How the Grid and Paylines Work
This slot uses BGaming’s Megaways engine on a 6-reel, 7-row dynamic grid. The number of rows on each reel shifts with every spin, creating up to 117,649 win ways – a far cry from the fixed 6×3 layout of the original Book of Cats. Premium symbols (cat god Bastet in three forms, Cleopatra as the top tier) pay between 2x and 10x your stake for 6 of a kind. The grid feels more ‘grand’ than a static setup, even though the base game itself is sparse.
Book Symbol – Wild and Scatter Hybrid
The Book symbol lands only on reels 2 to 6 and pulls double duty. As a wild, it substitutes for pay symbols to complete wins. As a scatter, it pays 5x, 25x, or 100x your stake for 3, 4, or 5 in view respectively – and triggers the bonus round regardless of how many you land.
| Book Scatters | Payout | Bonus Trigger |
|---|---|---|
| 3 in view | 5x stake | Yes |
| 4 in view | 25x stake | Yes |
| 5 in view | 100x stake | Yes |
Free Spins with Multiplier Wilds
Trigger → 12 free spins awarded (always 12, regardless of scatter count). Rule → Book wilds land with a random multiplier of x2, x3, x5, or x10. When multiple wilds hit the same win, their multipliers are added together before the payout is boosted. Outcome → the multiplier stack is the ‘big twist’ that separates this bonus from standard expanding symbol rounds. Retrigger with 3+ scatters on any free spin to earn another 12 spins.
The special expanding symbol is chosen upfront and expands to cover the full reel when enough instances land to create a win. Unlike standard payline slots, the expanding symbols don’t need to be adjacent – they can land anywhere on a reel to trigger full payline wins.
Ante Bet and Bonus Buy
The Chance x2 feature can be toggled between base spins and costs 50% more per spin. It doubles your bonus round hit rate – a natural tool when the wait feels long, though it eats into your bankroll. Bonus Buy is available in select jurisdictions (not UK) and offers two paths to the feature.
| Feature | Cost | Effect |
|---|---|---|
| Regular Bonus Buy | 100x stake | Trigger 12 free spins with random expanding symbol |
| Premium Bonus Buy | 150x stake | Trigger 12 free spins with premium symbol guaranteed as expanding symbol |
RTP and Volatility
High volatility means long stretches of dead spins in the base game before the bonus round delivers the payouts. When Bonus Buy and Chance x2 are both active, the RTP drops to 96%, a minor adjustment for the convenience trade-off.
