Cats in the burial chamber: theme and atmosphere
Ancient Egypt is one of the most heavily used backdrops in slots, but BGaming seated cats in place of the pharaohs. Kohl-eyed felines look back at you from the reels, with sandstone columns and torchlight behind them. The style is playful rather than sombre, and that makes a longer session less tiring.
The symbol set splits into two layers. Card signs pay the least, while the cat portraits, the scarab and the golden statue are responsible for the bigger combinations. The book deserves separate attention, because it acts as scatter and substitute at the same time.
The music is built on a quiet drum rhythm and only swells briefly during a win. It can be muted in the settings, with no effect on gameplay.
How to play: setting your stake step by step
The screen shows five reels and three rows with ten fixed paylines. The number of lines cannot be changed, so the only thing to set before you start is the stake level.
Begin with the paytable, which opens from the bottom menu bar. Note which three symbols pay best, because in free spins it is exactly those expanding across the reels that produce the bigger rounds.
Always measure the stake against your whole budget rather than a single spin. If you are planning a session of a hundred spins, divide the amount accordingly and then stick to it. Alongside our overview of slot categories, the demo version is a good entry point too, because it lets you learn the rhythm without staking anything.
Autoplay is convenient but not compulsory. If you use it, set a loss limit as well, so a session cannot quietly run through your budget.
Mechanics: expanding symbol, free spins, gamble
The essence of the book mechanic is that a single symbol does two jobs. As a substitute the book completes incomplete lines, and as a scatter it can start the bonus round from any position on the reels. Three books are already enough to trigger the bonus.
Before the free spins the game draws a special symbol. During the round that symbol expands across the full reel and pays even when it does not land on adjacent reels. This is why you want the draw to produce a high-value cat, because an expanding low card sign results in a far more modest final total.
The bonus round can be retriggered if enough books land again during the spins. On high-volatility slots this is the typical rare but spectacular event, not the default case.
The gamble feature can be offered after any win. You pick the colour of a card, and a correct call doubles the win, while a wrong one loses it completely. No guessing pattern improves the odds, so this is better treated as entertainment than as strategy.
As with BGaming's other titles, the random number generation runs on a provably fair basis. We have written about the characteristics of the BGaming portfolio in more detail on a separate page.
Volatility and RTP based on the provider's data
According to the provider, the theoretical return of the game is 96.13%. This is a long-run average spread across many millions of spins, not the expected result of an evening's play. A single session can deviate strongly from that value in either direction.
High volatility means wins arrive less often but with a wider spread. The base game often delivers only small combinations, and the larger amounts come almost exclusively from rounds with the expanding symbol. Your budget can therefore shrink faster between two bonus rounds than on a medium-volatility slot.
| Slot | Provider | RTP | Volatility | Mechanics | Source | Verification date |
|---|---|---|---|---|---|---|
| Book of Cats | BGaming | 96.13% | high | book mechanic (expanding symbol), free spins, gamble | BGaming | 2026-09-16 |
We checked the data on the date above against the provider's public description. Studios sometimes offer operators several RTP settings, so always look at the value shown in the help screen before you play. If a different number appears there, that is the one that applies in that casino.
No RTP value promises a payout, and nothing can be read from it about the outcome of the next spin. Results are independent of one another, and earlier outcomes do not influence the next.
Who the game suits and who it does not
It suits players who can handle the swings and are not bothered when almost nothing happens for ten or twenty spins. The book mechanic is exciting precisely because a single round can rewrite the shape of a session, but that round comes rarely.
It is less recommended for players looking for a steady trickle of small returns at low stakes. For them, medium-volatility titles give a more predictable rhythm, such as fruit machines or hold and win games.
If you do want to try it, the simplest form of self-defence is a small stake level and a time frame decided out loud in advance. Our page on setting player limits works through the daily and weekly caps worth switching on before you start.
Where to play it: Dukat.bet and the Slots Bonus
Book of Cats sits among the BGaming titles in the casino section at Dukat.bet, and the fastest route to it is the search box or the provider filter. The game can also be launched in demo mode, so you can watch the bonus round work without staking anything.
As a new player, the Slots Bonus 500% up to 3,000 EUR + 15% Cashback applies to a deposit made for slots. Always read the bonus terms, the wagering requirement and the maximum stake cap, because those determine how usable the balance is on a high-volatility game.
On mobile the game runs straight from the browser without a separate app, in both portrait and landscape orientation. Our round-up of slots optimised for mobile covers the differences in the interface in detail.