locks and the buy
Three or more book symbols trigger the free spins round, and the book doubles as a wild. On entry the game picks one symbol at random and makes it Golden: for the rest of the feature it expands to fill its whole reel whenever it can form a win. You get one redraw if you dislike the symbol you were handed, with the risk that the second pick is worse. Retriggers are unlimited.
This is where the Shadow Rows decision pays off or does not: an expanding Golden symbol covering a five-row reel reaches more paylines than the same symbol covering three, which is why the 5-row setting awards four fewer spins.
Lucky Locks is the base-game feature reviewers skip. You freeze up to four reels and respin the rest, at a price the game calculates from what you are holding. On a near-miss that is a targeted bet on one outcome rather than a fresh spin — and the fastest way to spend a balance here, because every lock is a new stake.
The Nolimit Bonus buy sits beside the spin button where it is permitted: 60x, 90x or 120x your stake for 10 free spins at 3, 4 or 5 rows, at a certified return a touch above base play. It still costs 60 to 120 bets for an event whose most common result is well under what you paid, so it concentrates a session rather than improving it. Australians usually see the buy; UK players do not, and some regulated markets strip out the Wheel of Bonus gamble with it.
Book of Shadows in play — a real spin of Nolimit City's free demo, balance and bet bar included. Nolimit City does not allow its demo to be embedded elsewhere, so the free game has to be opened inside a casino lobby.
Where Australians can open it, and who it suits
Nolimit City sits in the lobby at both operators on this page. Search by name rather than browsing by studio: a 2020 title is nobody's featured tile.
Nolimit City does not publish a demo that can be embedded on a third-party page, so there is no frame to load here and no free version hosted on this site. Most operators will open the game in demo mode without a deposit, and that is the right place to try the row selector, because the trade between grid size and free spin count is something you have to feel rather than read. Check the live lobby if the tile is not where you expect it.
On legality, be clear: there is no such thing as a licensed Australian online casino, because interactive gaming of this kind cannot be licensed here. Every operator serving Australian players is offshore, which changes what recourse you have. Read what that means before you deposit.
Who the game suits: a player who wants an extreme-volatility book slot with a genuine decision in it. Nolimit City rates this 10 out of 10 on its own volatility scale and OLBG classes it Extreme; GamesHub and SlotCatalog's header both say High, which understates it, and SlotCatalog's own review text calls it extreme two screens below its own header.
Who it does not suit: anyone who came for the 30,338x. Set a deposit limit in the account controls before you start, because on an extreme-volatility game the decision made while losing is the expensive one. Free, confidential help is on 1800 858 858.
Questions people actually ask
What is the real max win on Book of Shadows?
30,338x your bet. Nolimit City publishes that figure itself and the major databases carry it. The 10,000x you will see in a Racing Post round-up and one or two review sites is not supported by the studio. Separately, one review estimates the odds of reaching 30,338x at 1 in 3,600,000 spins, and Nolimit City publishes no max-win probability at all.
Why do sites give different RTPs for Book of Shadows?
Because the game has six certified settings. Choosing 10, 15 or 20 paylines gives 96.01%, 96.07% or 96.19%, and operators can instead install a lower band at 94.09%, 94.30% or 94.42%. Buying the bonus changes it again. Check the figure in the game's own info panel at your casino, under the i button, before you spin.
What do Shadow Rows do?
They add rows to the grid. Ten paylines is 5x3, fifteen adds a fourth row, twenty adds a fifth. Four rows costs 1.5x your base stake and five rows costs 2x. The trade is that more rows means fewer free spins: 14 spins at 3 rows, 12 at 4, 10 at 5.
Can I buy the bonus on Book of Shadows in Australia?
Usually yes. The Nolimit Bonus costs 60x, 90x or 120x your stake for 10 free spins at 3, 4 or 5 rows. It is removed for UK players and in some other regulated markets. A buy guarantees the round, not a return: 60 to 120 bets is a large single event, and the most likely outcome is less than you paid.
Where these numbers come from
Published figures for this game disagree between sites. These are the ones checked for this page, with the date they were read.
18+ only. Gambling involves financial risk and winning is never guaranteed. Online casino services are not licensed in Australia. Free, confidential support: 1800 858 858.
